Franck--Condon factors and r-Centroids for the A 1∑+u-X1∑+g Band System of 107,109Ag2: Comparison of the Observed and Calculated Absorption Band Strengths |
| |
作者姓名: | A.Antic-Jovanovic M.Kuzmanovic V.Bojovic Murtadha A.Khakoo Russ R.Laher |
| |
作者单位: | [1]Faculty of Physical Chemistry, University of Belgrade, PO Box 137, 1001 Belgrade, Serbia [2]Department of Physics, California State University Fullerton, Fullerton, CA 92834, USA [3]Spitzer Science Center, California Institute of Technology, M/S 314-6, Pasadena, CA 91125, USA |
| |
基金项目: | Supported by the Ministry of Science and Environmental Protection of the Republic of Serbia under Grant No 142065. |
| |
摘 要: | Franck-Condon factors and r-centrolds for the, A^1 ∑^+ u-X^1∑^+ 9 band system of ^107,109Ag2 are computed using Morse and Rydberg-Klein-Rees potentials for both lower and upper electronic states. The differences between the two sets of results are typically in the third decimal place for transitions involving vibrational levels with ν' and ν" up to about 15. Somewhat larger deviations appear for higher vibrational levels, but both sets of results follow the same pattern, which is to match well with the relative absorption band strength distribution in our experimental spectrum. The relative absorption band strengths are calculated by assuming that the electronic transition moment has only a weak dependence on the internuclear distance r. Good agreement between our measured and calculated absorption band strength ratios is found, which provides an excellent test of the calculated Franck- Condon factors and relative absorption band strengths. The r-centrold value for the (ν' = 0, ν" = 0) band is found to be approximately equal to the average value of r' and r''e , indicating that the potentials of both states are not significantly aaharmonic around their minimum regions.
|
关 键 词: | A^1 ∑^+ u-X^1∑^+ 9 ^107 109Ag2 弗兰克因子 吸收作用 宽带系统 |
收稿时间: | 2007-4-3 |
修稿时间: | 2007-04-03 |
本文献已被 维普 等数据库收录! |
| 点击此处可从《中国物理快报》浏览原始摘要信息 |
| 点击此处可从《中国物理快报》下载免费的PDF全文 |
|