Effects of UV exposure on E' centers formed in crushed quartz grains

被引：6
作者：
Hirai, M
Ikeya, M
机构：
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1996年 / 35卷 / 08期
关键词：
quartz; crushing; grinding; ESR; E' center; SiO2; UV;
D O I：
10.1143/JJAP.35.4463
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Electron spin resonance (ESR) study of E' centers in crushed quartz (SiO2) indicated the formation of a new type of E' center by UV-irradiation. On the other hand, the concentration of E' centers formed by gamma-irradiation in the crushed quartz is reduced by UV-irradiation. It was possible to distinguish between the three types of E' centers in crushed quartz (E'(c): formed simply by crushing, E'(UV): formed by crushing and UV-irradiation and E'(gamma): formed by crushing and gamma-irradiation) using UV-irradiation. The distribution of the activation energy of the E' centers just after crushing was revealed by annealing experiments and computer simulation. The technique of characterization by UV-irradiation will be useful for evaluating the local strain in SiO2, especially in natural quartz.
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页码：4463 / 4467
页数：5
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