NEUTRON SPECTRUM MEASURING DEVICE AND NEUTRON SPECTRUM MEASURING METHOD

To measure a neutron spectrum easily.SOLUTION: A measurement unit 12 includes a converter unit 20 having a plurality of types of metal foil converters 21-25 each containing a different type of metal element to be radioactivated in response to energy of a neutron beam to be measured, and a plurality...

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Bibliographic Details
Main Authors UEMOTO RYUJI, SONODA YUKIO, UEMATSU MIKIO, UNO HIROYUKI, NITTO KOICHI
Format Patent
LanguageEnglish
Japanese
Published 13.02.2020
Subjects
MEASUREMENT OF NUCLEAR OR X-RADIATION
MEASURING
PHYSICS
TESTING
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Summary:To measure a neutron spectrum easily.SOLUTION: A measurement unit 12 includes a converter unit 20 having a plurality of types of metal foil converters 21-25 each containing a different type of metal element to be radioactivated in response to energy of a neutron beam to be measured, and a plurality of types of metal filters 31-35 each containing the same type of metal element as corresponding metal foil converters 21-25, and is provided with a filter unit 30 disposed on a neutron beam incident side of the converter unit 20. The plurality of types of metal foil converters 21-25 are arranged at positions that at least partially overlap corresponding metal filters 31-35 in an incident direction of a neutron beam NB.SELECTED DRAWING: Figure 14 【課題】中性子スペクトルを簡便に計測する。【解決手段】測定ユニット１２は、測定対象とする中性子線のエネルギーに反応して放射化する異なる種類の金属元素をそれぞれが含有する複数種の金属箔コンバータ２１〜２５を有するコンバータユニット２０と、対応する金属箔コンバータ２１〜２５と同一種類の金属元素をそれぞれが含有する複数種の金属フィルタ３１〜３５を有し、コンバータユニット２０の中性子線の入射側に配置されるフィルタユニット３０と、を備える。複数種の金属箔コンバータ２１〜２５は、対応する金属フィルタ３１〜３５と中性子線ＮＢの入射方向に少なくとも部分的に重なる位置に配置される。【選択図】図１４
Bibliography:Application Number: JP20180147637