Demonstration of polarization behavior of TlBr x-ray imager with silver electrodes

Katsuyuk Takagi, Kohei Toyoda, Hiroki Kase, Toshiyuki Takagi, Kento Tabata, Tsuyoshi Terao, Hisashi Morii, Akifumi Koike, Toru Aoki, Mitsuhiro Nogami, Keitaro Hitomi

研究成果: Conference contribution

抄録

This study demonstrates a result of polarization effect of an X-ray imager that uses TlBr detectors with silver small electrodes. Although TlBr detectors are suitable for X-ray imaging applications because of the associated large attenuation coefficients and direct conversion behavior, realizing a flat-panel detector with TlBr involves developing processes. The demonstrated imager is constructed utilizing a combination of existing technologies; it comprises a plate electrode containing thallium metal to suppress the polarization phenomenon, pixelated silver electrodes with 80 μm pitch, and a photon-counting-Type readout integrated circuit that can work in the hole as well as electron collection modes. As a result, it was reconfirmed that the polarization phenomenon is a serious problem for small electrodes as well as for large electrodes. In addition, the polarization could have accelerated by high X-rays flux. This result can motivate the development of polarization-Tolerant small electrodes for TlBr detectors.

本文言語English
ホスト出版物のタイトルHard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII
編集者Nerine J. Cherepy, Michael Fiederle, Ralph B. James
出版社SPIE
ISBN(電子版)9781510645141
DOI
出版ステータスPublished - 2021
イベントHard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII 2021 - San Diego, United States
継続期間: 2021 8月 12021 8月 5

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
11838
ISSN(印刷版)0277-786X
ISSN(電子版)1996-756X

Conference

ConferenceHard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII 2021
国/地域United States
CitySan Diego
Period21/8/121/8/5

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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