Atomic Displacements by Electron Irradiation in Pyrolytic Graphite
Atomic Displacements by Electron Irradiation in Pyrolytic Graphite
复制标题
热解石墨中电子辐照的原子位移
DOI：
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发表时间：
1971
期刊：
影响因子：
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通讯作者：
T. Nihira
中科院分区：
文献类型：
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作者：
T. Iwata;T. Nihira
通过观察a轴电阻率的增加，在三个不同温度下，在0.12到1.0 MeV的能量范围内研究了电子辐照热解石墨中原子位移的各向异性阈能和位移级联过程。阈能\(T_d\)以\(T_{d}(\varPsi)=A\cos^{2}\varPsi + B\sin^{2}\varPsi + C(1 - \cos4\varPsi)\equiv(A,B,C)\)（单位为eV）表示，其中\(\varPsi\)是c轴与位移方向之间的夹角。在6K和80K辐照下，\(T_d\)分别为一组\((23, 30, 0)\)和\((31, 30, -2)\pm2\)eV，并且当\(\varTheta = 0^{\circ}\)时级联遵循Harrison - Seitz替换模型，而当\(\varTheta = 90^{\circ}\)时遵循Kinchin - Pease模型，其中\(\varTheta\)是c轴与电子方向之间的夹角。在285K辐照下，\(T_d\)要么是\((28, 42, 0)\pm2\)eV，要么是一组\((28, 42, 0)\)和\((32, 42, -1)\pm2\)eV，并且当\(\varTheta = 0^{\circ}\)、\(30^{\circ}\cdots\)时级联遵循Harrison - Seitz（无替换）模型。
The anisotropic threshold energy for atomic displacements and the displacement cascade process in electron-irradiated pyrolytic graphite are studied in the energy range from 0.12 to 1.0 MeV at three different temperatures by observing the a -axis electrical resistivity increases. The threshold energy T d is represented as (T_{ ext{d}}(varPsi){=}Acos^{2}varPsi+Bsin^{2}varPsi+C(1-cos 4varPsi){equiv}(A,B,C)) in eV, where (varPsi) is the angle between the c -axis and the displacement direction. In the 6 and 80 K irradiations T d is given as a set of (23, 30, 0) and (31, 30, -2)±2 eV, and the cascade obeys the Harrison-Seitz Replacement model for (varTheta{=}0)°, but obeys the Kinchin-Pease model for (varTheta{=}90)°, where (varTheta) is the angle between the c -axis and the electron direction. In the 285 K irradiations T d is either (28, 42, 0)±2 eV, or a set of (28, 42, 0) and (32, 42, -1)±2 eV, and the cascade obeys the Harrison-Seitz (no replacement) model for (varTheta{=}0)°, 30°...