沉积物中石英氧空位平均寿命的研究  

A study of the average life of oxygen vacancies in quartz from sediments

作　　者：刁少波[1] 业渝光[1] 

机构地区：[1]国土资源部海洋沉积开放研究实验室,青岛266071

出　　处：《核技术》2001年第12期974-979,共6页Nuclear Techniques

基　　金：国家自然科学基金 (4 9876 0 14);地质行业科学技术发展基金 (95 96 0 2 )

摘　　要：采用热活化技术 ,用E’心的电子自旋共振信号估算出沉积物中石英氧空位心的平均寿命。实验结果表明 ,二级动力学方程更适于沉积物中石英氧空位心平均寿命的估算。塔里木盆地深层沉积物 (4895— 4 90 8m)中石英氧空位心在 2 7℃时的平均寿命为 10 18年。The average life of oxygen vacancies in quartz from sediments were estimated using ESR signal intensity of E' centers by thermal activitation technique. The experimental results showed that the second order kinetics equation was more suitable to estimate the average life than the first order kinetic equation. The average life of oxygen vacancies in quartz of sediments form 4895m to 4908m in Tarim basin was about 10 18 years at 27℃, and it was three orders of magnitude bigger than the average life in granitic quartz at the same temperature.

关 键 词：退火实验 沉积物 平均寿命 氧空位 石英 热活化技术 电子自旋共振 年代测定 塔里木盆地 

分 类 号：P512.2[天文地球—地质学] P597