STUDY OF THE LOW-LYING STATES OF GE-2 AND GE-2(-) USING NEGATIVE-ION ZERO ELECTRON KINETIC-ENERGY SPECTROSCOPY

被引:63
作者
ARNOLD, CC [1 ]
XU, CS [1 ]
BURTON, GR [1 ]
NEUMARK, DM [1 ]
机构
[1] UNIV CALIF BERKELEY,DIV CHEM SCI,BERKELEY,CA 94720
关键词
D O I
10.1063/1.469091
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
The low-lying states of Ge2 and Ge2- are probed using negative ion zero electron kinetic energy (ZEKE) spectroscopy. The ZEKE spectrum of Ge2- yields an electron affinity of 2.035±0.001 eV for Ge2, as well as term energies and vibrational frequencies for the low-lying states of Ge2- and Ge2. Specifically, we observe transitions originating from the anion 2Πu(3/2) ground state and 3Σ g+ excited state (Te=279±10 cm -1) to several triplet and singlet states of Ge2. Term values and vibrational frequencies are determined for the Ge2 3Σg+ ground state, the low-lying 3Πu excited state (Te=337 cm-1 for the 2u spin-orbit component), and the somewhat higher lying 1Δg, 3Σg+, and 1Πu states. We also determine the zero-field splitting for the X0g+ and 1g components of the 3Σg+ state and the splittings between the 2U, 1u, and 0u± spin-orbit components of the 3Πu state. Detailed comparisons are made with Si2 and Si2-. © 1995 American Institute of Physics.
引用
收藏
页码:6982 / 6989
页数:8
相关论文
共 45 条