Faraday cup detection device for xenon isotope

Abstract

The utility model relates to the technical field of mass spectrometers, and provides a Faraday cup detection device for xenon isotope, which comprises a receiver shell, a receiver terminal flange and a receiver mechanism, a first through groove matched with the receiver mechanism is formed in the top of the receiver shell, the receiver terminal flange is fixedly connected with the receiver mechanism, the receiver terminal flange is further fixedly connected with the receiver shell, and the receiver mechanism is provided with a plurality of shielding pieces used for grounding. Specific slit spacing is set for deflection of xenon isotope passing ions in a magnetic field, and a grounded shielding sheet is additionally arranged between two Faraday cups, so that mutual interference between the Faraday cups is effectively prevented, and the accuracy of final abundance ratio calculation is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mass spectrometer technical field, specifically, relate to a kind of Faraday cup detection device for xenon isotope. BACKGROUND

[0002] As the core equipment of isotope abundance analysis, the design of ion receiving system of mass spectrometer directly affects the measurement accuracy. As the main ion detector of traditional mass spectrometer, Faraday cup realizes isotope abundance detection by converting ion kinetic energy into current signal. For xenon isotope analysis, the mass range covers 124-136amu, and the mass difference between adjacent isotopes is small, which leads to low spatial separation of ion beam after magnetic field deflection. This puts high requirements on the resolution, sensitivity and anti-interference ability of the detector. When receiving multiple isotope signals, the traditional Faraday cup array has the following problems: serious interference between cups, insufficient attenuation of high-frequency electromagnetic field by traditional shielding structure, signal crosstalk caused by capacitive coupling effect between adjacent Faraday cups, especially significant error introduced in low-abundance isotope measurement; and rigid connection between cup body and amplifier is easily affected by mechanical vibration, leading to baseline drift. Therefore, there are certain drawbacks when detecting xenon isotope. SUMMARY

[0003] The utility model aims at providing a kind of Faraday cup detection device for xenon isotope, which sets a specific slit spacing according to the deflection of ions in magnetic field, and effectively prevents mutual interference between Faraday cups by installing a grounded shielding sheet between the two Faraday cups, improving the accuracy of final abundance ratio calculation.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0005] The Faraday cup detection device for xenon isotope provided by the present application embodiment includes a receiver housing, a receiver terminal flange and a receiver mechanism. The receiver housing is provided with a receiving cavity for accommodating the receiver mechanism. A first through slot is formed in the top of the receiver housing to match the receiver mechanism. The receiver terminal flange is fixedly connected with the receiver mechanism and the receiver housing. The receiver mechanism is provided with a plurality of shielding sheets for grounding.

[0006] When the ions ionized by the ion source hit the receiver mechanism through the deflection of the mass analyzer, the kinetic energy of the ions is converted into electron flow, forming an electric current. The size of the current is proportional to the number of ions entering the receiver mechanism. By measuring the current, the number of specific isotopes in the sample can be obtained. The shielding sheet eliminates the interference of electrostatic field and effectively suppresses electromagnetic noise, improving the signal-to-noise ratio of signal detection.

[0007] When the receiver mechanism receives the signal, since the ions are directional and hit into the Faraday cup, without the shielding piece, the parameter signal received by the computer shows that the other two Faraday cups on both sides of the Faraday cup also receive a certain signal, because the shielding without the shielding piece leads to the dispersion of ions into the Faraday cups on both sides, so that the current of the Faraday cup receiving the signal produces an error, finally leading to a serious deviation of the calculated sample abundance, and the required detection effect cannot be achieved, and accurate detection data cannot be provided, and the application solves the technical defects through the setting of the shielding piece, and the accuracy of the detection data is significantly improved.

[0008] In some embodiments of the utility model, the above-mentioned receiver mechanism includes a slit piece, a slit seat, a Faraday cup assembly and a support frame, the slit seat is provided with a second through groove matched with the slit piece, the slit piece is embedded in the second through groove, the slit piece is provided with a slit groove group for ion beam passing, the Faraday cup assembly is fixedly connected with the inner wall of the slit seat through the support frame, the slit piece is installed on the slit seat by M2 screw and is embedded in the second through groove of the slit seat, the ion beam path is guided through the slit groove group, the ion beam incidence direction is accurately controlled, and scattering is reduced.

