CN201708125U - Faraday cup - Google Patents
Faraday cup Download PDFInfo
- Publication number
- CN201708125U CN201708125U CN2010202181051U CN201020218105U CN201708125U CN 201708125 U CN201708125 U CN 201708125U CN 2010202181051 U CN2010202181051 U CN 2010202181051U CN 201020218105 U CN201020218105 U CN 201020218105U CN 201708125 U CN201708125 U CN 201708125U
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- radome
- ion
- cup
- faraday cup
- sealing end
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Abstract
The utility model discloses a Faraday cup, which comprises an ion collecting cup, wherein the ion collecting cup comprises an opening end, a sealing end and a cup body; the outside of the cup body is wrapped with an insulation cover; the opening end is provided with a front shield cover; the sealing end is provided with a back shield cover; and a front insulation baffle plate is additionally arranged between the front shield cover and the opening end, and a back insulation baffle plate is additionally arranged between the back shield cover and the sealing end. In the Faraday cup of the utility model, the outside of the ion collecting cup is additionally provided with the metal shield cover structure, so the interference caused by the ion scattered from the inside of the vacuum chamber can be shielded, and therefore the target number of ion can be accurately and effectively collected.
Description
Technical field
The utility model relates to a kind ofly can be specifically related to a kind of Faraday cup with the device of ion collection.
Background technology
Mass spectrometer claims mass spectrograph again, a kind of separation with detect different isotopic instruments, promptly according to charged particle can deflection in electromagnetic field principle, by the quasi-instrument that the mass discrepancy of material atom, molecule or molecular fragment is separated and detection material is formed.Mass spectrometer is a core with ion source, mass analyzer and ion detector.Ion source is to make sample molecule Ionized device under high vacuum condition.Molecule after the ionization is because of having accepted multiple fragment ion and the neutral particle that too much energy can further be fragmented into less quality.They obtain the mean kinetic energy with identical energy and enter mass analyzer under the accelerating field effect.Mass analyzer is to enter the ion of different quality wherein simultaneously, by the device of mass-to-charge ratio m/z size separation.Ion after the separation enters ion detector successively, gathers and amplifies ion signal, and machine is handled as calculated, is depicted as mass spectrogram.Ion source, mass analyzer and ion detector all respectively have polytype.Mass spectrometer is divided into isotope mass spectrometer, inorganic mass spectrometer and organic mass spectrometer by range of application; Be divided into high-resolution, middle resolution and Low Resolution Mass Spectra instrument by resolving power; Be divided into static instrument and dynamic instrument by operation principle.
In the existing ion collection device, what often use is a kind of Faraday cup device.Faraday cup is a traditional beam intensity measurement mechanism, has played irreplaceable effect at the normalization measurement of accelerator intensity, the aspects such as demarcation of detector.
Therefore the ion flow of required detection all is Pi Anji in the mass spectrometer vacuum cavity, be easy to be subjected to external interference, but the Faraday cup structure of existing structure is too simple, is not fine to the shield effectiveness of outside, is subject to disturb, and causes measuring inaccurate.
The utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of Faraday cup, and the external disturbance influence that this device is subjected to is little, can the effective collection ion.
For solving the problems of the technologies described above, realize above-mentioned technique effect, the utility model adopts following technical scheme:
A kind of Faraday cup, comprise an ion collection cup, described ion collection cup comprises an openend, a sealing end and one glass of body, described cup body is wrapped with an insulating cover, radome before described open end is provided with one, described sealing end place is provided with a back radome, is equipped with a preceding insulation barrier between described preceding radome and the openend, is equipped with a back insulation barrier between described back radome and the sealing end.
Further, mutual interlock constitutes a cavity between described preceding radome and the described back radome.
Preferably, have a bellmouth on the described preceding radome, the aperture of described bellmouth can be designed to the various different sizes that 2mm opens wide fully to Faraday cup, to satisfy different test requests.
Further, there are a shielding conductor fairlead, described shielding conductor fairlead to run through described back insulation barrier and described back radome outside the described sealing end.
Preferably, the material of described preceding radome, back radome and ion collection cup is a brass.
Preferably, insulation barrier, back insulation barrier and insulating cover just comes to be Teflon before described.
Compared with prior art, Faraday cup of the present utility model has increased the metallic shield cover structure outside the ion collection cup, can mask the interference that the ion of vacuum cavity scattering-in causes, and therefore can collect the object ion number accurately and effectively.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the profile of Faraday cup of the present utility model.
