Precise molecular constants for the 6Li2A1Σ+u-X1Σ+g system by sub-Doppler polarization spectroscopy

被引:15
作者
Wang, XJ [1 ]
Yang, J [1 ]
Qi, JB [1 ]
Lyyra, AM [1 ]
机构
[1] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA
基金
美国国家科学基金会;
关键词
D O I
10.1006/jmsp.1998.7645
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
We report here new and more accurate molecular constants from sub-Doppler polarization spectroscopy of the A(1)Sigma(u)(+)- X(1)Sigma(g)(+) system of Li-6(2) using single mode cw dye lasers. These new constants cover the range of vibrational levels from upsilon " = 0-8 the ground state and upsilon " = 0-24 in the excited state. New molecular constants and RKR potential energy curves for the A(1)Sigma(u)(+) and X(1)Sigma(g)(+) stares are given. The T-e value for the A(1)Sigma(u)(+) state is 14068.043(34) cm(-1). The analysis indicates that there is a noticeable breakdown of the Born-Oppenheimer approximation for the Li-6(2) and Li-7(2) isotopomers. (C) 1998 Academic Press.
引用
收藏
页码:295 / 305
页数:11
相关论文
共 34 条
[1]  
[Anonymous], 1996, LASER SPECTROSCOPY B
[2]   A SPECTROSCOPIC STUDY OF THE G1-PI-G STATE OF LI-7(2) BY PULSED OPTICAL-OPTICAL DOUBLE-RESONANCE [J].
BERNHEIM, RA ;
GOLD, LP ;
KELLY, PB ;
TIPTON, T ;
VEIRS, DK .
JOURNAL OF CHEMICAL PHYSICS, 1981, 74 (05) :2749-2754
[3]   RYDBERG STATES OF LI-7(2) BY PULSED OPTICAL OPTICAL DOUBLE-RESONANCE SPECTROSCOPY - MOLECULAR-CONSTANTS OF LI-7(2+) [J].
BERNHEIM, RA ;
GOLD, LP ;
TIPTON, T .
JOURNAL OF CHEMICAL PHYSICS, 1983, 78 (06) :3635-3646
[4]   A SPECTROSCOPIC STUDY OF THE E-1-SIGMA-G+ AND F-1-SIGMA-G+ STATES OF (LI2)-LI-7 BY PULSED OPTICAL-OPTICAL DOUBLE-RESONANCE [J].
BERNHEIM, RA ;
GOLD, LP ;
KELLY, PB ;
TOMCZYK, C ;
VEIRS, DK .
JOURNAL OF CHEMICAL PHYSICS, 1981, 74 (06) :3249-3254
[5]   MEASUREMENT OF BROADENING RATES, SHIFTS, AND EFFECTIVE LIFETIMES OF LI-2 RYDBERG LEVELS BY OPTICAL DOUBLE-RESONANCE SPECTROSCOPY [J].
BOMBACH, R ;
HEMMERLING, B ;
DEMTRODER, W .
CHEMICAL PHYSICS, 1988, 121 (03) :439-447
[7]  
DAI HL, 1995, ADV PHYSICAL CHEM, P251
[8]  
DAI HL, 1995, ADV PHYSICAL CHEM, P459
[9]   THE MOLECULAR ELECTRONIC-STRUCTURE OF THE 26 LOWEST LYING STATES OF LI2 AT SHORT AND INTERMEDIATE INTERNUCLEAR SEPARATIONS [J].
KONOWALOW, DD ;
FISH, JL .
CHEMICAL PHYSICS, 1984, 84 (03) :463-475
[10]   LONG-RANGE INTERACTIONS OF LI(N=2) STATES WITH EACH OTHER AND THE LONG-RANGE INTERACTION OF LI(2S2S) WITH LI(3S2S) [J].
KONOWALOW, DD ;
FISH, JL .
CHEMICAL PHYSICS, 1983, 77 (03) :435-448