Title:
減速型中性子スペクトル測定器の減速材構造
Document Type and Number:
Japanese Patent JP4670068
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a moderation type instrument for measuring neutron spectrum where a position-sensitive type thermal neutron detector is located in a neutron moderator and which measures the distribution of the energy of neutrons in a radiation field where neutrons that have various levels of energy exist. SOLUTION: The structure of a moderator in the measuring instrument is characterized in that the instrument can measure the position where neutrons are converted into thermal neutrons with high sensitivity by replacing a portion of the moderator on the surface side where the neutrons are incident, with a material whose hydrogen density is low and which has low performance of neutron moderation to enlarge the difference in the positions where the neutrons in a low-energy range are converted into the thermal neutrons and further, by placing a thermal neutron absorber in the moderator to restrain the thermal neutrons from diffusing.
Inventors:
Yoshihiko Tanimura
Jun Saegusa
Yoshizawa Michio
Makoto Yoshida
Jun Saegusa
Yoshizawa Michio
Makoto Yoshida
Application Number:
JP2001253812A
Publication Date:
April 13, 2011
Filing Date:
August 24, 2001
Export Citation:
Assignee:
Japan Atomic Energy Agency
International Classes:
G21C17/12; G01T3/00
Domestic Patent References:
| JP2082188A | ||||
| JP61269089A | ||||
| JP61269090A | ||||
| JP9021881A | ||||
| JP4020893A | ||||
| JP2001349951A |
Attorney, Agent or Firm:
Kazuo Shamoto
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shurin Sakurai
Fujihiro Kanda
Hideo Tanaka
Shinya Hosokawa
Norihiro Fukasawa
Koji Hirayama
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shurin Sakurai
Fujihiro Kanda
Hideo Tanaka
Shinya Hosokawa
Norihiro Fukasawa
Koji Hirayama