X-RAY DETECTION DEVICE

• Main Authors: MAEDA KOJI, KUMEDA TOMOAKI
• Format: Patent
• Language: English; Japanese
• Published: 19.11.2015
• Subjects: ADHESIVES; CHEMISTRY; DYES; GAMMA RAY OR X-RAY MICROSCOPES; IRRADIATION DEVICES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; PAINTS; PHYSICS; POLISHES; TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOTOTHERWISE PROVIDED FOR

PROBLEM TO BE SOLVED: To perform sufficiently sensitive X-ray detection with a low cost configuration.SOLUTION: An X-ray detection device (1) comprises: a phosphor (22) containing a trivalent samarium ion that is reduced from trivalent to divalent when irradiated with X-rays; a photoexcitation emission light source (11) irradiating the phosphor (22) with a laser beam (11a) of a first wavelength for exciting the samarium; a Si photodetector (12) receiving light generated from the divalent samarium photoexcited by the laser beam (11a) and having a second wavelength longer than the first wavelength; and detection means (C3) for detecting irradiation of X-rays based on the light received by the Si photodetector (12). 【課題】低コストな構成で感度の十分なＸ線検出を行うこと。【解決手段】Ｘ線照射時に３価から２価に還元される３価のサマリウムのイオンを含む蛍光体（２２）と、蛍光体（２２）に対して、サマリウムを励起させる第１の波長のレーザー光（１１ａ）を照射する光励起発光用の光源（１１）と、レーザー光（１１ａ）により光励起された２価のサマリウムに起因し且つ前記第１の波長よりも波長の長い第２の波長の光を受光するＳｉ光検出器（１２）と、Ｓｉ光検出器（１２）が受光した光に基づいて、Ｘ線の照射を検出する検出手段（Ｃ３）と、を備えたＸ線検出装置（１）。【選択図】図２