@inproceedings{4e92e9e6e1a744e0b366adb005c93bc1,
title = "Demonstration of polarization behavior of TlBr x-ray imager with silver electrodes",
abstract = "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. ",
keywords = "Semiconductor radiation detector, Thallium bromide, X-ray imaging",
author = "Katsuyuk Takagi and Kohei Toyoda and Hiroki Kase and Toshiyuki Takagi and Kento Tabata and Tsuyoshi Terao and Hisashi Morii and Akifumi Koike and Toru Aoki and Mitsuhiro Nogami and Keitaro Hitomi",
note = "Funding Information: This research was partly supported by AMED under Grant Number JP19hm0102034 and the Cooperative Research Projects of Research Center for Biomedical Engineering, Japan. Publisher Copyright: {\textcopyright} COPYRIGHT SPIE.; Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII 2021 ; Conference date: 01-08-2021 Through 05-08-2021",
year = "2021",
doi = "10.1117/12.2596374",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Cherepy, {Nerine J.} and Michael Fiederle and James, {Ralph B.}",
booktitle = "Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII",
}