NEUTRON SPECTRUM MEASURING APPARATUS AND NEUTRON SPECTRUM MEASURING METHOD

To easily measure a neutron spectrum.SOLUTION: A neutron spectrum measuring apparatus comprises: a converter unit 20 having plural kinds of foil converters 21-25 each containing an element with different atomic number; plural kinds of filters 31-35 each containing the same element as corresponding k...

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Bibliographic Details
Main Authors UEMOTO RYUJI, SONODA YUKIO, UNO HIROYUKI, NITTO KOICHI
Format Patent
LanguageEnglish
Japanese
Published 05.08.2021
Subjects
GAMMA RAY OR X-RAY MICROSCOPES
IRRADIATION DEVICES
MEASUREMENT OF NUCLEAR OR X-RADIATION
MEASURING
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
PHYSICS
TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOTOTHERWISE PROVIDED FOR
TESTING
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Summary:To easily measure a neutron spectrum.SOLUTION: A neutron spectrum measuring apparatus comprises: a converter unit 20 having plural kinds of foil converters 21-25 each containing an element with different atomic number; plural kinds of filters 31-35 each containing the same element as corresponding kind of foil converter; and a filter unit 30 disposed in front of the converter unit 20 when viewed from an incident direction of neutron beams NB. The plural kinds of filters 31-35 are arranged so as not to overlap each other in plan view from the incident direction of the neutron beams NB. The plural kinds of foil converters 21-25 are arranged so as to at least partially overlap the corresponding kind of filter in the incident direction of the neutron beams NB.SELECTED DRAWING: Figure 13 【課題】中性子スペクトルを簡便に計測する。【解決手段】中性子スペクトル測定装置は、それぞれが原子番号の異なる元素を含有する複数種類の箔コンバータ２１〜２５を有するコンバータユニット２０と、対応する種類の箔コンバータと同一の元素をそれぞれが含有する複数種類のフィルタ３１〜３５を有し、中性子線ＮＢの入射方向から見てコンバータユニット２０の手前側に配置されるフィルタユニット３０と、を備える。複数種類のフィルタ３１〜３５は、中性子線ＮＢの入射方向から見た平面視において互いに重ならないように配置され、複数種類の箔コンバータ２１〜２５は、対応する種類のフィルタと中性子線ＮＢの入射方向に少なくとも部分的に重なるように配置される。【選択図】図１３
Bibliography:Application Number: JP20200006937