Radiation damage produced in quartz by energetic ions
Radiation damage produced in quartz by energetic ions
复制标题
高能离子对石英造成的辐射损伤
DOI：
10.1080/10420159208228862
复制
发表时间：
1992
影响因子：
1
通讯作者：
E. Dooryhee
中科院分区：
文献类型：
--
作者：
L. Douillard;F. Jollet;J. Duraud;R. Devine;E. Dooryhee
本文研究了高能离子辐照对石英晶体结构的原子和电子结构的影响。用X射线吸收光谱（XANES，EXAFS）探测辐照石英的原子结构。电子结构的修改进行了研究，XPS和体顺磁点缺陷的ESR。实验数据表明，对于轻离子（O），辐照石英靶保持其长程有序。沿离子路径沿着产生E ′点缺陷，即氧空位缺陷，其效率很低（2 GeV/E ′），接近于γ射线的效率。对于较重的离子（Kr，Pb），辐照损伤由扩展缺陷的踪迹。这些扩展的缺陷由非晶SiO2状态组成。这些非晶化区域的密度比普通松弛二氧化硅大约4%。这种致密性差的二氧化硅看起来类似于通过中子辐照石英获得的二氧化硅。E'缺陷主要位于这些非晶区内部（>85%）。
Abstract Present work deals with atomic and electronic alterations of the quartz structure by high energy ion irradiation. The atomic structure of irradiated quartz is probed by means of X-ray absorption spectroscopies (XANES, EXAFS). Electronic structure modifications are investigated by XPS and bulk paramagnetic point defects by ESR. The experimental data suggest that for light ions (O), irradiated quartz targets preserve their long range order. E' point defects, i.e. oxygen vacancy defects, are created along the ion path with a poor efficiency (2 GeV/E'), close to the efficiency of y rays. For heavier ions (Kr, Pb), irradiation damage consists of a trail of extended defects. These extended defects are composed of an amorphous SiO2 state. The density of these amorphized regions is about 4% larger than the common relaxed silica. This poorly densified silica appears similar to that obtained by neutron irradiation of quartz. E’ defects are mostly located inside these amorphous zones (>85%).
自由基氧形成的SiO2的介电特性
DOI：
--
发表时间：
2007
期刊：
影响因子：
--
作者：
S.;Okamoto・R.;Hasunuma and K.;Yamabe
通讯作者：
Yamabe