CN102623290A - Light intensity detecting ionization chamber - Google Patents
Light intensity detecting ionization chamber Download PDFInfo
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- CN102623290A CN102623290A CN2012100587967A CN201210058796A CN102623290A CN 102623290 A CN102623290 A CN 102623290A CN 2012100587967 A CN2012100587967 A CN 2012100587967A CN 201210058796 A CN201210058796 A CN 201210058796A CN 102623290 A CN102623290 A CN 102623290A
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- ionization chamber
- chamber body
- ionization
- light intensity
- light
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Abstract
The invention discloses a light intensity detecting ionization chamber, which comprises an ionization chamber body, two adapter flanges and two transparent windows, wherein the two adapter flanges are respectively arranged on the two ends of the ionization chamber body along the axial direction of the ionization chamber body, the adapter flanges are connected with the ionization chamber body in a sealing way, the transparent windows are respectively arranged on the connecting end faces of the adapter flanges and the ionization chamber body, and each transparent window is provided with a transparent film. The light intensity detecting ionization chamber provided by the invention is not provided with any air gaps so as to eliminate the absorbing and radiating functions of the air gaps to the light beams, thus the accuracy of the experiments is enhanced; and moreover, the ionization chamber enhances the luminous flux of the light beams to samples, reduces the noise of detection signals, and also saves the space of a beam line station. In addition, the problem that a polyimide film of the window of the ionization chamber is ruined because of misoperation and the like can be avoided by adopting the ionization chamber provided by the invention.
Description
Technical field
The present invention relates to a kind of Optical devices, relate in particular to the light intensity ionization detection chamber of using on a kind of light beam line station.
Background technology
Synchrotron Radiation is a kind of equipment that can carry out multiple scientific research, is a kind of advanced person's laboratory facilities.Synchrotron Radiation is to be incorporated into experiment centre through light beam line to carry out scientific experiment research.Along with development of modern science and technology, the requirement to the luminous intensity measurement accuracy in experiment is also increasingly high.At present, all basically light beam line stations all need the intensity of experiments of measuring light beam, and the most frequently used luminous intensity measurement technology just is to use ionization chamber to carry out intensity monitor.Ionization chamber adopts the ionization chamber of general merchandiseization; It is a kind of autonomous device; Its sealed at both ends also is provided with logical light window; Window material uses Kapton film (Kapton is the trade name of the polyimide film material of du pont company production, and it has excellent chemical stability, heat-resisting quantity, robustness, resistance to wear, anti-flammability, electrical insulating property) usually, and ionization chamber inside is filled with ionized gas.
But; The light intensity of carrying out the ionization chamber of direct use general merchandiseization detects and has certain problem: ionization chamber is mounted on the light beam line in use; All there is one section air gap at its two ends, and air gap and sealed window material all can absorb light beam and produce scattering, thereby can have influence on the luminous flux and the experimental result of experiment; Especially for the experiment of weak signal, low-angle scattering of X-rays etc. for example.Because the light intensity that the air gap to the absorption of light beam, makes light beam arrive sample reduces, thereby in Data Processing in Experiment, have influence on result's accuracy.On the other hand, in experimental implementation, through regular meeting because misoperation etc. is former thereby destroy the Kapton film window of ionization chamber, thereby have influence on experiment.
Summary of the invention
The purpose of this invention is to provide a kind of light intensity ionization detection chamber, this ionization chamber should be eliminated the absorption problem of its air gap, two ends to light beam, thereby improves the luminous intensity measurement accuracy; In addition, this ionization chamber also should be eliminated because misoperation etc. are former thereby the problem of the polyimide film of destruction ionization chamber window.
According to the purpose of foregoing invention, the present invention proposes a kind of light intensity ionization detection chamber, it comprises:
One ionization chamber body;
Two switching flanges, it is located at the two ends of ionization chamber body respectively along the axial direction of ionization chamber body; Each transfer flange and ionization chamber body are tightly connected;
Two optical transmission windows are located at respectively on respectively transfer flange and the end face that the ionization chamber body is connected, are equipped with a light-transmissive film on each optical transmission window.This light-transmissive film can be a polyimide film, is connected with flange seal.
In the present technique scheme, light beam is injected the ionization chamber body from the polyimide film on the optical transmission window, thereby beam intensity is surveyed.Because the switching flange at ionization chamber body two ends can be connected with the light beam line seal for pipe joints respectively; Thereby eliminated the air gap at original ionization chamber two ends; Therefore the described ionization chamber of present technique scheme can be eliminated the influence that the air gap correlation is gone into light beam, has improved the accuracy of experiment.
In above-mentioned light intensity ionization detection chamber, also be connected with an admission line and an outlet pipe on the ionization chamber body respectively, on admission line and the outlet pipe respectively correspondence be provided with an intake valve and a vent valve.Because the ionization chamber body is by the switching flange seal; Inlet channel through having intake valve can be implemented in sealing gas and two kinds of patterns of flowing gas with the outlet passageway that has vent valve and carry out light intensity test: air valve is all closed, and is sealing gas in the ionization chamber body at this moment; Air valve is all opened, and be flowing gas this moment in the ionization chamber body.
Light intensity ionization detection of the present invention chamber has advantage:
(1) two ends of ionization chamber of the present invention do not have the air gap, have therefore eliminated this section air gap to the absorption of light beam generation and the effect of scattering, thereby have improved the accuracy of experiment;
(2) ionization chamber of the present invention has improved the luminous flux of light beam arrival sample, and has reduced the noise of detectable signal;
(3) ionization chamber of the present invention can also be practiced thrift the space at light beam line station;
(4) adopt ionization chamber of the present invention to avoid because misoperation etc. are former thereby the problem of the polyimide film of destruction ionization chamber window.
Description of drawings
Fig. 1 is the structural representation of light intensity ionization detection of the present invention chamber under a kind of execution mode.
Fig. 2 is the end view of Fig. 1.
Embodiment
To combine Figure of description and concrete embodiment that further detailed description is done in light intensity ionization detection of the present invention chamber below.
Fig. 1 has shown light intensity ionization detection of the present invention chamber structure in the present embodiment.Fig. 2 is the end view of Fig. 1.Like Fig. 1, shown in Figure 2, two switching flanges 2 are located at the two ends of ionization chamber body 1 respectively along the axial direction of ionization chamber body 1, and each flange 2 of transferring is tightly connected with ionization chamber body 1.Two optical transmission windows 3 are located at respectively on respectively transfer flange 2 and the end face that ionization chamber body 1 is connected; Be equipped with a polyimide film on each optical transmission window 3; This polyimide film adopts the Kapton film that du pont company is produced in the present embodiment, also can select to satisfy other film of printing opacity requirement.Also be connected with admission line 4 and outlet pipe 6 on the ionization chamber body 1 respectively, on admission line 4 and the outlet pipe 6 respectively correspondence be provided with intake valve 5 and vent valve 7.
Please continue to consult Fig. 1, Fig. 2, in the present embodiment, light beam is injected in the ionization chamber body 1 through the Kapton film on the optical transmission window 3, thereby beam intensity is surveyed.Because the switching flange 2 at ionization chamber body 1 two ends can be connected with the light beam line seal for pipe joints respectively; Thereby eliminated the air gap at original ionization chamber two ends; Therefore the described ionization chamber of present embodiment can be eliminated the influence that the air gap correlation is gone into light beam, has improved the accuracy of experiment.In addition; Because ionization chamber body 1 is by 2 sealings of switching flange; Inlet channel 4 through having intake valve 5 can be implemented in sealing gas and two kinds of patterns of flowing gas with the outlet passageway 6 that has vent valve 7 and carry out light intensity test: air valve 5,7 is all closed, and is sealing gas in the ionization chamber body 1 at this moment; Air valve 5,7 is all opened, and is flowing gas in the ionization chamber body 1 at this moment.
Be noted that above enumerate be merely specific embodiment of the present invention, obviously the invention is not restricted to above embodiment, many similar variations are arranged thereupon.If those skilled in the art all should belong to protection scope of the present invention from all distortion that content disclosed by the invention directly derives or associates.
Claims (3)
1. light intensity ionization detection chamber, it comprises an ionization chamber body, it is characterized in that, also comprises:
Two switching flanges, the axial direction of the said ionization chamber body in edge is located at the two ends of ionization chamber body respectively; Said flange and the ionization chamber body of respectively transferring is tightly connected;
Two optical transmission windows are located at respectively on said respectively transfer flange and the end face that the ionization chamber body is connected, are equipped with a light-transmissive film on said each optical transmission window.
2. light intensity ionization detection as claimed in claim 1 chamber is characterized in that: said light-transmissive film is a polyimide film.
3. according to claim 1 or claim 2 light intensity ionization detection chamber is characterized in that:
Also be connected with an admission line and an outlet pipe on the said ionization chamber body respectively, on said admission line and the outlet pipe respectively correspondence be provided with an intake valve and a vent valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210058796.7A CN102623290B (en) | 2012-03-07 | 2012-03-07 | Light intensity detecting ionization chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210058796.7A CN102623290B (en) | 2012-03-07 | 2012-03-07 | Light intensity detecting ionization chamber |
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| Publication Number | Publication Date |
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| CN102623290A true CN102623290A (en) | 2012-08-01 |
| CN102623290B CN102623290B (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210058796.7A Active CN102623290B (en) | 2012-03-07 | 2012-03-07 | Light intensity detecting ionization chamber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934285A (en) * | 2015-07-03 | 2015-09-23 | 中国计量科学研究院 | An ionization chamber measuring volume adjusting device |
| CN109459454A (en) * | 2018-09-11 | 2019-03-12 | 东莞中子科学中心 | A kind of charged particle detector for white light neutron source charged particle detection spectrometer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2249449Y (en) * | 1996-01-17 | 1997-03-12 | 中国科学院新疆物理研究所 | Window-adjustable double-wall ionization chamber |
| CN202487525U (en) * | 2012-03-07 | 2012-10-10 | 中国科学院上海应用物理研究所 | Light intensity detection ionization chamber |
-
2012
- 2012-03-07 CN CN201210058796.7A patent/CN102623290B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2249449Y (en) * | 1996-01-17 | 1997-03-12 | 中国科学院新疆物理研究所 | Window-adjustable double-wall ionization chamber |
| CN202487525U (en) * | 2012-03-07 | 2012-10-10 | 中国科学院上海应用物理研究所 | Light intensity detection ionization chamber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934285A (en) * | 2015-07-03 | 2015-09-23 | 中国计量科学研究院 | An ionization chamber measuring volume adjusting device |
| CN109459454A (en) * | 2018-09-11 | 2019-03-12 | 东莞中子科学中心 | A kind of charged particle detector for white light neutron source charged particle detection spectrometer |
| CN109459454B (en) * | 2018-09-11 | 2021-07-06 | 东莞中子科学中心 | White light neutron source charged particle detection spectrometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102623290B (en) | 2014-11-26 |
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