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Potential of GAGG:Ce scintillation crystals for synchrotron X-Ray microimaging
임재홍,박경진,김흔덕,소정호,김종현 한국물리학회 2019 Current Applied Physics Vol.19 No.3
We examined the use of cerium-doped gadolinium aluminum gallium garnet (GAGG:Ce) as a material for scintillation screens in synchrotron X-ray radiography (SXR). Highlighted for gamma-ray detection, GAGG:Ce is also an attractive material for SXR because of its high X-ray stopping power and the high light yield at around 530 nm. A thin and transparent screen prepared from our grown ingot of GAGG:Ce was compared with commonly used scintillators of CdWO4 and YAG:Ce in terms of image quality under monochromatic X-ray illumination. Micron spatial resolutions were achieved with comparable image quality, suggesting that a single crystal of GAGG:Ce is competent scintillation material for SXR.
여인성,주경광,소선향,송숙형,김홍주,소정호,박강순,마경주,전은주,Jin Yu Kim,김영덕,Jason Lee,이정연,선광민 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.64 No.3
We propose a new experiment on the site of the Korea Atomic Energy Research Institute (KAERI)located at Daejeon, Korea. The Hanaro short baseline (SBL) nuclear reactor with a thermal poweroutput 30 MW is used to investigate a reactor neutrino anomaly. A Hanaro SBL prototype detectorhaving a 60-l volume has been constructed 6 m away from the reactor core. A gadolinium (Gd)-loaded liquid scintillator (LS) is used as an active material to trigger events. The selection of theLS is guided by physical and technical requirements, as well as safety considerations. A linearalkyl benzene (LAB) is used as a base solvent of the Hanaro SBL prototype detector. Three g/lof PPO and 30 mg/l of bis-MSB are dissolved to formulate the LAB-based LS. Then, a 0.5%gadolinium (Gd) complex with carboxylic acid is loaded into the LAB-based LS by using the liquidliquidextraction method. In this paper, we will summarize all the characteristics of the Gd-loadedLAB-based LS for the Hanaro prototype detector.