TY - JOUR
T1 - Effect of linear energy transfer on the scintillation properties of Ce-doped Ca3B2O6 crystals
AU - Koshimizu, Masanori
AU - Kimura, Atsushi
AU - Kurashima, Satoshi
AU - Taguchi, Mitsumasa
AU - Yanagida, Takayuki
AU - Fujimoto, Yutaka
AU - Asai, Keisuke
N1 - Funding Information:
This research was supported by a Grant-in-Aid for Scientific Research (A) (No. 18H03890, 2018–2021), a Grant-in-Aid for Scientific Research (B) (No. 18H01911, 2018–2020), and the Inter-University Program for the Joint Use of QST Facilities. A part of this research is based on the Cooperative Research Project of Research Center for Biomedical Engineering, Ministry of Education, Culture, Sports, Science and Technology .
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/5/15
Y1 - 2020/5/15
N2 - The effect of linear energy transfer (LET) on the scintillation properties of Ce-doped Ca3B2O6 crystals was analyzed. The rise in the scintillation temporal profile was significantly slower for 20 MeV H+ irradiation, which had the lowest LET among the experimental conditions considered in this study. Observations of the scintillation temporal profiles at different wavelengths revealed that a fast component in the ultraviolet (UV) region, which is attributed to localized centers such as defects, contributes to the shoulder structure at the rise. The relative contribution of the fast and Ce3+ emission components depends on the LET, which results in LET-dependent scintillation temporal profiles. The LET effect on the relative contribution of the two components is explained in terms of the competition between the energy transfer from the host to Ce3+ ions or the localized centers, and the quenching owing to the interaction between excited states prior to the energy transfer.
AB - The effect of linear energy transfer (LET) on the scintillation properties of Ce-doped Ca3B2O6 crystals was analyzed. The rise in the scintillation temporal profile was significantly slower for 20 MeV H+ irradiation, which had the lowest LET among the experimental conditions considered in this study. Observations of the scintillation temporal profiles at different wavelengths revealed that a fast component in the ultraviolet (UV) region, which is attributed to localized centers such as defects, contributes to the shoulder structure at the rise. The relative contribution of the fast and Ce3+ emission components depends on the LET, which results in LET-dependent scintillation temporal profiles. The LET effect on the relative contribution of the two components is explained in terms of the competition between the energy transfer from the host to Ce3+ ions or the localized centers, and the quenching owing to the interaction between excited states prior to the energy transfer.
KW - Energy transfer
KW - Ion beam
KW - Linear energy transfer
KW - Quenching
KW - Scintillator
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U2 - 10.1016/j.nimb.2020.03.022
DO - 10.1016/j.nimb.2020.03.022
M3 - Article
AN - SCOPUS:85082673843
SN - 0168-583X
VL - 471
SP - 59
EP - 62
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 -