Author/Authors :
Aoki, Toru Shizuoka University - Institute of Electronics, Japan , Aoki, Toru ANSeeN Inc., Japan , Miyake, Aki Shizuoka University - Facauty of Engineering, Japan , Miyake, Aki ANSeeN Inc., Japan , Nakano, Takayuki Shizuoka University - Facauty of Engineering, Japan , Koike, Akifumi Shizuoka University - Institute of Electronics, Japan , Koike, Akifumi ANSeeN Inc., Japan , Morii, Hisashi Shizuoka University - Facauty of Engineering, Japan , Mimura, Hidenori Shizuoka University - Institute of Electronics, Japan
Abstract :
The CdTe and GaN detector with a Gd converter have been developed and investigated as a neutron detector for neutron imaging. The fabricated Gd/CdTe detector with the 25 mm thick Gd was designed on the basis of simulation results of thermal neutron detection efficiency and spatial resolution. The Gd/CdTe detector shows the detection of neutron capture gamma ray emission in the ^155Gd(n, g)^156Gd, 157Gd(n, g)^158Gd and ^113Cd(n, g)^114Cd reactions and characteristic X-ray emissions due to conversion-electrons generated inside the Gd film. The observed efficient thermal neutron detection with the Gd/CdTe detector shows its promise in neutron radiography application. Moreover, a BGaN detector has also investigated to separate neutron signal from gamma-ray clearly.
Keywords :
detector , neutron , semiconductor , thermal
