Vol 17, No 3 (2013) > Articles >

Semiconductor Thermal Neutron Detector

Toru Aoki 1 , Aki Miyake 2 , Takayuki Nakano 2 , Akifumi Koike 3 , Hisashi Morii 2 , Hidenori Mimura 1

Affiliations:

  1. Research Institute of Electronics, Shizuoka University, Hamamatsu, Shizuoka 432-8011, Japan
  2. Facauty of Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8011, Japan
  3. ANSeeN Inc., 3-5-1 Jyohoku, Naka-ku, Hamamatsu, Shizuoka 432-8561, 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
Published at: Vol 17, No 3 (2013) pages: 133-137
DOI:

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