[0009] In some embodiments of the utility model, the inner wall of the above-mentioned slit seat is further provided with a suppression grid, the suppression grid is provided with a plurality of through holes corresponding to the slit groove group, and the suppression grid is located between the slit seat and the Faraday cup assembly; the suppression grid is added between the slit seat and the Faraday cup assembly, the through holes of the suppression grid are aligned with the slit groove group, secondary electron escape is suppressed by using an electric field or physical barrier, secondary electron interference is effectively reduced, and the accuracy of ion detection is improved.

[0010] In some embodiments of the utility model, the above-mentioned suppression grid and slit seat are connected through M2 screw, and ceramic gaskets are arranged on the M2 screw, so that the suppression grid and the slit seat are separated to ensure insulation therebetween.

[0011] In some embodiments of this utility model, the aforementioned slit array includes a first slit, a second slit, a third slit, a fourth slit, a fifth slit, a sixth slit, a seventh slit, an eighth slit, and a ninth slit. A first spacing is fixed between the first and second slits, a second spacing is fixed between the second and third slits, a third spacing is fixed between the third and fourth slits, a fourth spacing is fixed between the fourth and fifth slits, a fifth spacing is fixed between the fifth and sixth slits, a sixth spacing is fixed between the sixth and seventh slits, a seventh spacing is fixed between the seventh and eighth slits, and an eighth spacing is fixed between the eighth and ninth slits. The spacing between adjacent slots forms a gradient distribution, optimizing the spatial resolution of the ion beam. The gradient spacing adapts to xenon isotopes of different energies or masses, enabling multi-channel separation detection. The high-density slit layout improves detection efficiency and reduces data acquisition time.

[0012] In some embodiments of this utility model, the first spacing is 6.67 mm, the second spacing is 6.44 mm, the third spacing is 3.13 mm, the fourth spacing is 3.09 mm, the fifth spacing is 3.04 mm, the sixth spacing is 2.99 mm, the seventh spacing is 5.83 mm, and the eighth spacing is 5.66 mm. The precise value of each slit spacing is determined by xenon isotope deflection calculation, matching the physical characteristics of xenon isotopes. The specific spacing design meets the specific detection requirements of xenon isotopes, maximizes the ion beam focusing effect, reduces energy loss, and significantly improves the xenon isotope mass resolution after numerical optimization.

[0013] In some embodiments of this utility model, the above-mentioned Faraday cup assembly is composed of nine Faraday cups stacked at intervals. Each Faraday cup includes a U-shaped frame and side plates. The side plates are embedded in the U-shaped frame. The nine Faraday cups correspond to nine slits respectively. The arrangement design is made for the specific detection of xenon isotopes, which can simultaneously receive nine signals and measure nine isotopes. The side plates are fixed in the U-shaped frame by electric welding. The side plates are required to be straight and without dents in order to achieve accurate detection of xenon isotopes.

[0014] In some embodiments of this utility model, the support frame includes a support plate and several long screws. The support plate is fixedly connected to the inner wall of the slit seat, and the several long screws are fixedly connected to the surface of the support plate. The several long screws pass through nine Faraday cups, so that the nine Faraday cups are fixed on the long screws by nut spacing. The spacing of the nine Faraday cups corresponds one-to-one with the slit groove group. The long screws provide rigid support to ensure that the Faraday cups are strictly aligned with the slit grooves. At the same time, this design allows each Faraday cup to have the function of individual replacement to prevent accidental damage. Compared with the one-piece cup design in the prior art, it has more advantages in terms of maintenance and repair convenience.

[0015] In some embodiments of this utility model, the U-shaped opening of the U-shaped skeleton faces the direction of the slit array to ensure that the ion beam enters the side plate after passing through the slit array.

[0016] In some embodiments of this utility model, the aforementioned long screws all penetrate each shielding plate, and each shielding plate is located between two Faraday cups. By grounding, a local shielding is formed, which effectively prevents mutual interference between Faraday cups and improves the accuracy of the final abundance ratio calculation.

