Gamma-Ray Thermoluminescence in Rare-Earth-Activated Y_2O_3 Phosphors

スポンサーリンク

概要

• 論文の詳細を見る

• The gamma-ray- and photo-induced thermoluminescences in rare-earth-activated Y_2O_3 phosphors are investigated. They have three or four peaks between 85°K and 380°K. The efficiency of thermoluminescence in Y_2O_3: Eu is highest among the phosphors examined, being about ten times of those of the others. The main peak temperature of gamma-ray-induced thermoluminescence in Y_2O_3 activated by Eu or Dy is shifted about 10°K from that of photo-induced thermoluminescence. The emission colors in gamma-ray-induced thermoluminescence in Y_2O_3: Eu and Y_2O_3: Dy were inferred to be due to the proper photo-luminescent band of Eu^<3+> and Dy^<3+>, respectively. A broad white-like emission band was found for the lowest temperature peak of unactivated Y_2O_3. The effects of the heating rate for the present thermoluminescence are the same as in the usual phosphors. The activation energy was 0.996 eV for the highest temperature peak (348°K) of Y_2O_3: Eu. The growth and fading of this peak after gamma-irradiation at room temperature nearly obey monomolecular kinetics. The effect of radiation damage on the growth of the peak became remarkable with doses near 10^4R. The mechanism of the thermoluminescence and its applicability to radiation dosimetry are discussed.

• 社団法人応用物理学会の論文
• 1968-12-05

著者

• Huzimura Ryoitiro

  Government Industrial Research Institute Nagoya:(present Address) Department Of Physics Nara Univers

• Huzimura Ryoitiro

  Government Industrial Research Institute

• Ato Yasuro

  Government Industrial Research Institute Nagoya

• OZAWA Lyuji

  Research Department, Dai Nippon Tokyo Co. Ltd.

• Ato Yasuro

  Goverment Industrial Research Institute Nagoya

• Ozawa Lyuji

  Research Department Dai Nippon Tokyo Co. Ltd.:(present Address) Scientific Instrument Division Hitachi Ltd.

関連論文

• Computer Simulation of Range and Damage Distributions of He ions in SiC
• Implantation Profiles of Low-Energy Helium in Silicon Carbide
• TSEE Responses of Oxides Energetic Ion Bombardment
• Gamma-Ray Thermoluminescence in Rare-Earth-Activated Y_2O_3 Phosphors
• Europium Activated Yttrium-Thalium Oxide Phosphor
• Radiation Quenching of Radio- and Radiothermo-Luminescence of ZnS Phosphors : I.. Luminescent Process under Excitation
• Radiation Quenching of Radio- and Radiothermo-Luminescence of ZnS Phosphors : II. Trapping Process
• Channeling Effects of Low-Energy Protons on the Luminescent Response in CaF_2(Eu) Crystal
• Evidence of Energy Transfer from Pair Gadolinium Ions to Other Rare Earths in Yttrium-Gadolinium Oxide Crystal

スポンサーリンク