Ion source and mass spectrometry apparatus

Abstract

The application provides an ion source and a mass spectrometry device, and relates to the technical field of mass spectrometers. The ion source comprises a main body and an ionization mechanism. The main body comprises a first main body part and a second main body part. The first main body part is detachably connected with the second main body part. The outer side of the first main body part and the outer side of the second main body part are both provided with heat dissipation grooves. The first main body part is provided with a first cavity, and the second main body part is provided with a second cavity. The first cavity and the second cavity are in communication. The ionization mechanism is in communication with the first cavity. The ionization mechanism is used for forming gaseous phase ions of a solution introduced into the ionization mechanism in the first cavity. The application can effectively improve the heat dissipation efficiency of the surface of the ion source, and further improve the analysis accuracy and operation reliability of the mass spectrometry device.

Description

Technical Field

[0001] This application relates to the field of mass spectrometry technology, and in particular to an ion source and mass spectrometry device. Background Technology

[0002] A mass spectrometer is an instrument used to separate and detect different isotopes. The ion source, as the core of the mass spectrometer, can ionize organic solutions to form gaseous ions and output the gaseous ions to the mass analyzer, enabling the mass analyzer to analyze and detect the gaseous ions.

[0003] Taking electrospray ionization sources as an example, after an organic solution is introduced into the electrospray ionization source, it can be ionized under the action of high voltage or high voltage electric field to form an ionic liquid. After being atomized by high pressure, the ionic liquid can evaporate the solvent in high temperature gas to form gaseous ions. However, during the operation of the ion source, the Joule heat generated by the high voltage and the continuous input of high temperature atomized gas will cause the internal heat to accumulate rapidly. Moreover, the heat is difficult to remove efficiently in the existing structure, and the heat dissipation efficiency is not high. This makes the internal temperature of the ion source prone to continuous rise, which may not only affect the stability of the ionization process, but also cause the core components (such as electrodes and heating elements) to degrade due to long-term high temperature, thereby reducing the analytical accuracy and operational reliability of the mass spectrometry equipment.

[0004] Therefore, improving the heat dissipation efficiency of ion sources has become an urgent problem to be solved. Utility Model Content

[0005] The main objective of this application is to provide an ion source and a mass spectrometry device that can effectively improve the heat dissipation efficiency of the ion source surface, thereby improving the analytical accuracy and operational reliability of the mass spectrometry device.

[0006] In a first aspect, this application provides an ion source for use in a mass spectrometry device, comprising: a main body and an ionization mechanism. The main body includes a first main body portion and a second main body portion, which are detachably connected. Heat dissipation grooves are provided on the outer side of both the first main body portion and the outer side of the second main body portion. The first main body portion has a first cavity, and the second main body portion has a second cavity. The first cavity and the second cavity are in communication. The ionization mechanism is connected to the first cavity, and the ionization mechanism is used to form gaseous ions in the first cavity by introducing a solution into the ionization mechanism.

[0007] In one embodiment of this application, the ionization mechanism includes:

[0008] A heating rod, which is connected to the first cavity, is used to heat the solution introduced into the ionization mechanism to form gaseous molecules;

[0009] A discharge element is connected to the first cavity, and the discharge element is used to ionize the gaseous molecules formed after the heating rod is heated to form gaseous ions.

[0010] In one embodiment of this application, the diameter of the heating rod is 18-25 mm.

[0011] In one embodiment of this application, both the first main body portion and the second main body portion are cuboid in shape, and in the thickness direction of the main body portion, the projection of the first main body portion onto the second main body portion covers the second main body portion.

[0012] In one embodiment of this application, a support column is further included, one end of which is connected to the bottom of the second main body, and the other end of which is flush with the bottom of the first main body.

[0013] In one embodiment of this application, a position adjustment device is further included, which is connected to the discharge element and is used to adjust the position of the discharge element.

[0014] In one embodiment of this application, a viewing plate is provided on the side of the second main body away from the first main body, and the viewing plate covers the opening of the second cavity on the side away from the first cavity.

[0015] In one embodiment of this application, a conductive element is further included. The conductive element is disposed in the second cavity and is used to apply an electric field to cause gaseous ions located inside the first cavity and the second cavity to be transported to the outside of the first cavity under the action of the electric field.

[0016] In one embodiment of this application, an exhaust gas transmission component is also included, which is connected to the first cavity.

[0017] Secondly, this application provides a mass spectrometry device, the mass spectrometry device including an ion transport structure and an ion source as described in any of the first aspects, an outlet is provided on the side of the first cavity of the ion source away from the second cavity, and the ion transport structure is connected to the outlet of the first cavity.