Number in the figure explanation: 1. bellmouth, 2. before radome, 3. back radome, 4. shielding conductor fairlead, 5. back insulation barrier, 6. ion collection cup, 7. insulating cover, 8. before insulation barrier, 9. openend, 10. sealing end, 11. glasss of bodies.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
See also shown in Figure 1, a kind of Faraday cup, comprise an ion collection cup 6, described ion collection cup 6 comprises an openend 9, a sealing end 10 and one glass of body 11, described cup body 11 is wrapped with an insulating cover 7, radome 2 before described openend 9 places are provided with, and described sealing end 10 places are provided with a back radome 3, insulation barrier 8 before being equipped with one between radome 2 and the openend 9 before described is equipped with a back insulation barrier 5 between described back radome 3 and the sealing end 10.
Further, mutual interlock constitutes a cavity between described preceding radome 2 and the described back radome 3.
Preferably, have a bellmouth 1 on the described preceding radome 2, the aperture of described bellmouth 1 can be designed to the various different sizes that 2mm opens wide fully to Faraday cup, to satisfy different test requests.
Further, there is a shielding conductor fairlead 4 in described sealing end 10 outsides, and described shielding conductor fairlead 4 runs through described back insulation barrier 5 and described back radome 3.
Preferably, the material of described preceding radome 2, back radome 3 and ion collection cup 6 is a brass.
Preferably, the material of described preceding insulation barrier 8, back insulation barrier 5 and insulating cover 7 is a Teflon.
More than Faraday cup that the utility model embodiment is provided be described in detail; for one of ordinary skill in the art; thought according to the utility model embodiment; the part that all can change in specific embodiments and applications, therefore all any changes of being made according to the utility model design philosophy are all within protection range of the present utility model.
Claims (5)
1. Faraday cup, comprise an ion collection cup (6), described ion collection cup (6) comprises an openend (9), a sealing end (10) and one glass of body (11), described cup body (11) is wrapped with an insulating cover (7), it is characterized in that: radome (2) before described openend (9) locates to be provided with, described sealing end (10) locates to be provided with a back radome (3), insulation barrier (8) before being equipped with one between radome (2) and the openend (9) before described is equipped with a back insulation barrier (5) between described back radome (3) and the sealing end (10).
2. Faraday cup according to claim 1 is characterized in that: mutual interlock constitutes a cavity between described preceding radome (2) and the described back radome (3).
3. Faraday cup according to claim 1 and 2 is characterized in that: have a bellmouth (1) on the radome (2) before described, the aperture of described bellmouth (1) is at least more than 2mm.
4. Faraday cup according to claim 1 and 2 is characterized in that: described sealing end (10) outside has a shielding conductor fairlead (4), described shielding conductor fairlead (4) to run through described back insulation barrier (5) and described back radome (3).
5. Faraday cup according to claim 3 is characterized in that: described bellmouth (1) is arranged on the center of the front panel of described preceding radome (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202181051U CN201708125U (en) | 2010-06-08 | 2010-06-08 | Faraday cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202181051U CN201708125U (en) | 2010-06-08 | 2010-06-08 | Faraday cup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201708125U true CN201708125U (en) | 2011-01-12 |
Family
ID=43445280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202181051U Expired - Fee Related CN201708125U (en) | 2010-06-08 | 2010-06-08 | Faraday cup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201708125U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462622A (en) * | 2016-06-06 | 2017-12-12 | 塞莫费雪科学（不来梅）有限公司 | Apparatus and method for gas at rest mass spectral analysis |
| CN112837987A (en) * | 2020-12-30 | 2021-05-25 | 四川红华实业有限公司 | Adjustable shielding box structure |
-
2010
- 2010-06-08 CN CN2010202181051U patent/CN201708125U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462622A (en) * | 2016-06-06 | 2017-12-12 | 塞莫费雪科学（不来梅）有限公司 | Apparatus and method for gas at rest mass spectral analysis |
| CN107462622B (en) * | 2016-06-06 | 2020-12-08 | 塞莫费雪科学（不来梅）有限公司 | Apparatus and method for static gas mass spectrometry |
| CN112837987A (en) * | 2020-12-30 | 2021-05-25 | 四川红华实业有限公司 | Adjustable shielding box structure |
| CN112837987B (en) * | 2020-12-30 | 2023-04-14 | 四川红华实业有限公司 | Adjustable shielding box structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20180608 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |