CN102623290B - Light intensity detecting ionization chamber - Google Patents
Light intensity detecting ionization chamber Download PDFInfo
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- CN102623290B CN102623290B CN201210058796.7A CN201210058796A CN102623290B CN 102623290 B CN102623290 B CN 102623290B CN 201210058796 A CN201210058796 A CN 201210058796A CN 102623290 B CN102623290 B CN 102623290B
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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 by light beam line, to be incorporated into experiment centre to carry out scientific experiment research.Along with the development of modern science and technology, also more and more higher to the requirement of luminous intensity measurement accuracy in experiment.At present, all light beam line stations all need the intensity of experiments of measuring light beam substantially, and the most frequently used luminous intensity measurement technology is used ionization chamber to carry out intensity monitor exactly.Ionization chamber adopts the ionization chamber of general merchandise, it is a kind of autonomous device, it is sealed at both ends and be provided with logical light window, window material is used Kapton film conventionally, and (Kapton is the trade name of the polyimide film material of du pont company's production, it has good chemical stability, heat-resisting quantity, robustness, resistance to wear, anti-flammability, electrical insulating property), ionization chamber inside is filled with ionized gas.
But, the light intensity of carrying out the ionization chamber of direct use general merchandise detects and has certain problem: ionization chamber is mounted on light beam line in use, all there is one section of air gap at its two ends, air gap and sealed window material all can absorb light beam and produce scattering, thereby can have influence on luminous flux and the experimental result of experiment, especially for the experiment of weak signal, such as low-angle scattering of X-rays etc.Due to the absorption of air gap to light beam, the light intensity that makes light beam arrive sample reduces, thereby in Data Processing in Experiment, has influence on the accuracy of result.On the other hand, in experimental implementation, often can be because misoperation etc. is former thereby destroy the Kapton film window of ionization chamber, thus have influence on experiment.
Summary of the invention
The object 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 luminous intensity measurement accuracy; In addition, this ionization chamber also should be eliminated because misoperation etc. is former thereby destroy the problem of the polyimide film of ionization chamber window.
According to the object of foregoing invention, the present invention proposes a kind of light intensity ionization detection chamber, it comprises:
One ionization chamber body;
Two adapter flanges, it is located at respectively the two ends of ionization chamber body along the axial direction of ionization chamber body; Each adapter flange and ionization chamber body are tightly connected;
Two optical transmission windows, are located at respectively on the end face that each adapter flange is connected with ionization chamber body, are equipped with a light-transmissive film on each optical transmission window.This light-transmissive film can be polyimide film, is connected with flange seal.
In the technical program, the polyimide film of light beam from optical transmission window injected ionization chamber body, thereby beam intensity is surveyed.Because the adapter flange at ionization chamber body two ends can be connected with light beam line seal for pipe joints respectively, thereby eliminated the air gap at original ionization chamber two ends, therefore the ionization chamber described in the technical program can be eliminated the impact that air gap correlation enters light beam, has improved the accuracy of experiment.
In above-mentioned light intensity ionization detection chamber, on ionization chamber body, be also connected with respectively an admission line and an outlet pipe, on admission line and outlet pipe, correspondence is provided with an intake valve and a vent valve respectively.Because ionization chamber body is sealed by adapter flange, by the inlet channel with intake valve with the outlet passageway of vent valve, can realize in sealing gas and two kinds of patterns of flowing gas and carry out light intensity test: air valve is all closed, and in ionization chamber body, is now sealing gas; Air valve is all opened, and in ionization chamber body, is now flowing gas.
Light intensity ionization detection of the present invention chamber has following advantages:
(1) two ends of ionization chamber of the present invention do not have air gap, have therefore eliminated this section of 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 saved the space at light beam line station;
(4) adopt ionization chamber of the present invention can also avoid because misoperation etc. is former thereby destroy the problem of the polyimide film of ionization chamber window.
Accompanying drawing explanation
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
Below in conjunction with Figure of description and specific embodiment, light intensity ionization detection of the present invention chamber is described in further detail.
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.As shown in Figure 1 and Figure 2, two adapter flanges 2 are located at respectively the two ends of ionization chamber body 1 along the axial direction of ionization chamber body 1, and each adapter flange 2 is tightly connected with ionization chamber body 1.Two optical transmission windows 3 are located at respectively on the end face that each adapter flange 2 is connected with ionization chamber body 1, on each optical transmission window 3, be equipped with a polyimide film, in the present embodiment, this polyimide film adopts the Kapton film that du pont company produces, and also can select to meet other film of printing opacity requirement.On ionization chamber body 1, be also connected with respectively admission line 4 and outlet pipe 6, on admission line 4 and outlet pipe 6, correspondence is provided with intake valve 5 and vent valve 7 respectively.
Please continue to refer to Fig. 1, Fig. 2, in the present embodiment, light beam is injected in ionization chamber body 1 by the Kapton film on optical transmission window 3, thereby beam intensity is surveyed.Because the adapter flange 2 at ionization chamber body 1 two ends can be connected with light beam line seal for pipe joints respectively, thereby eliminated the air gap at original ionization chamber two ends, therefore the ionization chamber described in the present embodiment can be eliminated the impact that air gap correlation enters light beam, has improved the accuracy of experiment.In addition, because ionization chamber body 1 is sealed by adapter flange 2, inlet channel 4 by with intake valve 5 with the outlet passageway 6 of vent valve 7, can realize in sealing gas and two kinds of patterns of flowing gas and carry out light intensity test: air valve 5,7 is all closed, and in ionization chamber body 1, is now sealing gas; Air valve 5,7 is all opened, and in ionization chamber body 1, is now flowing gas.
Be noted that above enumerate only for specific embodiments of the invention, obviously the invention is not restricted to above embodiment, have many similar variations thereupon.If all distortion that those skilled in the art directly derives or associates from content disclosed by the invention, all should belong to protection scope of the present invention.
Claims (3)
1. a light intensity ionization detection chamber, it comprises an ionization chamber body, it is characterized in that, also comprises:
Two adapter flanges, are located at respectively the two ends of ionization chamber body along the axial direction of described ionization chamber body; Described each adapter flange and ionization chamber body are tightly connected;
Two optical transmission windows, on the end face that described in being located at respectively, each adapter flange is connected with ionization chamber body, are equipped with a light-transmissive film on described each optical transmission window.
2. light intensity ionization detection as claimed in claim 1 chamber, is characterized in that: described light-transmissive film is polyimide film.
3. light intensity ionization detection as claimed in claim 1 or 2 chamber, is characterized in that:
On described ionization chamber body, be also connected with respectively an admission line and an outlet pipe, on described admission line and outlet pipe, correspondence is provided with an intake valve and a vent valve respectively.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102623290A CN102623290A (en) | 2012-08-01 |
| CN102623290B true CN102623290B (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210058796.7A Active CN102623290B (en) | 2012-03-07 | 2012-03-07 | Light intensity detecting ionization chamber |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934285B (en) * | 2015-07-03 | 2017-03-08 | 中国计量科学研究院 | Ionization chamber measures volume adjustment means |
| CN109459454B (en) * | 2018-09-11 | 2021-07-06 | 东莞中子科学中心 | 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 |
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| Publication number | Publication date |
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| CN102623290A (en) | 2012-08-01 |
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