Study on scintillation properties of rare earth (Pr, Nd and Tm) activated Lu2SiO5

Daisuke Totsuka, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Akira Yoshikawa

研究成果: Conference contribution

抄録

Rare earth (Pr, Nd and Tm) doped Lu2SiO5 (LSO) single crystals were grown by the micro-pulling down (μ-PD) method. The concentrations were added 0.05, 0.10, and 0.25% of Pr, 0.10, 0.25, and 0.50% of Nd, 0.1, 1, 10, and 100% of Tm with respect to Lu, respectively. Optical and radiation measurements were carried out on the samples. Pr samples have a transparency of about 80% in visible wavelength range in all crystals. Intense absorptions related with Pr3+ 4f-5d transitions were observed peaking around 230, 255 nm, and weak absorptions due to 4f-4f transitions were detected around 450 nm. In radio luminescence spectra, emissions due to Pr3+ 5d-4f transition were observed peaking around 275 nm, 310 nm, and emissions due to 4f-4f transition were observed peaking around 500 nm. By pulse height analysis with gamma-ray excitation using 137Cs, Pr 0.1% doped sample showed the highest light yield of 2,800ph/MeV. In decay time measurements using different excitation energy (photo-luminescence, X- and gamma-ray), two different processes of 5d-4f emissions were found. Fast decay component corresponds to direct excitation of Pr3+ (4-6 ns) and slower component (25 ns) reflects the energy migration process from the host lattice to the emission center.

本文言語English
ホスト出版物のタイトルIEEE Nuclear Science Symposuim and Medical Imaging Conference, NSS/MIC 2010
ページ1292-1295
ページ数4
DOI
出版ステータスPublished - 2010
イベント2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010 - Knoxville, TN, United States
継続期間: 2010 10 302010 11 6

出版物シリーズ

名前IEEE Nuclear Science Symposium Conference Record
ISSN(印刷版)1095-7863

Other

Other2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010
国/地域United States
CityKnoxville, TN
Period10/10/3010/11/6

ASJC Scopus subject areas

  • 放射線
  • 核物理学および高エネルギー物理学
  • 放射線学、核医学およびイメージング

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