• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Physics of Metals and Metallography >Calculations of the Probability of Positron Trapping by a Vacancy in a Metal and the Estimation of the Vacancy Contribution to the Work Function of Electrons and Positrons
【24h】

Calculations of the Probability of Positron Trapping by a Vacancy in a Metal and the Estimation of the Vacancy Contribution to the Work Function of Electrons and Positrons

机译：金属中空位俘获正电子的概率的计算以及空位对电子和正电子功函数的贡献的估计

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The probabilities of the localization of positrons in monovacancies of Al and Cu have been calculated as functions of the energy and temperature. The vacancy was simulated by a void with a radius equal to the radius of the Wigner-Seitz cell in the model of stable jellium. Using the Fermi-Dirac golden rule for transitions, the formula for the rate of positron trapping by a vacancy has been derived as the function of the positron energy. For the thermalized positrons, the rate of localization near the triple point proved to be, on the order of magnitude, close to the rate of annihilation. Within the framework of our previously proposed models, the contribution of vacancies to the work function of electrons and positrons has been demonstrated based on the example of Al. The physical situations where the vacancy effect can manifest have been considered.
机译：已计算出Al和Cu的单空位中正电子的定位概率是能量和温度的函数。在空洞中，通过一个空洞来模拟空洞，该空洞的半径等于稳定果冻模型中Wigner-Seitz细胞的半径。使用费米-狄拉克黄金定律进行跃迁，得出了空位俘获正电子的速率公式，作为正电子能量的函数。对于热正电子，事实证明，在三点附近的局域化速率在数量级上接近of灭率。在我们先前提出的模型的框架内，以铝为例证明了空位对电子和正电子的功函数的贡献。已经考虑了可能会出现空缺影响的物理情况。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号