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Issue 30, 2017
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Role of electronic correlations in photoionization of NO2 in the vicinity of the 2A1/2B2 conical intersection

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Abstract

We present the first ab initio multi-channel photoionization calculations for NO2 in the vicinity of the 2A1/2B2 conical intersection, for a range of nuclear geometries, using our newly developed set of tools based on the ab initio multichannel R-matrix method. Electronic correlation is included in both the neutral and the scattering states of the molecule via configuration interaction. Configuration mixing is especially important around conical intersections and avoided crossings, both pertinent for NO2, and manifests itself via significant variations in photoelectron angular distributions. The method allows for a balanced and accurate description of the photoionization/photorecombination for a number of different ionic channels in a wide range of photoelectron energies up to 100 eV. Proper account of electron correlations is crucial for interpreting time-resolved signals in photoelectron spectroscopy and high harmonic generation (HHG) from polyatomic molecules.

Graphical abstract: Role of electronic correlations in photoionization of NO2 in the vicinity of the 2A1/2B2 conical intersection

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Article information


Submitted
14 Mar 2017
Accepted
04 May 2017
First published
17 May 2017

This article is Open Access

Phys. Chem. Chem. Phys., 2017,19, 19673-19682
Article type
Paper

Role of electronic correlations in photoionization of NO2 in the vicinity of the 2A1/2B2 conical intersection

D. S. Brambila, A. G. Harvey, K. Houfek, Z. Mašín and O. Smirnova, Phys. Chem. Chem. Phys., 2017, 19, 19673
DOI: 10.1039/C7CP01643C

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