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The role of gadolinium in the scintillation processes of cerium-doped gadolinium oxyorthosilicate

Authors
Journal
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
0168-9002
Publisher
Elsevier
Publication Date
Volume
346
Issue
3
Identifiers
DOI: 10.1016/0168-9002(94)90586-x

Abstract

Abstract The origins of two decay constants in the scintillation decay of cerium-doped gadolinium oxyorthosilicate (Gd 2(SiO 4)O:Ce) are investigated using UV light. We find that build-ups and long decay components observed with gamma-ray excitation are due to non-radiative energy transfer from Gd to Ce. The transfer rate from Gd to Ce increases as the Ce concentration increases. The gamma-ray excited decay curves of GSO are composed of prompt Ce emission and delayed Ce emission (transfer of energy through Gd), as observed by UV excitation.

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