APPARATUS AND METHOD FOR MEASURING NEUTRONS

PROBLEM TO BE SOLVED: To enable on-line measurement of neutrons while minimizing an effect thereof on a neutron beam.SOLUTION: According to an embodiment, a neutron measurement apparatus 100 includes: at least one container 11 containing a neutron capturing gas 13 that captures neutrons and generates radiation and a scintillator gas 14 that generates light through interaction with the radiation; a light collecting member 12 that is attached to an opening formed as part of the container 11 to create a hermetically sealed space 18 together with the container 11 and guide the light generated by the scintillator gas 14; and a photo-detection unit 20 that is provided outside the light collecting member 12 to detect the light from the light collecting member 12.SELECTED DRAWING: Figure 2 【課題】中性子ビームへの影響を抑えつつ、中性子をオンラインで測定可能とする。【解決手段】実施形態によれば、中性子測定装置１００は、中性子を捕獲して放射線を発生する中性子捕獲ガス１３と、放射線との相互作用により光を発生するシンチレータガス１４とを内包する少なくとも１つの容器１１と、この容器１１の一部に形成された開口に取付けられて容器１１とともに密閉空間１８を形成し、シンチレータガス１４が発生した光を導く集光部材１２と、集光部材１２の外部に設けられて集光部材１２からの光を検出する光検出部２０を有する。【選択図】図２