Significantly different pulse shapes for γ- and α-rays in Gd 3 Al 2 Ga 3 O 12 :Ce 3+ scintillating crystals
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment(2012)
摘要
We have found that scintillation in Gd3Al2Ga3O12 (GAGG):Ce3+ garnet single crystals has significantly different pulse shapes for 0.662MeV γ- and 5.47MeV α-rays. The decay and rise times for γ-rays are smaller by 50% and threefold, respectively, than those for α-rays. Because the GAGG:Ce is a dense, efficient and fast-response scintillator and because it can be grown in large-size single crystals, it should be a promising unified target and a detector material in the study of neutrinoless double beta decay of 160Gd through the use of pulse shape discrimination between the β-ray signals and the α-ray-induced backgrounds.
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关键词
ν-Less double beta decay,Gd3Al2Ga3O12:Ce,Scintillators,Pulse shape discrimination
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