Van der Waals potential and vibrational energy levels of the ground state radon dimer

被引：2

作者：

Sheng, Xiaowei ^{[1
,2
]}

Qian, Shifeng ^{[1
]}

Hu, Fengfei ^{[1
]}

机构：

[1] Anhui Normal Univ, Dept Phys, Wuhu 241000, Anhui, Peoples R China

[2] Anhui Prov Key Lab Optoelect Mat Sci & Technol, Wuhu 241000, Peoples R China

来源：

CHEMICAL PHYSICS | 2017年 / 493卷

基金：

中国国家自然科学基金;

关键词：

DISPERSION COEFFICIENTS; COMBINING RULES; ATOMS; POLARIZABILITIES; MODEL; RN-2; XE-2; HE;

D O I：

10.1016/j.chemphys.2017.06.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the present paper, the ground state van der Waals potential of the Radon dimer is described by the Tang-Toennies potential model, which requires five essential parameters. Among them, the two dispersion coefficients C-6 and C-8 are estimated from the well determined dispersion coefficients C-6 and C-8 of Xe-2. C-10 is estimated by using the approximation equation that C6C10/C-8(2) has an average value of 1.221 for all the rare gas dimers. With these estimated dispersion coefficients and the well determined well depth D-e and R-e the Born-Mayer parameters A and b are derived. Then the vibrational energy levels of the ground state radon dimer are calculated. 40 vibrational energy levels are observed in the ground state of Rn-2 dimer. The last vibrational energy level is bound by only 0.0012 cm(-1). (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：111 / 114

页数：4

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