[0018] This application provides an ion source and mass spectrometry device. When the ionization mechanism is working, the Joule heat generated by the high voltage and the continuous input of high-temperature atomized gas cause rapid heat accumulation in the first cavity located in the first main body and the second cavity located in the second main body. By setting heat dissipation grooves on the outside of the first main body and the outside of the second main body, heat can be transferred from the cavity walls of the first and second cavities to the area connected to the heat dissipation grooves. Furthermore, heat is transferred from the heat dissipation grooves to the external environment, effectively improving the heat dissipation efficiency of the ion source surface, thereby improving the analytical accuracy and operational reliability of the mass spectrometry device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an ion source in a first direction provided in an embodiment of this application;

[0021] Figure 2 A schematic diagram showing the split structure of a first main body and a second main body in an ion source provided in this application embodiment;

[0022] Figure 3 This is a schematic diagram of the structure of an ion source in a second direction provided in an embodiment of this application;

[0023] Figure 4 This is a partial structural diagram of the first main body of an ion source provided in an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of a third-direction structure of an ion source provided in an embodiment of this application. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0027] It should be understood that, in order to clearly describe the technical solutions of the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. For example, the first callback function and the second callback function are only used to distinguish different callback functions and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" do not necessarily mean they must be different.

[0028] It should also be understood that the term "and / or" as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0029] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] In existing technologies, during the operation of ion sources, the Joule heat generated by high voltage electricity and the continuous input of high-temperature atomized gas lead to rapid accumulation of internal heat. Moreover, the heat is difficult to dissipate efficiently in existing structures, resulting in low heat dissipation efficiency. This makes it easy for the internal temperature of the ion source to rise continuously, which may not only affect the stability of the ionization process, but may also cause the core components (such as electrodes and heating elements) to experience performance degradation due to long-term high temperatures, thereby reducing the analytical accuracy and operational reliability of mass spectrometry equipment.

[0031] In view of this, in order to solve the above problems, this application provides an ion source and a mass spectrometry device, which can effectively improve the heat dissipation efficiency of the ion source surface, thereby improving the analytical accuracy and operational reliability of the mass spectrometry device.

[0032] Firstly, referring to Figure 1 This application provides an ion source for use in a mass spectrometry device, comprising: a main body 1 and an ionization mechanism 2. The main body 1 includes a first main body portion 11 and a second main body portion 12, which are detachably connected, such as... Figure 2As shown, heat dissipation grooves 3 are provided on the outer side of the first main body 11 and the outer side of the second main body 12. The first main body 11 is provided with a first cavity 111 and the second main body 12 is provided with a second cavity 121. The first cavity 111 and the second cavity 121 are connected. The ionization mechanism 2 is connected to the first cavity 111. The ionization mechanism 2 is used to form gaseous ions in the first cavity 111 by introducing the solution into the ionization mechanism 2.

[0033] It should be noted that the ionization mechanism 2 needs to operate within a closed cavity. Both the first main body 11 and the second main body 12 are provided with chambers that communicate with the heat dissipation groove 3. During the heat dissipation process, firstly, the heat accumulated in the first cavity 111 of the first main body 11 and the second cavity 121 of the second main body 12 is transferred from the cavity walls of the first cavity 111 and the second cavity 121 to the chambers that communicate with the heat dissipation groove 3. Secondly, the heat is transferred from the chambers that communicate with the heat dissipation groove 3 out of the heat dissipation groove 3 and exchanged with the external environment, thereby achieving rapid heat dissipation.

[0034] For example, the ionization mechanism 2 can use electrospray ionization or atmospheric pressure chemical ionization to form gaseous ions in the first cavity 111 of the solution introduced into the ionization mechanism 2.

[0035] For example, a plurality of evenly distributed heat dissipation grooves 3 are provided on both sides of the first main body 11 to accelerate the transfer of heat from the first cavity 111 to the external environment.

[0036] For example, the left, right, top and bottom surfaces of the second main body 12 are provided with a plurality of uniformly distributed heat dissipation grooves 3 to accelerate the transfer of heat from the second cavity 121 to the external environment. These heat dissipation grooves 3 are smoothly transitioned at the junctions of the top and left, left and bottom, top and right, and right and bottom, forming a continuous shape around the second main body 12.

