MEASUREMENT DEVICE

PROBLEM TO BE SOLVED: To provide a measurement device capable of suppressing errors in concentration measurement of boron contained in a liquid in an environment in which external neutron radiation is acting thereon.SOLUTION: A measurement device 1 measures boron concentration in a liquid L1 contain...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HAMAGUCHI RYOKICHI, HAYASHIBARA HIROFUMI, KAKINOKI KOICHI, TSUKAMOTO TAISUKE
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a measurement device capable of suppressing errors in concentration measurement of boron contained in a liquid in an environment in which external neutron radiation is acting thereon.SOLUTION: A measurement device 1 measures boron concentration in a liquid L1 containing a neutron source and boron. A measurement device 1 comprises a boron concentration measurement probe 32 having a thermal neutron detector, and a shield unit 31 made of a neutron-shielding material and configured to receive therein a second liquid L2 containing boron at least and to enclose therein the thermal neutron detector of the probe 32.SELECTED DRAWING: Figure 2 【課題】計測装置外からの中性子線が作用する環境下での液体中のホウ素の濃度の計測誤差を抑制することができる計測装置を提供すること。【解決手段】計測装置１は、中性子線源とホウ素とを含んだ液体Ｌ１中のホウ素の濃度を計測する。計測装置１は、熱中性子検出器を有するホウ素濃度測定用のプローブ３２と、中性子線を遮蔽する材料により構成され、かつ少なくともホウ素を含んだ第２の液体Ｌ２が内部に供給されるとともに、プローブ３２の熱中性子検出器を覆う遮蔽部３１とを備える。【選択図】図２