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Found results for
 patents
1.
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Gas electron multiplier and manufacturing method for gas electron multiplication foil used for same as well as radiation detector using gas electron multiplier
| Application Number |
12224228 |
| Grant Number |
07994483 |
| Status |
In Force |
| Filing Date |
2007-03-01 |
| First Publication Date |
2009-04-02 |
| Grant Date |
2011-08-09 |
| Owner |
- Riken (Japan)
- The University of Tokyo (Japan)
- Scienergy Co., Ltd. (Japan)
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| Inventor |
- Tamagawa, Toru
- Koshimuta, Satoshi
- Hamagaki, Hideki
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Abstract
To attain objects to reduce the spread of electrons as compared with a conventional one without degrading the multiplication factor of electrons; to provide a large electron multiplication factor; and to improve positional resolution, there is provided a gas electron multiplier using interaction between radiation and gas through photoelectric effects including: a chamber filled with gas and a single gas electron multiplication foil arranged in the chamber wherein the gas electron multiplication foil is made of a plate-like multilayer body composed by having a plate-like insulation layer made of a macromolecular polymer material having a thickness of around 100 μm to 300 μm and flat metal layers overlaid on both surfaces of the insulation layer, and the plate-like multilayer body is provided with a through-hole structure.
IPC Classes ?
- G01T 1/185 - Measuring radiation intensity with ionisation-chamber arrangements
- G01T 1/205 - Measuring radiation intensity with scintillation detectors the detector being a gas
- H01J 47/00 - Tubes for determining the presence, intensity, density or energy of radiation or particles
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2.
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GAS ELECTRONIC AMPLIFIER AND METHOD FOR MANUFACTURING GAS ELECTRONIC AMPLIFICATION FOIL AND A RADIATION DETECTOR USING GAS ELECTRONIC AMPLIFIER
| Application Number |
JP2007053875 |
| Publication Number |
2007/100029 |
| Status |
In Force |
| Filing Date |
2007-03-01 |
| Publication Date |
2007-09-07 |
| Owner |
- RIKEN (Japan)
- The University of Tokyo (Japan)
- SCIENERGY Co., Ltd. (Japan)
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| Inventor |
- Tamagawa, Toru
- Koshimuta, Satoshi
- Hamagaki, Hideki
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Abstract
A gas electronic amplifier employing interaction by photoelectric effect of radiation and gas in which spread of electrons can be reduced as compared with before without lowering the amplification factor of electrons, and positional resolution is enhanced while a high electron amplification factor is provided. The gas electronic amplifier comprises a chamber (102) filled with gas, and a single gas electron amplification foil (12) arranged in the chamber, wherein the gas electron amplification foil is composed of a planar multilayer body having a planar insulation layer (12a) of a high molecular polymer material about 100-300 &mgr;m in thickness, and planar metal layers (12b, 12c) covering the opposite sides of the insulation layer, and a through hole structure is provided in the planar multilayer body.
IPC Classes ?
- H01J 43/20 - Dynodes consisting of sheet material, e.g. plane, bent
- G01T 1/18 - Measuring radiation intensity with counting-tube arrangements, e.g. with Geiger counters
- H01J 9/02 - Manufacture of electrodes or electrode systems
- H01J 47/06 - Proportional counter tubes
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