Receiving pocket, receiver and isotope electromagnetic separator

Abstract

The invention relates to the technical field of electromagnetic separation, and provides a receiving pocket, a receiver and an isotope electromagnetic separator. The receiving pocket comprises a pocket body, a supporting assembly and an electrode plate, a receiving opening communicated with the inner space of the pocket body is formed in the pocket body, a penetrating opening is formed in the electrode plate, the electrode plate is used for being connected with an external power source, and the supporting assembly is connected between the pocket body and the electrode plate so that the penetrating opening can be aligned with the receiving opening. According to the receiving pocket, the receiver and the isotope electromagnetic separator provided by the invention, the ion beam current can be collected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic separation, in particular to a receiving pocket, a receiver and an isotope electromagnetic separator. BACKGROUND

[0002] With the rapid development of quantum technology and nuclear medicine related technology and industry, stable isotopes as the element raw material and precursor material in the above two industries are in increasing demand. At present, in addition to a few specific isotopes that can be produced by centrifugal method, diffusion method, laser method and other methods, most of the isotopes still need to be separated by electromagnetic method.

[0003] The receiver is an important part of the isotope electromagnetic separator, and the receiving pocket thereon is used to receive the ion beam flow after separation. However, the ion beam flow is in a divergent state before entering the receiving pocket, and it is difficult to analyze and experiment on it. Therefore, there is an urgent need for a device that can converge the ion beam flow before it enters the receiving pocket. SUMMARY

[0004] Therefore, the embodiments of the present application aim to provide a receiving pocket, a receiver and an isotope electromagnetic separator, which can converge the ion beam flow.

[0005] To achieve the above-mentioned purpose, the technical solutions of the embodiments of the present application are as follows: The embodiments of the present application disclose a receiving pocket for an isotope electromagnetic separator, which comprises a pocket body, a support assembly and an electrode sheet. The pocket body is formed with a receiving port communicating with the internal space thereof. The electrode sheet is formed with a through port. The electrode sheet is used to be connected with an external power supply. The support assembly is connected between the pocket body and the electrode sheet, so that the through port is aligned with the receiving port.

[0006] In an embodiment, the number of the electrode sheets and the support assemblies is multiple. The multiple electrode sheets are arranged at intervals along the flow direction of the ion beam flow. Each electrode sheet is connected with the pocket body through at least one support assembly.

[0007] In an embodiment, the adjacent two electrode sheets along the flow direction of the ion beam flow are a first electrode sheet and a second electrode sheet. The first electrode sheet is close to the pocket body along the flow direction of the ion beam flow. The support assembly connecting the second electrode sheet forms an avoiding groove for avoiding the first electrode sheet.

[0008] In an embodiment, the periphery of the through port of the first electrode sheet is formed with a first protrusion, and the periphery of the through port of the second electrode sheet is formed with a second protrusion. The first protrusion and the second protrusion are arranged towards each other.

[0009] In an embodiment, a minimum dimension between the first electrode sheet and the second electrode sheet along a flow direction of the ion beam current is between 3 mm and 15 mm.

[0010] In an embodiment, the support assembly comprises a first support, an insulating connecting sleeve, and a second support, the insulating connecting sleeve being connected between the first support and the second support, the first support being connected with the bag body, and the second support being connected with the electrode sheet.

[0011] In an embodiment, the first support and the bag body are welded; and / or, the second support and the electrode sheet are welded; and / or, The first support and the bag body are made of red copper; and / or, the second support and the electrode sheet are made of stainless steel.

[0012] In an embodiment, the shape of the electrode sheet is adapted to the shape of the bag body.

[0013] Another aspect of the embodiments of the present application discloses a receiving pocket.

[0014] Still another aspect of the embodiments of the present application discloses an isotope electromagnetic separator comprising the receiver.

