Enhancement of oxygen vacancies in quartz by natural external .BETA. and .GAMMA. ray dose: a possible ESR Geochronometer of Ma-Ga range.

DOI Web Site 被引用文献1件 オープンアクセス
  • Toyoda Shin
    Department of Earth and Space Science, Faculty of Science, Osaka University
  • Ikeya Motoji
    Department of Earth and Space Science, Faculty of Science, Osaka University
  • Morikawa Junko
    Department of Earth and Space Science, Faculty of Science, Osaka University
  • Nagatomo Tsuneto
    Department of Applied Physics, Nara University of Education

書誌事項

公開日
1992
DOI
  • 10.2343/geochemj.26.111
公開者
一般社団法人日本地球化学会

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説明

The relative concentration of oxygen vacancies in granitic quartz was estimated using the ESR signal intensity of E′ centers (an electron at an oxygen vacancy) after γ ray irradiation and subsequent heating at 300°C. The E′ intensity indicative of total oxygen vacancies in granitic quartz is correlated with total absorbed dose from β and γ rays for the geological ages ranging from 12 to 1700 Ma. The amount of oxygen vacancies in natural quartz created by β and γ rays may be comparable in the absorbed dose range of 104 to 107 Gy to the amount by α-recoil effect.

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