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arXiv 0903.3229physics.atom-ph
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高电荷态重离子两步辐射复合的极化研究

Polarization studies on the two-step radiative recombination of highly-charged, heavy ions

A. V. Maiorova, A. Surzhykov, S. Tashenov, V. M. Shabaev, S. Fritzsche, G. Plunien, Th. Stoehlker

摘要:

在密度矩阵理论和狄拉克相对论方程的框架内,研究了自由电子到高Z裸离子激发态的辐射复合及其随后的衰变。特别注意的是复合和衰变光子之间的偏振和角度相关性。为了对这些关联进行系统的分析,利用共振近似得到了双微分复合截面的一般表达式。在此基础上,对铀离子U^92+的(e,2γ)两步复合过程中发射的X射线光子的线偏振进行了详细的计算。

英文摘要:

The radiative recombination of a free electron into an excited state of a bare, high-Z ion is studied, together with its subsequent decay, within the framework of the density matrix theory and Dirac's relativistic equation. Special attention is paid to the polarization and angular correlations between the recombination and the decay photons. In order to perform a systematic analysis of these correlations the general expression for the double-differential recombination cross section is obtained by making use of the resonance approximation. Based on this expression, detailed computations for the linear polarization of x-ray photons emitted in the (e, 2γ) two-step recombination of uranium ions U^92+ are carried out for a wide range of projectile energies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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