范德瓦尔斯团簇有限温度谱的理论研究。II时间相关吸收光谱
Theoretical study of finite temperature spectroscopy in van der Waals clusters. II Time-dependent absorption spectra
摘要：
利用近似配分函数和主方程方法，我们研究了在选定的CaAr $_n$团簇的统计弛豫向平衡。采用高斯吸收理论（前一篇文章）来计算与钙的4s^2-> 4s^14p^1跃迁相关的平均光吸收强度，作为弛豫期间时间的函数。在CaAr_6和CaAr_10中观察到单一时间尺度的简单弛豫。CaAr_13表现出慢得多的动力学和弛豫发生在两个不同的时间尺度。CaAr_37显示出慢得多的弛豫与多个瞬态，让人想起玻璃态行为，由于不同的低能结构之间的竞争。我们解释这些结果的基本势能面这些集群。
英文摘要：
Using approximate partition functions and a master equation approach, we investigate the statistical relaxation toward equilibrium in selected CaAr$_n$ clusters. The Gaussian theory of absorption (previous article) is employed to calculate the average photoabsorption intensity associated with the 4s^2-> 4s^14p^1 transition of calcium as a function of time during relaxation. In CaAr_6 and CaAr_10 simple relaxation is observed with a single time scale. CaAr_13 exhibits much slower dynamics and the relaxation occurs over two distinct time scales. CaAr_37 shows much slower relaxation with multiple transients, reminiscent of glassy behavior due to competition between different low-energy structures. We interpret these results in terms of the underlying potential energy surfaces for these clusters.
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。