[0017] In some embodiments of this utility model, a ceramic plate is further provided between the shielding plate and the Faraday cup. The ceramic plate is sleeved on the long screw. The high insulation of ceramics blocks current leakage, further reducing leakage current, improving signal fidelity, and extending the service life of the device due to its high temperature resistance and corrosion resistance.

[0018] In some embodiments of this utility model, the spacing between the above-mentioned nine Faraday cups is determined based on xenon isotope deflection calculations, which is consistent with the spacing value of the slit groove group, and the set spacing value is achieved by increasing or decreasing the number of ceramic pieces.

[0019] In some embodiments of this utility model, the receiver terminal flange is provided with nine ceramic terminals. The nine ceramic terminals are connected to nine Faraday cups one by one by stainless steel wires to achieve independent signal transmission. The ceramic terminals have excellent insulation performance to avoid signal short circuits, and the stainless steel wires are corrosion resistant and have stable conductivity to ensure long-term reliable data transmission.

[0020] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0021] 1. By optimizing the spacing of the nine slit slots, it can accommodate xenon isotopes of different energies or masses, significantly improving mass resolution and spatial resolution, supporting simultaneous detection of multiple isotopes, and achieving high-precision detection and multi-channel separation capabilities.

[0022] 2. Precise adjustment of the spacing between the gate aperture and the Faraday cup effectively suppresses secondary electron escape, reduces signal interference, and ensures the accuracy of the ion beam path.

[0023] 3. The shielding sheet eliminates electrostatic interference through grounding and is located between adjacent Faraday cups. Combined with the high insulation of the ceramic sheet, it blocks current leakage and electric field crosstalk, greatly improving signal independence and signal-to-noise ratio.

[0024] 4. The use of ceramic plates and ceramic terminals enhances the device's high-temperature resistance and corrosion resistance, extending the equipment's service life. Stainless steel wire ensures conductivity while resisting environmental corrosion.

[0025] The 5.9 independent Faraday cups can simultaneously acquire multi-channel data, and the adjustable support frame design provides room for expansion for future upgrades or adaptation to other isotope detection.

[0026] 6. The modular assembly of the slit seat, Faraday cup assembly and support frame simplifies the maintenance process and makes it easy to replace when one of the Faraday cups is damaged, reducing maintenance costs. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the overall structure of a Faraday cup detection device for xenon isotopes provided by this utility model. Figure 1 ;

[0029] Figure 2 A schematic diagram of the overall structure of a Faraday cup detection device for xenon isotopes provided by this utility model. Figure 2 ;

[0030] Figure 3 An exploded view of a Faraday cup detection device for xenon isotopes provided by this utility model;

[0031] Figure 4 A schematic diagram of the receiver mechanism of a Faraday cup detection device for xenon isotopes provided by this utility model. Figure 1 ;

[0032] Figure 5 A schematic diagram of the receiver mechanism of a Faraday cup detection device for xenon isotopes provided by this utility model. Figure 2 ;

[0033] Figure 6 A schematic diagram of the Faraday cup assembly structure of a Faraday cup detection device for xenon isotopes provided by this utility model;

[0034] Figure 7 This is a schematic diagram of the suppression grid structure of a Faraday cup detection device for xenon isotopes provided by this utility model.

[0035] Icons: 100 - Receiver housing; 200 - Receiver terminal flange; 210 - Ceramic terminal; 300 - Receiver mechanism; 310 - Slit seat; 320 - Slit plate; 321 - First slit groove; 322 - Second slit groove; 323 - Third slit groove; 324 - Fourth slit groove; 325 - Fifth slit groove; 326 - Sixth slit groove; 327 - Seventh slit groove; 328 - Eighth slit groove; 329 - Ninth slit groove; 330 - Faraday cup assembly; 331 - Faraday cup; 3310 - U-shaped frame; 3311 - Side plate; 332 - Ceramic plate; 340 - Support frame; 341 - Support plate; 342 - Long screw; 343 - Nut; 350 - Shielding plate; 360 - Suppression grid; 361 - Through hole. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] Example

[0039] Please refer to Figures 1-7 , Figure 1 The diagram shown is a schematic representation of the overall structure of this embodiment. Figure 1 ; Figure 2 The diagram shown is a schematic representation of the overall structure of this embodiment. Figure 2 ; Figure 3 The image shown is an exploded view of this embodiment; Figure 4 The diagram shown is a schematic representation of the receiver mechanism 300 in this embodiment. Figure 1 ; Figure 5 The diagram shown is a schematic representation of the receiver mechanism 300 in this embodiment. Figure 2 ; Figure 6 The diagram shown is a structural schematic of the Faraday cup assembly 330 in this embodiment. Figure 7 The diagram shown is a schematic diagram of the suppression gate 360 ​​structure in this embodiment.

