Title:
RADIATION DETECTING METHOD BY IONIZATION CHAMBER TYPE RADIATION DETECTOR
Document Type and Number:
Japanese Patent JP3693535
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a radiation detecting method by an ionization chamber type radiation detector with favorable detection energy resolution and detection time resolution of radiation by increasing a SN ratio and a rise gradient of a detection signal.
SOLUTION: In this ionization chamber type radiation detector, electrode planes of one pair of a negative electrode 2 and a positive electrode 3 arranged so as to sandwich a radiation detecting element 1 are each insulated and divided into a plurality of areas A1, B1, C1, D1, A2, B2, C2, and D2 for constituting a plurality of electrode plane pairs of the negative electrode 2 and the positive electrode 3, a bias voltage is applied to these plurality of electrode plane pairs, potential changes of each divided electrode plane generated by radiation incidence to the radiation detecting element 1 are respectively synthesized at each of a positive electrode side and a negative electrode side via an electronic device having rectification, and a difference of the synthesized positive and negative electrode potential changes E1 and E2 is used as a detection signal. By this, radiation is detected.
Inventors:
Masahiko Hirasawa
Mikio Yamamoto
Mikio Yamamoto
Application Number:
JP27271799A
Publication Date:
September 07, 2005
Filing Date:
September 27, 1999
Export Citation:
Assignee:
Japan Science and Technology Agency
National Institute of Radiological Sciences
National Institute of Radiological Sciences
International Classes:
H01J47/02; G01T1/161; G01T1/185; G01T1/24; (IPC1-7): G01T1/185; G01T1/161; G01T1/24; H01J47/02
Domestic Patent References:
| JP53105181A | ||||
| JP53105182A | ||||
| JP62148876A |
Other References:
平澤雅彦、山本幹男,半導体CdTeガンマ線検出素子の電極分割による検出時間分解能改善,1999年(平成11年)春季第46回応用物理学関係連合講演会講演予稿集,日本,(社)応用物理学会,1999年 3月28日,第1分冊,132頁
Attorney, Agent or Firm:
Toshio Nishizawa
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