[0015] The embodiments of the present application disclose a receiving pocket, a receiver, and an isotope electromagnetic separator, a support assembly is connected between a bag body and an electrode sheet to align a penetrating opening with a receiving opening, a positive voltage greater than an ion beam current is applied to the electrode sheet to form a potential gradient near the penetrating opening, i.e., a higher potential at the edge of the penetrating opening and a lower potential on the axis of the ion beam current, to establish a potential difference to form a radial electric field, the radial electric field can exert a radial converging force on the ion beam current, so that the ion trajectories deviating from the axis will be bent towards the axis, thereby reducing the cross section of the entire ion beam current (reducing the diameter), realizing the convergence of the ion beam current. In this way, on the one hand, the signal-to-noise ratio of the converged ion beam current is low, which is convenient for electrical analysis and research, and can provide a basic condition and improvement idea for ion beam current analysis work; on the other hand, the converged ion beam current is convenient for receiving, which can improve the collection rate of the bag body to isotopes; on the other hand, by arranging the electrode sheet on the bag body, the receiving pocket can have the functions of receiving and converging at the same time, which can reduce the space occupation and the influence on the ion beam current when the converging device is arranged at other narrow positions. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structural schematic diagram of a receiving pocket provided by the embodiments of the present application; Figure 2 A structural schematic diagram of a receiving pocket provided by the embodiments of the present application;Figure 1 Structural schematic diagram of the structure under another perspective; Figure 3 Structural schematic diagram of the support assembly provided for another embodiment of the present application; Figure 4 Structural schematic diagram of the support assembly provided for another embodiment of the present application; Figure 5 Structural schematic diagram of the electrode sheet provided for another embodiment of the present application; Figure 6 Structural schematic diagram of the bag provided for another embodiment of the present application; Figure 7 Structural schematic diagram of the first electrode sheet and the second electrode sheet provided for another embodiment of the present application.

[0017] Explanation of reference signs 100, receiving pocket; 1, bag; 1a, receiving opening; 2, support assembly; 2a, avoiding groove; 21, first support; 22, insulating connecting sleeve; 23, second support; 3, electrode sheet; 3a, through hole; 31, first electrode sheet; 31a, first protrusion; 32, second electrode sheet; 32a, second protrusion. DETAILED DESCRIPTION

[0018] It should be noted that the embodiments and technical features in the present application can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as the explanation and description of the purpose of the present application, and should not be regarded as improper limitation of the present application.

[0019] The present application will be further described in detail below in combination with the drawings and specific embodiments. The description of "first", "second" and the like in the embodiments of the present application is only for the purpose of description, and should not be understood as indicating or implying relative importance or implicitly including at least one feature. In the description of the embodiments of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0020] In order to better understand the receiving pocket provided by the present application, the isotope electromagnetic separator and the receiver are first described.

[0021] The isotope electromagnetic separator provided by the embodiments of the present application comprises the receiver in the following embodiments.

[0022] For example, the isotope electromagnetic separator further comprises an ion source and a separation magnet, the ion source is used to generate an ion beam, and the separation magnet is used to generate a deflection magnetic field, so that the ion beam generated by the ion source is deflected by the magnetic field, so that the ions are separated according to their mass and charge at the end of the magnetic field, and finally received by the corresponding receiver.

[0023] Another aspect of the embodiments of the present application provides a receiver, which comprises the receiving pocket 100 in any of the embodiments.

[0024] Exemplarily, the receiver further comprises a graphite panel, and the receiving pocket 100 can be arranged on the graphite panel by the clamp.

[0025] It should be noted that the receiver is designed according to various parameters required by the isotope electromagnetic separator for collecting isotopes, and is a device integrated with multiple systems such as vacuum, water cooling and control, and does not have high pressure itself, and the installation position of the beam focusing device is not designed, so the electrode fixing scheme needs to be redesigned.