[0040] like Figures 1-3As shown, this embodiment provides a Faraday cup 331 detection device for xenon isotopes, which includes a receiver housing 100, a receiver terminal flange 200, and a receiver mechanism 300. The receiver housing 100 has a receiving cavity for accommodating the receiver mechanism 300. A first through slot that fits into the receiver mechanism 300 is formed on the top of the receiver housing 100. The receiver terminal flange 200 is fixedly connected to the receiver mechanism 300. The receiver terminal flange 200 is also fixedly connected to the receiver housing 100. The receiver mechanism 300 is provided with a plurality of shielding plates 350 for grounding.

[0041] Please refer to Figure 4 and Figure 5 In an embodiment of this utility model, the receiver mechanism 300 includes a slit plate 320, a slit seat 310, a Faraday cup assembly 330, and a support frame 340. The slit seat 310 has a second through groove that fits into the slit plate 320. The slit plate 320 is embedded in the second through groove. The slit plate 320 has a group of slit slots for the passage of the ion beam. The Faraday cup assembly 330 is fixedly connected to the inner wall of the slit seat 310 through the support frame 340.

[0042] In this embodiment, the slit plate 320 is installed on the slit seat 310 with an M2 screw and embedded in the second through groove of the slit seat 310. The ion beam path is guided by the slit groove group, the incident direction of the ion beam is precisely controlled, and scattering is reduced.

[0043] Please refer to Figure 7 In an embodiment of the present invention, the inner wall of the slit seat 310 is further provided with a suppression grid 360. The suppression grid 360 has a plurality of through holes 361 corresponding to the slit slot group. The suppression grid 360 is located between the slit seat 310 and the Faraday cup assembly 330.

[0044] In this embodiment, a suppression grid 360 is added between the slit seat 310 and the Faraday cup assembly 330. The through hole 361 of the suppression grid 360 is aligned with the slit groove group. The secondary electrons are suppressed by electric field or physical barrier, which effectively reduces secondary electron interference and improves the accuracy of ion detection.

[0045] Please refer to Figure 7 In an embodiment of this utility model, the suppression grid 360 and the slit seat 310 are connected by an M2 screw, and the M2 screw is provided with a ceramic washer so that the suppression grid 360 and the slit seat 310 are separated to ensure mutual insulation.

[0046] Please refer to Figure 4In an embodiment of this utility model, the aforementioned slit groove group includes a first slit groove 321, a second slit groove 322, a third slit groove 323, a fourth slit groove 324, a fifth slit groove 325, a sixth slit groove 326, a seventh slit groove 327, an eighth slit groove 328, and a ninth slit groove 329. A first gap is fixed between the first slit groove 321 and the second slit groove 322, and a second gap is fixed between the second slit groove 322 and the third slit groove 323. A third gap is fixed between the slit groove 323 and the fourth slit groove 324; a fourth gap is fixed between the fourth slit groove 324 and the fifth slit groove 325; a fifth gap is fixed between the fifth slit groove 325 and the sixth slit groove 326; a sixth gap is fixed between the sixth slit groove 326 and the seventh slit groove 327; a seventh gap is fixed between the seventh slit groove 327 and the eighth slit groove 328; and an eighth gap is fixed between the eighth slit groove 328 and the ninth slit groove 329.

[0047] In this embodiment, the spacing between adjacent slots forms a gradient distribution, which optimizes the spatial resolution of the ion beam. The gradient spacing is adapted to xenon isotopes with different energies or masses, enabling multi-channel separation and detection. The high-density slit layout improves detection efficiency and reduces data acquisition time.

