Thallium magnesium chloride: A high light yield, large effective atomic number, intrinsically activated crystalline scintillator for X-ray and gamma-ray detection

Yutaka Fujimoto, Masanori Koshimizu, Takayuki Yanagida, Go Okada, Keiichiro Saeki, Keisuke Asai

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

We report the luminescence and the scintillation properties of a newly developed thallium magnesium chloride (TlMgCl3) crystal. The crystal sample can be easily fabricated from the melt using the Bridgman method. The photoluminescence band appeared near the wavelength of 405nm under excitation at 230nm. An X-ray-induced scintillation spectrum showed an intense emission band near the wavelength of 405nm. The decay time constant was estimated to be approximately 60 ns (>25%) and 350 ns (>75%) using a bi-exponential fitting. The scintillation light yield reached 46,000 photons/MeV with an energy resolution of 5% at 662 keV.

Original languageEnglish
Article number090301
JournalJapanese journal of applied physics
Volume55
Issue number9
DOIs
Publication statusPublished - 2016 Sep

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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