[0026] Another aspect of the embodiments of the present application provides a receiving pocket 100, please refer to Figures 1 to 7 The receiving pocket 100 comprises a pocket body 1, a support assembly 2 and an electrode sheet 3. The pocket body 1 is formed with a receiving opening 1a in communication with an internal space thereof, the electrode sheet 3 is formed with a through opening 3a, the electrode sheet 3 is used to be connected with an external power supply, and the support assembly 2 is connected between the pocket body 1 and the electrode sheet 3 to align the through opening 3a with the receiving opening 1a.

[0027] The pocket body 1 refers to a structure for receiving an ion beam.

[0028] The support assembly 2 refers to a structure for connecting the pocket body 1 and the electrode sheet 3, and for aligning the through opening 3a with the receiving opening 1a.

[0029] The electrode sheet 3 refers to a structure capable of being connected with an external power supply, and capable of forming an electric field after a voltage is applied.

[0030] It should be noted that since the ion beam is positively charged, when the ion beam needs to be focused, the voltage of the electrode sheet 3 needs to be a positive voltage and greater than the voltage of the ion beam. When the voltage of the electrode sheet 3 is set to a negative voltage or the voltage on the electrode sheet 3 is a positive voltage and less than the voltage of the ion beam, the ion beam can be divergent.

[0031] Exemplarily, the graphite panel is formed with a communication opening through which the ion beam passes, the through opening 3a is aligned and communicated with the communication opening, and the ion beam enters the pocket body 1 in sequence from the communication opening, the through opening 3a and the receiving opening 1a.

[0032] The receiving pocket 100 provided by the embodiment of the present application is connected between the bag body 1 and the electrode sheet 3 through the support assembly 2, so that the through hole 3a is aligned with the receiving hole 1a. By applying a positive voltage greater than the ion beam current on the electrode sheet 3, a potential gradient can be formed near the through hole 3a, that is, the potential is higher at the edge of the through hole 3a, and the potential is lower on the axis of the ion beam current, so as to establish a potential difference to form a radial electric field. The radial electric field can exert a radial converging force on the ion beam current, so that the ion trajectories deviating from the axis are bent towards the axis, thereby reducing the cross section of the entire ion beam current (reducing the diameter), realizing the convergence of the ion beam current. In this way, on the one hand, the signal-to-noise ratio of the converged ion beam current is low, which is convenient for electrical analysis and research, and can provide a basis and improvement idea for ion beam current analysis work. On the other hand, the converged ion beam current is convenient for receiving, which can improve the collection rate of the bag body 1 to isotopes. On the other hand, by arranging the electrode sheet 3 on the bag body 1, the receiving pocket 100 can simultaneously have the functions of receiving and converging, so as to reduce the space occupation and the influence on the ion beam current when the converging device is arranged at other small positions.

[0033] The receiver provided by the present application has the advantages of the receiving pocket 100 in the above embodiment, so that it has the ability to receive isotopes and the ability to analyze and adjust the ion beam current.

[0034] The isotope electromagnetic separator provided by the present application has the advantages of the receiver in the above embodiment, so that it has the analysis function and the characteristic of high isotope collection rate.

[0035] In an embodiment, please refer to Figure 1 and Figure 2 The number of the electrode sheets 3 and the support assemblies 2 is multiple, the multiple electrode sheets 3 are arranged at intervals along the flow direction of the ion beam current, and each electrode sheet 3 is connected to the bag body 1 through at least one support assembly 2.

[0036] For example, the number of the electrode sheets 3 can be two, and the number of the support assemblies 2 can be four. The two electrode sheets 3 can be arranged at intervals along the flow direction of the ion beam current, and each electrode sheet 3 can be connected to the bag body 1 through two support assemblies 2.

[0037] Here, by arranging multiple electrode sheets 3 at intervals along the flow direction of the ion beam current, and connecting each electrode sheet 3 through the support assembly 2, the stability of the electrode sheet 3 can be improved, and the ion beam current can be further converged, which is convenient for research, analysis and improvement of the collection rate.