[0048] Please refer to Figure 4 In the embodiments of this utility model, the first spacing is 6.67mm, the second spacing is 6.44mm, the third spacing is 3.13mm, the fourth spacing is 3.09mm, the fifth spacing is 3.04mm, the sixth spacing is 2.99mm, the seventh spacing is 5.83mm, and the eighth spacing is 5.66mm.

[0049] In this embodiment, the precise value of the spacing between each slit is determined by xenon isotope deflection calculation, matching the physical properties of xenon isotopes. The specific spacing design meets the specific detection requirements of xenon isotopes, maximizing the ion beam focusing effect, reducing energy loss, and significantly improving the xenon isotope mass resolution after numerical optimization.

[0050] Please refer to Figure 5 and Figure 6 In an embodiment of the present invention, the Faraday cup assembly 330 is composed of nine Faraday cups 331 stacked at intervals. Each Faraday cup 331 includes a U-shaped frame 3310 and a side plate 3311. The side plate 3311 is embedded in the U-shaped frame 3310, and the nine Faraday cups 331 correspond to nine slits.

[0051] In this embodiment, the arrangement design for the specific detection of xenon isotopes can simultaneously receive 9 signals and measure 9 isotopes. The side plate 3311 is fixed in the U-shaped frame 3310 by electric welding. The side plate 3311 is required to be straight and without dents in order to achieve accurate detection of xenon isotopes.

[0052] Please refer to Figure 5 and Figure 6 In an embodiment of this utility model, the support frame 340 includes a support plate 341 and a plurality of long screws 342. The support plate 341 is fixedly connected to the inner wall of the slit seat 310, and the plurality of long screws 342 are all fixedly connected to the plate surface of the support plate 341. The plurality of long screws 342 all penetrate through 9 Faraday cups 331, so that the 9 Faraday cups 331 are fixed on the long screws 342 at intervals by nuts 343, and the interval positions of the 9 Faraday cups 331 correspond one-to-one with the slit groove group.

[0053] In this embodiment, the long screw 342 provides rigid support to ensure that the Faraday cup 331 is strictly aligned with the slit groove. At the same time, this design allows each Faraday cup 331 to be replaced individually, preventing accidental damage. Compared with the one-piece cup design in the prior art, it is more convenient for maintenance and repair.

[0054] Please refer to Figure 5 and Figure 6 In an embodiment of this utility model, the U-shaped opening of the U-shaped skeleton 3310 faces the direction of the slit groove group to ensure that the ion beam enters the side plate 3311 after passing through the slit groove group.

[0055] Please refer to Figure 5 and Figure 6 In the embodiments of this utility model, the aforementioned plurality of long screws 342 all penetrate each shielding plate 350, and each shielding plate 350 is located between two Faraday cups 331.

[0056] In this embodiment, local shielding is formed by grounding, which effectively prevents mutual interference between Faraday cups 331 and improves the accuracy of the final abundance ratio calculation.

[0057] Please refer to Figure 6 In an embodiment of this utility model, a ceramic sheet 332 is further provided between the shielding sheet 350 and the Faraday cup 331, and the ceramic sheet 332 is sleeved on the long screw 342.

[0058] In this embodiment, the high insulation properties of ceramics are used to block current leakage, further reducing leakage current, improving signal fidelity, and extending the service life of the device due to its high temperature resistance and corrosion resistance.

[0059] Please refer to Figure 4 , Figure 5 and Figure 6 In the embodiments of this utility model, the arrangement spacing between the above-mentioned nine Faraday cups 331 is determined according to the xenon isotope deflection calculation, which is consistent with the spacing value of the slit groove group, and the set spacing value is achieved by increasing or decreasing the number of ceramic pieces 332.

[0060] Please refer to Figure 3 In an embodiment of this utility model, the receiver terminal flange 200 is provided with nine ceramic terminals 210, and the nine ceramic terminals 210 are respectively connected to nine Faraday cups 331 one by one by stainless steel wire.

[0061] In this embodiment, by connecting the ceramic terminal 210 to the Faraday cup 331 one-to-one, independent signal transmission is achieved. The ceramic terminal 210 has excellent insulation performance, avoiding signal short circuits. The stainless steel wire is corrosion-resistant and has stable conductivity, ensuring long-term reliable data transmission.