[0037] For example, the first main body 11 and the second main body 12 can be detachably connected by a connector. The connector can be a screw assembly, such as a bolt, screw, nut, stud, etc., which achieves a fastening connection through thread engagement. When disassembly is required, it can be loosened by simply rotating. Alternatively, the connector can be a snap-fit ​​assembly. For example, a snap-fit ​​is provided on the first main body 11 and a pawl is provided on the second main body 12. The fastening connection is achieved through the mechanical engagement between the snap-fit ​​and the pawl. When disassembly is required, it can be separated by simply applying a force in the opposite direction.

[0038] Understandably, since the first main body 11 and the second main body 12 are detachably connected, on the one hand, it is convenient to clean the first main body 11 and the second main body 12 regularly; on the other hand, when a component is damaged or malfunctions, the main body containing the damaged component can be disassembled and replaced separately without scrapping the whole, reducing maintenance costs and extending the overall service life of the equipment; furthermore, the first main body 11 and the second main body 12 can be separated for storage or transportation, reducing the overall volume and space occupied, reducing transportation costs, and also facilitating handling or storage in narrow spaces.

[0039] In some embodiments, refer to Figure 3 The ionization mechanism 2 includes a heating rod 21 and a discharge element 22. The heating rod 21 is connected to the first cavity 111 and is used to heat the solution introduced into the ionization mechanism 2 to form gaseous molecules. The discharge element 22 is connected to the first cavity 111 and is used to ionize the gaseous molecules formed after the heating rod 21 is heated to form gaseous ions.

[0040] It should be noted that, referring to Figure 4 A first groove 112 and a second groove 113 are provided in the first main body 11. The first groove 112 is used to hold the discharge component 22, and the second groove 113 is used to hold the heating rod 21.

[0041] It should be noted that the size of the first tank 112 is adapted to the size of the discharge element 22, and the size of the second tank 113 is adapted to the size of the heating rod 21. The size of the first tank 112 can be adjusted according to the size of different discharge elements 22, and the size of the second tank 113 can be adjusted according to the size of different heating rods 21, so that both the discharge element 22 and the heating rod 21 can be stably connected to the first cavity 111, thereby improving the working stability of the ion source.

[0042] For example, there are two heating rods 21, and the discharge element 22 is disposed between the two heating rods 21, with the pipe openings of both heating rods 21 facing the direction of the discharge needle in the discharge element 22. Figure 3 As shown, in order to ensure that the gaseous molecules coming out of the pipe opening of the heating rod 21 can be ionized into gaseous ions by the discharge element 22 in a timely manner, thereby improving the ionization efficiency, the number of heating rods 21 is not limited in this application.

[0043] In some embodiments, refer to Figure 3 It also includes a position adjustment device 4, which is connected to the discharge element 22 and is used to adjust the position of the discharge element 22.

[0044] It should be noted that, referring to Figure 1The first main body 11 is also provided with a handle 114. The top of the handle 114 is provided with a first hollow area. One end of the discharge element 22 passes through the first hollow area, and the other end of the discharge element 22 is connected to the first cavity 111. The side of the handle 114 is provided with a second hollow area. One end of the position adjustment device 4 is connected to the discharge element 22, and the other end of the position adjustment device 4 passes through the second hollow area.

[0045] Understandably, by setting up a handle 114 and opening a first hollow area at the top of the handle 114, the discharge element 22 can be more stably connected to the first cavity 111, avoiding the discharge element 22 from tilting under the action of external force. In addition, a second hollow area is opened on the side of the handle 114, which restricts the position adjustment device 4 from moving up and down within the range of the second hollow area. This allows the user to more intuitively understand the maximum range of movement of the position adjustment device 4, avoids damaging the position adjustment device 4 by using excessive force, and thus better control the force of the position adjustment device 4, thereby better driving the up and down movement of the discharge element 22 and realizing the position adjustment of the discharge element 22.

[0046] In some embodiments, the diameter of the heating rod 21 is 18-25 mm.

[0047] It should be noted that in existing ion sources, especially electrospray ion sources such as electron impact sources, the sample solution is formed into charged droplets through a high-pressure capillary (3-5kV). As the solvent evaporates under continuous heating by the heating rod, the droplets shrink, the charge density increases until a coulombic explosion occurs, and multiply charged ions are generated. However, the heating rod in existing ion sources has a pipe diameter of 12mm, which results in a slow heating rate during operation, which greatly affects the analysis speed and process efficiency.

[0048] Understandably, this application widens the pipe diameter of the heating rod 21 to the range of 18-25mm. Compared with the existing heating rod 21 with a pipe diameter of 12mm, the pipe diameter of the heating rod 21 is increased, thereby increasing the heating area of ​​the heating rod 21, improving heating efficiency and ionization stability.

