Gamma-ray responses of Pr:LuYAP and Pr:YAP scintillators

Takayuki Yanagida, Kei Kamada, Yuui Yokota, Yutaka Fujimoto, Shuji Maeo, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Pr3+ doped LuYAP crystal was grown by the Czochralski method with 1 inch diameter and 10 cm length. In order to compare scintillation characteristics, Pr 3+ doped YAP crystal was also grown by the micro-pulling-down method. Absorption spectra of them were measured and Pr 3+ 4f → 4f5d and 4f2 → 4f absorption lines were observed at 230,470, and 600 nm, respectively. In photoluminescence measurements, here excited by Xe lamp pulse of wavelength around 223,250 and 280 nm emission lines due to Pr3+ 4f5d → 4f transition were detected. When coupled with PMT R7600 and irradiated by gamma-rays, gamma-ray induced light yields were estimated as 1900 ph/MeV for Pr:LuYAP and 5600 ph/MeV for Pr:YAP. In both crystals, light yield non-proportionality and energy resolution were investigated by individual lines in the gamma-ray energy range from 59.5 keV to 1408 keV. The gamma-ray excited decay time constants turned out to be 9.8 ns for Pr:LuYAP and 9.0 ns for Pr:YAP.

Original languageEnglish
Article number5485090
Pages (from-to)1316-1319
Number of pages4
JournalIEEE Transactions on Nuclear Science
Issue number3 PART 2
Publication statusPublished - 2010 Jun


  • Gamma-ray detectors
  • Praseodymium
  • Radiation detectors
  • Scintillation detectors

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering


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