放射線物理・放射線計測　

Radiation Physics, Radiation Measurements

　大学院修士・博士後期課程で，原子核分裂の時に放出される中性子数の測定を行った．これには，薄膜シンチレーション検出器，Si表面障壁型検出器を用いたが，私は原子核物理よりも放射線検出器に興味を持った．

　以来，Si表面障壁型検出器の応答特性，超伝導体検出器，InSb化合物半導体検出器，Si-Si接合，エネルギー分解X線コンピュータ断層撮影用transXend検出器，低雑音電流敏感型前置増幅器VIECの研究を行ってきた．

　現在は，京都大学名誉教授，日本原子力研究開発機構・客員研究員，日本原子力学会英文誌・特別編集委員．

   In the days of master and doctor courses at Kyoto University, I was working on the measurement of numbers of neutrons emitted by nuclear fission process.  For this measurement, I used thin film scintillation detectors and Si surface barrier detectors.  These detectors fascinated me. 

   Since then, I studied the response of Si surface barrier detectors, super-conducting detectors, InSb compound semiconductor detector, Si-Si bonding, a transXend detector for energy-resolved X-ray computed tomography, and a low-noise current-sensitive preamplifier VIEC.

  Now, I am an Emeritus Professor of Kyoto University, a visiting scientist at the Japan Atomic Energy Agency, and an Exective Editor of the Journal of Nuclear Science and Technology.