High-Resolution Photoelectron Imaging and Photodetachment Spectroscopy of Cryogenically Cooled IO

High-Resolution Photoelectron Imaging and Photodetachment Spectroscopy of Cryogenically Cooled IO

We report a high-resolution photoelectron imaging and photodetachment spectroscopy study of cryogenically cooled IO–. The high-resolution photoelectron spectra yield a more accurate electron affinity (EA) of 2.3805(5) eV for IO as well as a more accurate spin–orbit splitting energy between the 2Π3/2...

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Veröffentlicht in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2020-07, Vol.124 (28), p.5720-5726
Hauptverfasser: Wang, Yong-Tian, Ning, Chuan-Gang, Liu, Hong-Tao, Wang, Lai-Sheng
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A: Kinetics, Dynamics, Photochemistry, and Excited States
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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container_issue 28
container_start_page 5720
container_title The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory
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creator Wang, Yong-Tian
Ning, Chuan-Gang
Liu, Hong-Tao
Wang, Lai-Sheng
description We report a high-resolution photoelectron imaging and photodetachment spectroscopy study of cryogenically cooled IO–. The high-resolution photoelectron spectra yield a more accurate electron affinity (EA) of 2.3805(5) eV for IO as well as a more accurate spin–orbit splitting energy between the 2Π3/2 and 2Π1/2 states of IO as 2093(5) cm–1. Photodetachment spectroscopy confirmed several excited states for the IO– anion predicted by theoretical calculations, including two valence-type excited states, the repulsive 3Π state, and a shallow bound 1Π state. More interestingly, we have observed two vibrational resonances which are proposed to be due to a dipole-induced resonant state, about 230 cm–1 above the detachment threshold of IO–.
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INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
title High-Resolution Photoelectron Imaging and Photodetachment Spectroscopy of Cryogenically Cooled IO
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