TY - JOUR
T1 - Analysis of linear energy transfer effects on the scintillation properties of Bi4Ge3O12 crystals
AU - Koshimizu, Masanori
AU - Kurashima, Satoshi
AU - Kimura, Atsushi
AU - Taguchi, Mitsumasa
AU - Yanagida, Takayuki
AU - Fujimoto, Yutaka
AU - Asai, Keisuke
N1 - Funding Information:
This work is supported by the Inter-University Program for the Joint Use of JAEA Facilities. This work is partially supported by the Cooperative Research Project of the Research Institute of Electronics, Shizuoka University.
Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/10/15
Y1 - 2017/10/15
N2 - We analyzed the linear energy transfer (LET; energy deposited onto the target per unit length) effects on the scintillation properties of Bi4Ge3O12 (BGO) with an emphasis on the dynamical aspect. We irradiated BGO with 20 MeV H±, 50 MeV He±, and 220 MeV C5+. We observed that the rise and the decay of the scintillation temporal profiles are faster at higher LET. The faster decay at higher LET is attributed to the competition between the radiative transition of self-trapped excitons (STEs) localized at Bi3+ ions and the quenching caused by the interaction between STEs. The faster rise can be explained in terms of the competition between the quenching caused by the interaction between excited states and the formation of the STEs.
AB - We analyzed the linear energy transfer (LET; energy deposited onto the target per unit length) effects on the scintillation properties of Bi4Ge3O12 (BGO) with an emphasis on the dynamical aspect. We irradiated BGO with 20 MeV H±, 50 MeV He±, and 220 MeV C5+. We observed that the rise and the decay of the scintillation temporal profiles are faster at higher LET. The faster decay at higher LET is attributed to the competition between the radiative transition of self-trapped excitons (STEs) localized at Bi3+ ions and the quenching caused by the interaction between STEs. The faster rise can be explained in terms of the competition between the quenching caused by the interaction between excited states and the formation of the STEs.
KW - BGO
KW - Excitation density
KW - Linear energy transfer
KW - Quench
KW - Scintillator
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U2 - 10.1016/j.nimb.2017.04.010
DO - 10.1016/j.nimb.2017.04.010
M3 - Article
AN - SCOPUS:85017336516
SN - 0168-583X
VL - 409
SP - 19
EP - 22
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
ER -