Development of a tiny neutron probe with an optical fibre for BNCT.
We have developed a tiny neutron probe detector as a monitor of a thermal neutron flux for boron neutron capture therapy. The detector consists of an optical fibre and a small neutron probe. We have used a film-like ZnS(Ag) scintillator and a 6LiF neutron converter for the neutron probe. In order to improve the gamma-neutron discrimination ability, vacuum evaporation of 6LiF onto the ZnS(Ag) film has been done. In order to improve the neutron detection efficiency, we made use of a wavelength-shifting fibre as the probe material. The characteristics of the above two types of fibre probe detector have been evaluated experimentally.
Ito
Y
Y
National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan.
Katano
G
G
Harano
H
H
Matsumoto
T
T
Uritani
A
A
Kudo
K
K
Kobayashi
K
K
Yoshimoto
T
T
Sakurai
Y
Y
Kobayashi
T
T
Mori
C
C
D001822:Body Burden; D016754:Boron Neutron Capture Therapy / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation* / Q000379:methods; D005720:Gamma Rays; D006801:Humans; D008904:Miniaturization; D009502:Neutrons / Q000627:therapeutic use*; D011835:Radiation Protection / Q000295:instrumentation*; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D012062:Relative Biological Effectiveness; D015203:Reproducibility of Results; D018570:Risk Assessment / Q000379:methods; D012680:Sensitivity and Specificity; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000379:methods; D014159:Transducers