Effects of Ga content on optical and scintillation properties in Ce3+doped YGd2(Al,Ga)5O12 scintillators

Warut Chewpraditkul, Nakarin Pattanaboonmee, Kriangkrai Wantong, Weerapong Chewpraditkul, Vladimir Babin, Martin Nikl, Kei Kamada, Akira Yoshikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The optical and scintillation properties of Ce3+-doped YGd2(Al,Ga)5O12 single crystal scintillators were investigated. The Ce3+ 5d-4f emission was blue-shifted with increasing Ga content due to the decrease of the crystal field strength. Temperature dependence of the photoluminescence decay times was measured and the thermal activation energy for the luminescence quenching was calculated. Light yield (LY) and its dependence on an integration time were measured under γ-ray excitation. The fast component content in the scintillation response increases with increasing Ga content. The YGd2Al2Ga3O12:Ce sample showed a high LY of 38,000 photons/MeV. The decrease of LY value observed for a YGd2Al1Ga4O12:Ce sample is mainly due to the thermal ionization of the 5d1 excited state of the Ce3+ emission center to the conduction band.

Original languageEnglish
Title of host publicationApplied Physics and Material Applications II
EditorsWitthaya Mekhum, Anat Thapinta, Prungsak Attaphut, Narong Sangwaranatee, Pichet Limsuwan, Hong Joo Kim, Mitra Djamal, Jakrapong Kaewkhao, Jakrapong Kaewkhao
PublisherTrans Tech Publications Ltd
Pages552-555
Number of pages4
ISBN (Print)9783038356837
DOIs
Publication statusPublished - 2016
Event2nd International Conference on Applied Physics and Material Applications, ICAPMA 2015 - Pattaya, Thailand
Duration: 2015 May 282015 May 30

Publication series

NameKey Engineering Materials
Volume675-676
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other2nd International Conference on Applied Physics and Material Applications, ICAPMA 2015
CountryThailand
CityPattaya
Period15/5/2815/5/30

Keywords

  • Light yield
  • Luminescence
  • Scintillation
  • YGd(Al,Ga)O:Ce

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Effects of Ga content on optical and scintillation properties in Ce<sup>3+</sup>doped YGd<sub>2</sub>(Al,Ga)<sub>5</sub>O<sub>12</sub> scintillators'. Together they form a unique fingerprint.

Cite this