[0062] In use, ions of different mass numbers are delivered to a Faraday receiver. The signal received by the Faraday receiver is amplified by a microcurrent amplifier, and the microcurrent signal is converted into a DC voltage signal. The signal is then acquired by a computer data acquisition system.

[0063] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A Faraday cup detection device for xenon isotopes, characterized in that, Include: The receiver shell, receiver terminal flange and receiver mechanism, the receiver shell is provided with containing cavity for containing the receiver mechanism, the top of the receiver shell is provided with the first through slot matched with the receiver mechanism, the receiver terminal flange is fixedly connected with the receiver mechanism, and the receiver terminal flange is also fixedly connected with the receiver shell; The receiver mechanism is provided with a plurality of shielding sheets for grounding.

2. A Faraday cup detection device for xenon isotopes according to claim 1, characterized in that, The receiver mechanism includes slit sheet, slit seat, Faraday cup assembly and support frame, the slit seat is provided with the second through slot matched with the slit sheet, the slit sheet is embedded in the second through slot, the slit sheet is provided with slit groove group for ion beam passing, and the Faraday cup assembly is fixedly connected with the inner wall of the slit seat through the support frame.

3. A Faraday cup detection device for xenon isotopes according to claim 2, characterized in that, The inner wall of the slit seat is also provided with a suppression grid, the suppression grid is provided with a plurality of through holes corresponding to the slit groove group, and the suppression grid is located between the slit seat and the Faraday cup assembly.

4. A Faraday cup detection device for xenon isotopes according to claim 2, characterized in that, The slit groove group includes first slit groove, second slit groove, third slit groove, fourth slit groove, fifth slit groove, sixth slit groove, seventh slit groove, eighth slit groove and ninth slit groove, the first slit groove and the second slit groove are fixedly connected with the first spacing, the second slit groove and the third slit groove are fixedly connected with the second spacing, the third slit groove and the fourth slit groove are fixedly connected with the third spacing, the fourth slit groove and the fifth slit groove are fixedly connected with the fourth spacing, the fifth slit groove and the sixth slit groove are fixedly connected with the fifth spacing, the sixth slit groove and the seventh slit groove are fixedly connected with the sixth spacing, the seventh slit groove and the eighth slit groove are fixedly connected with the seventh spacing, and the eighth slit groove and the ninth slit groove are fixedly connected with the eighth spacing.

5. A Faraday cup detection device for xenon isotopes according to claim 4, characterized in that, The first spacing is 6.67mm, the second spacing is 6.44mm, the third spacing is 3.13mm, the fourth spacing is 3.09mm, the fifth spacing is 3.04mm, the sixth spacing is 2.99mm, the seventh spacing is 5.83mm, and the eighth spacing is 5.66mm.

6. A Faraday cup detection device for xenon isotopes according to claim 2, characterized in that, The Faraday cup assembly is composed of 9 Faraday cups stacked at intervals, the Faraday cup includes U-shaped framework and side plate, and the side plate is embedded in the U-shaped framework.

7. A Faraday cup detection device for xenon isotopes according to claim 6, characterized in that, The support frame includes support plate and a plurality of long screws, the support plate is fixedly connected with the inner wall of the slit seat, a plurality of long screws are fixedly connected with the plate surface of the support plate, a plurality of long screws penetrate 9 Faraday cups, so that 9 Faraday cups are fixed on the long screws, and the interval positions of 9 Faraday cups correspond to the slit groove group one by one.

8. A Faraday cup detection device for xenon isotopes according to claim 7, characterized in that, A plurality of long screws penetrate each shielding sheet, and any shielding sheet is located between two Faraday cups.

9. A Faraday cup detection device for xenon isotopes according to claim 8, characterized in that, The shielding sheet and the Faraday cup are also provided with a ceramic sheet, and the ceramic sheet is sleeved on the long screw.

10. A Faraday cup detection device for xenon isotopes according to claim 6, characterized in that, The receiver terminal flange is provided with 9 ceramic terminals, and the 9 ceramic terminals are respectively connected with the 9 Faraday cups in one-to-one correspondence through stainless steel wires.

Images