arXivDaily arXiv每日学术速递 周一至周五更新
arXiv physics/0312137physics.atom-ph
收藏

Mg I同位素位移的组态相互作用计算

Configuration interaction calculation for the isotope shift in Mg I

J. C. Berengut, V. A. Dzuba, V. V. Flambaum, M. G. Kozlov

摘要:

本文在构型相互作用能量计算的基础上,提出了一种计算少价电子原子同位素位移的从头算方法。发展该方法的主要动机来自于分析早期宇宙中同位素丰度的差异是否会导致类星体吸收光谱中观测到的异常。目前对这些异常的最好解释是假设精细结构常数α在早期较小。我们表明,我们可以计算镁的同位素位移具有良好的精度。

英文摘要:

We present an ab initio method of calculation of isotope shift in atoms with a few valence electrons, based on the configuration-interaction calculation of energy. The main motivation for developing the method comes from the need to analyze whether differences in isotope abundance in early universe can contribute to the observed anomalies in quasar absorption spectra. The current best explanation for these anomalies is the assumption that the fine structure constant, alpha, was smaller at early epoch. We show that we can calculate the isotope shift in magnesium with good accuracy.

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。

↑