[0038] In an embodiment, please refer to Figure 3 and Figure 4The support assembly 2 comprises a first support 21, an insulation connecting sleeve 22 and a second support 23. The insulation connecting sleeve 22 is connected between the first support 21 and the second support 23. The first support 21 is connected with the bag 1. The second support 23 is connected with the electrode sheet 3.

[0039] Here, by connecting the first support 21 with the bag 1 and the second support 23 with the electrode sheet 3, and then connecting the first support 21 with the second support 23 through the insulation connecting sleeve 22, the electrode sheet 3 and the bag 1 can be insulated from each other. When a positive voltage or a negative voltage is applied to the bag 1, the ion beam current between the bag 1 and the electrode sheet 3 can be accelerated or decelerated, so as to increase the adjustment parameters of the ion beam current, and facilitate the further electrical analysis and research on the ion beam current.

[0040] For example, in an embodiment, the insulation connecting sleeve 22 can be made of ceramic.

[0041] In an embodiment, as shown in Figure 1 , Figure 2 and Figure 4 , the two adjacent electrode sheets 3 along the flow direction of the ion beam current are a first electrode sheet 31 and a second electrode sheet 32. The first electrode sheet 31 is close to the bag 1 along the flow direction of the ion beam current. The support assembly 2 connected with the second electrode sheet 32 forms an avoiding groove 2a for avoiding the first electrode sheet 31.

[0042] For example, the second support 23 connected with the second electrode sheet is bent at one end of the insulation connecting sleeve 22 to form the avoiding groove 2a. When the second support 23 is connected with the bag 1 and the second electrode sheet 32, the avoiding groove 2a formed by the bending of the second support 23 can bypass the first electrode sheet 31 to be connected with the bag 1. In this way, the contact and communication between the first electrode sheet 31 and the second electrode sheet 32 can be avoided, and the working stability can be improved.

[0043] In an embodiment, as shown in Figure 7 , the periphery of the through hole 3a of the first electrode sheet 31 is provided with a first protrusion 31a. The periphery of the through hole 3a of the second electrode sheet 32 is provided with a second protrusion 32a. The first protrusion 31a and the second protrusion 32a are arranged towards each other.

[0044] Here, by arranging the first protrusion 31a and the second protrusion 32a towards each other, the distance between the first electrode sheet 31 and the second electrode sheet 32 can be reduced. The ion beam current flowing out of the second protrusion 32a can pass through the first protrusion 31a into the first electrode sheet 31 to be focused more quickly, and the divergence can be reduced.

[0045] In an embodiment, as shown in Figure 7The through hole 3a of the first electrode sheet 31 and the through hole 3a of the second electrode sheet 32 are staggered along the flow direction of the ion beam.

[0046] It should be noted that the approximate trajectory of the ion beam from the ion source to the receiver is semicircular, so that the staggered through holes 3a can make the ion beam pass through the two electrode sheets 3 better.

[0047] In an embodiment, the minimum size between the first electrode sheet 31 and the second electrode sheet 32 along the flow direction of the ion beam is between 3 mm and 15 mm.

[0048] The minimum size between the first electrode sheet 31 and the second electrode sheet 32 along the flow direction of the ion beam is the distance between the first protrusion 31a and the second protrusion 32a.

[0049] For example, the minimum size between the first electrode sheet 31 and the second electrode sheet 32 along the flow direction of the ion beam can be 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm or 15 mm, etc.

[0050] Here, by setting appropriate size, the ion beam can be improved while reducing the occurrence of spark breakdown.

[0051] In an embodiment, the first support 21 and the bag body 1 are welded. In this way, not only can the connection strength between the first support 21 and the bag body 1 be improved, but also additional fixing clamps can be avoided on the bag body 1 to reduce costs and reduce damage to the bag body 1.

[0052] In an embodiment, the second support 23 and the electrode sheet 3 are welded.

[0053] In this way, the connection strength between the second support 23 and the electrode sheet 3 can be improved, and the working stability is good.

