Thermal stability of ESR signals in hydrothermal barites

Fumihiro Sato, Shin Toyoda, Debabrata Banerjee, Jun Ichiro Ishibashi

研究成果: ジャーナルへの寄稿学術誌査読

7 被引用数 (Scopus)

抄録

Thermal stability of the ESR signals from barites in chimneys deposited from hydrothermal vents is investigated using isothermal and isochronal annealing experiments. A combination of first and second order kinetics is required to explain the results. The Arrhenius plots of the decay rate constants give the activation energies of 1.0-1.3 eV. From the estimated decay rate constants at the sea bottom (3 °C), the decay rate of the signal was calculated to be less than 2% for the period of 20 ka, suggesting the applicability of the ESR method for dating barites up to about twenty thousand years.

本文言語英語
ページ(範囲)866-870
ページ数5
ジャーナルRadiation Measurements
46
9
DOI
出版ステータス出版済み - 9月 2011

!!!All Science Journal Classification (ASJC) codes

  • 放射線
  • 器械工学

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