[0049] Understandably, increasing the pipe diameter of the heating rod 21 not only improves heating efficiency but also enhances ionization stability. However, the rate of heat accumulation in the first cavity 111 of the first main body 11 and the second cavity 121 of the second main body 12 also accelerates. Furthermore, by providing heat dissipation grooves 3 on the outer side of the first main body 11 and the outer side of the second main body 12, heat can be transferred from the cavity walls of the first cavity 111 and the second cavity 121 to the area connected to the heat dissipation grooves 3 in a timely manner. This further transfers heat from the heat dissipation grooves 3 to the external environment, effectively improving the heat dissipation efficiency of the ion source surface, thereby improving the analytical accuracy and operational reliability of the mass spectrometry equipment.

[0050] In some embodiments, refer to Figure 1-5 Both the first main body 11 and the second main body 12 are cuboid in shape. In the thickness direction of the main body 1, the projection of the first main body 11 onto the second main body 12 covers the second main body 12.

[0051] It should be noted that both the first main body 11 and the second main body 12 are cuboid in shape, with simpler and smoother lines. Furthermore, in the thickness direction of the main body 1, the projection of the first main body 11 onto the second main body 12 covers the second main body 12. The length and width of the first main body 11 are not less than those of the second main body 12, thus avoiding the visual disjointedness caused by size misalignment. The overall lines naturally transition from the first main body 11 to the second main body, reducing abrupt edges and presenting a more harmonious and unified visual effect.

[0052] In some embodiments, refer to Figure 5 It also includes support columns 122, one end of which is connected to the bottom of the second main body 12, and the other end of which is flush with the bottom of the first main body 11.

[0053] For example, there are two support columns 122, which are evenly distributed at the bottom of the second main body 12. In this application, the number of support columns 122 is not limited.

[0054] It should be noted that by setting a support column 122 at the bottom of the second main body 12, it is not necessary to extend the bottom of the second main body 12 to be flush with the bottom of the first main body 11. On the one hand, this helps to further reduce the volume of the second main body 12, reduce the overall weight of the ion source, and enhance the placement stability of the ion source. On the other hand, a heat dissipation groove 3 is provided at the bottom of the second main body 12. By setting a support column 122 at the bottom of the second main body 12, it is also possible to avoid blocking the heat dissipation groove 3 and improve the heat dissipation effect.

[0055] In some embodiments, refer to Figure 5A viewing plate 123 is provided on the side of the second main body 12 away from the first main body 11, and the viewing plate 123 covers the opening of the second cavity 121 on the side away from the first cavity 111.

[0056] For example, the transparent panel 123 may be made of transparent plastic or transparent glass material. In this application, the material of the transparent panel 123 is not limited in too much.

[0057] It is understandable that by providing a viewing plate 123 on the side of the second main body 12 away from the first main body 11, it is beneficial for the user to observe the reaction inside the first cavity 111 and the second cavity 121 through the viewing plate 123.

[0058] For example, a slot is provided at the opening of the second cavity 121 on the side away from the first cavity 111, and the viewing plate 123 can be fixed in the slot.

[0059] In some embodiments, a conductive element is also included. The conductive element is disposed in the second cavity 121 and is used to apply an electric field so that gaseous ions located inside the first cavity 111 and the second cavity 121 are transported to the outside of the first cavity 111 under the action of the electric field.

[0060] Understandably, the ionization mechanism 2 can convert the introduced solution into gaseous ions in the first cavity 111. When the conductive element is connected to a voltage, an electric field can be applied to the first cavity 111, so that the gaseous ions in the first cavity 111 can be transported to the outside of the first cavity 111 under the pushing force of the electric field. This allows the ion source to output more gaseous ions, which in turn allows more gaseous ions to be transported to the mass analyzer connected to the ion source, thereby improving the ion collision rate and thus enhancing the sensitivity of the mass spectrometry equipment.

[0061] For example, the conductive element is a circular structure, and the size of the conductive element is approximately the size of the opening of the second cavity 121.

[0062] For example, an insulating layer is provided on the outer periphery of the main body 1 to reduce the impact of the conductive parts being connected to the power source on the external environment.

[0063] In some embodiments, the conductive element is electrically connected to the ionization mechanism 2.

[0064] It is understandable that when the ionization mechanism 2 is energized, the solution introduced into the ionization mechanism 2 can be ionized. By directly connecting the conductive component to the ionization mechanism 2, the electrical connection structure of the ion source can be simplified.

[0065] Furthermore, the conductive element is electrically connected to the discharge element 22.

[0066] Understandably, the discharge element 22 is connected to a high voltage to ionize the atomized solution, and the conductive element can be electrically connected to the discharge element 22 so that the conductive element is connected to a high voltage and thus can apply an electric field to the first cavity 111.