[0054] In an embodiment, the first support 21 and the bag body 1 are made of red copper.

[0055] Here, the first support 21 and the bag body 1 are made of red copper, which not only facilitates welding, but also the bag body 1 made of red copper can effectively cope with ion beam bombardment and sputtering, and red copper also has good thermal conductivity, facilitating cooling of the bag body 1.

[0056] In an embodiment, the second support 23 and the electrode sheet 3 are made of stainless steel.

[0057] Here, the second support 23 and the electrode sheet 3 are made of stainless steel, which not only facilitates welding, but also has good chemical stability.

[0058] In one embodiment, referring to Figure 5 and Figure 6 The shape of the electrode sheet 3 is adapted to the shape of the bag 1.

[0059] For example, the bag 1 can have a curved arc, and the curvature radius of the curved arc can be between 700 mm and 2000 mm. Correspondingly, the electrode sheet 3 and the through hole 3a also have the same curved arc, and the curved arc can be determined according to the cross-sectional shape of the ion beam.

[0060] In this way, by adapting the shape of the electrode sheet 3 to the shape of the bag 1, it is beneficial to uniformly receive the ion beam and reduce isotope evaporation.

[0061] For example, in one embodiment, in the process of separating rubidium isotopes by the isotope electromagnetic separator, by connecting 3000 V positive voltage on the first electrode sheet 31 and the second electrode sheet 32, and at the same time applying 1000 V positive voltage on the bag 1, the rubidium ion beam passing through the graphite panel will be compressed and converged by the potential field formed by the electrode sheet 3 which is also positively charged, and will impact on the bag 1. Because the bag 1 also has 1000 V positive voltage, the ion beam will be decelerated by 1000 eV as a whole.

[0062] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application is included in the protection scope of the present application.

Claims

1. A receiving pocket for an isotope electromagnetic separator, characterized in that, The receiving pocket includes a bag body, a support assembly, and an electrode plate. The bag body has a receiving port communicating with its internal space, and the electrode plate has a through-hole for connecting to an external power source. The support assembly is connected between the bag body and the electrode plate to align the through-hole with the receiving port.

2. The receiving pocket according to claim 1, characterized in that, The number of electrode sheets and the number of support components are both multiple. The multiple electrode sheets are arranged at intervals along the flow direction of the ion beam, and each electrode sheet is connected to the bag body through at least one support component.

3. The receiving pocket according to claim 2, characterized in that, Two adjacent electrode plates along the flow direction of the ion beam are a first electrode plate and a second electrode plate. The first electrode plate is close to the bag body along the flow direction of the ion beam, and the support assembly connecting the second electrode plate forms a clearance groove, which is used to avoid the first electrode plate.

4. The receiving pocket according to claim 3, characterized in that, The first electrode sheet has a first protrusion formed around the periphery of the through-hole, and the second electrode sheet has a second protrusion formed around the periphery of the through-hole, with the first protrusion and the second protrusion facing each other.

5. The receiving pocket according to claim 3, characterized in that, The minimum dimension between the first electrode and the second electrode along the flow direction of the ion beam is between 3 mm and 15 mm.

6. The receiving pocket according to any one of claims 1 to 5, characterized in that, The support assembly includes a first support member, an insulating connecting sleeve, and a second support member. The insulating connecting sleeve is connected between the first support member and the second support member. The first support member is connected to the bag body, and the second support member is connected to the electrode sheet.

7. The receiving pocket according to claim 6, characterized in that, The first support member is welded to the bag body; and / or, The second support member is welded to the electrode sheet; and / or, The first support member and the bag body are made of copper; and / or, The second support and the electrode sheet are made of stainless steel.

8. The receiving pocket according to claim 1, characterized in that, The shape of the electrode sheet is adapted to the shape of the bag body.

9. A receiver, characterized in that, Includes the receiving pocket as described in any one of claims 1 to 8.

10. An isotope electromagnetic separator, characterized in that, Includes the receiver as described in claim 9.

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