Radiation Damage of NaI(Tl) by Fast Neutron Irradiation: Blocking of the Energy Transfer Processes from<i><i>V</i>_{<b><i>k</i></b>}</i>Centers and Electrons to the Activator of Tl

• Kubota Shinzou

  Rikkyo University, Nishi–Ikebukuro 3, Tokyo 171–0021

• Shiraishi Fumio

  Institute for Atomic Energy, Rikkyo University, Yokosuka 240–0101

• Takami Yasukiyo

  Institute for Atomic Energy, Rikkyo University, Yokosuka 240–0101

書誌事項

タイトル別名

• Radiation Damage of NaI(Tl) by Fast Neutron Irradiation: Blocking of the Energy Transfer Processes from Vk Centers and Electrons to the Activator of Tl.

抄録

The scintillation pulse heights and decay curves from fast-neutron irradiated NaI(Tl) crystals up to the integrated fast neutron flux of 2.4× 10¹⁵, cm^-2 were measured under excitation by electrons, alpha particles and fission fragments. For Tl concentrations of 0.01, 0.07 and 0.22, mole&pulse; heights are observed for the irradiated crystals compared with those of non-irradiated crystals. The decreases are enhanced for electron excitation compared with those for alpha particle and fission fragment excitation. The decrease in scintillation pulse height is attributed to blocking of the energy transfer processes of V_k centers and electrons by the traps and lattice disorders which were produced by fast neutrons. The effect of this blocking of the energy transfer processes is clearly observed as a difference in decay curves for the crystals before and after fast neutron irradiation; a flat top which appeared before the irradiation is not present after irradiation.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 68 (1), 298-302, 1999

  一般社団法人 日本物理学会

キーワード

• scintillation processes
• NaI(Tl)
• scintillator
• radiation damage
• luminescence

詳細情報

• CRID: 1390001204181950848
• NII論文ID: 110001955233
• NII論文ID: 130004536781
• NII論文ID: 210000101848
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.68.298
• BIBCODE: 1999JPSJ...68..298K
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 4647700
• Web Site: http://id.ndl.go.jp/bib/4647700
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4647700
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.68.298
• 本文言語コード: en
• データソース種別:
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  • Crossref
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