[0067] In some embodiments, refer to Figure 3 It also includes an exhaust gas transmission component 5, which is connected to the first cavity 111.

[0068] Understandably, the exhaust gas transmission component 5 can remove unionized solvent droplets from the first chamber 111 and the second chamber 121, preventing them from entering the mass analyzer, which is further connected to the ion source, and forming ion clusters that interfere with the process.

[0069] Secondly, this application provides a mass spectrometry device, which includes an ion transmission structure and an ion source as described in any of the first aspects. An outlet is provided on the side of the first cavity 111 of the ion source away from the second cavity 121, and the ion transmission structure is connected to the outlet of the first cavity 111.

[0070] In some embodiments, the ion transport structure forms an ion transport channel, one end of which is connected to the outlet of the first cavity 111 and the other end is connected to a mass analyzer. Gas phase ions inside the first cavity 111 and the second cavity 121 enter the ion transport channel through the outlet of the first cavity 111 and are transported to the mass analyzer under the action of the ion transport structure.

[0071] For example, the ion transport structure can employ four, six, or eight electrode rods, with multiple electrode rods distributed circumferentially at intervals. The central region between the multiple electrode rods forms an ion transport channel. By using multiple electrode rods as positive and negative electrodes, an electric field is formed in the ion transport channel, thereby transmitting gaseous ions transported from the outlet of the first cavity 111 to the mass analyzer under the influence of the electric field within the ion transport channel.

[0072] The ion source and mass spectrometry device provided in this application, when the ionization mechanism 2 is working, the Joule heat generated by the high voltage and the continuous input of the high temperature atomized gas will cause the heat to accumulate rapidly in the first cavity 111 located in the first main body 11 and the second cavity 121 located in the second main body 12. By setting heat dissipation grooves 3 on the outside of the first main body 11 and the outside of the second main body 12, the heat can be transferred from the cavity walls of the first cavity 111 and the second cavity 121 to the area connected with the heat dissipation grooves 3. Furthermore, the heat is transferred from the heat dissipation grooves 3 to the external environment, which effectively improves the heat dissipation efficiency of the ion source surface, thereby improving the analytical accuracy and operational reliability of the mass spectrometry device.

[0073] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0074] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0075] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. An ion source for use in mass spectrometry equipment, characterized in that, include: The main body includes a first main body portion and a second main body portion, which are detachably connected. Heat dissipation grooves are provided on the outer side of both the first main body portion and the outer side of the second main body portion. The first main body portion is provided with a first cavity, and the second main body portion is provided with a second cavity. The first cavity and the second cavity are in communication. An ionization mechanism is connected to the first cavity, and the ionization mechanism is used to form gaseous ions in the first cavity by introducing the solution into the ionization mechanism.

2. The ion source according to claim 1, characterized in that, The ionization mechanism includes: A heating rod, which is connected to the first cavity, is used to heat the solution introduced into the ionization mechanism to form gaseous molecules; A discharge element is connected to the first cavity, and the discharge element is used to ionize the gaseous molecules formed after the heating rod is heated to form gaseous ions.

3. The ion source according to claim 2, characterized in that, The diameter of the heating rod's pipe is 18-25mm.

4. The ion source according to claim 1, characterized in that, Both the first main body and the second main body are cuboid in shape, and in the thickness direction of the main body, the projection of the first main body onto the second main body covers the second main body.

5. The ion source according to claim 1, characterized in that, It also includes support columns, one end of which is connected to the bottom of the second main body, and the other end of which is flush with the bottom of the first main body.

6. The ion source according to claim 2, characterized in that, It also includes a position adjustment device, which is connected to the discharge element and is used to adjust the position of the discharge element.

7. The ion source according to claim 1, characterized in that, A viewing plate is provided on the side of the second main body away from the first main body, and the viewing plate covers the opening of the second cavity on the side away from the first cavity.

8. The ion source according to claim 1, characterized in that, It also includes a conductive element disposed in the second cavity. The conductive element is used to apply an electric field so that gaseous ions located inside the first cavity and the second cavity are transported to the outside of the first cavity under the action of the electric field.

9. The ion source according to claim 1, characterized in that, It also includes an exhaust gas transmission component, which is connected to the first cavity.

10. A mass spectrometry device, characterized in that, The mass spectrometer includes an ion transport structure and an ion source as described in any one of claims 1-9, wherein an outlet is provided on the side of the first cavity of the ion source away from the second cavity, and the ion transport structure is connected to the outlet of the first cavity.

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