Position sensitive scintillation detector for γ-rays using a GSO crystal

Yasuyoshi Nagai, Toshio Hyodo

Research output: Contribution to journalLetterpeer-review

12 Citations (Scopus)


We report the development of a γ-ray imager using a 5 mm thick, 50 mm diameter Gd2SiO5 (GSO) crystal coupled to a 2D position-sensitive photomultiplier tube (Hamamatsu R2486). A considerable improvement in the position linearity and resolution was achieved upon placing around the GSO scintillator a glass ring which has the same thickness and the same index of refraction as the GSO crystal. A position resolution of 2.2 mm FWHM was obtained at 511 keV.

Original languageEnglish
Pages (from-to)285-288
Number of pages4
JournalNuclear Inst. and Methods in Physics Research, A
Issue number1
Publication statusPublished - 1994 Sep 15
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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