Observation of the dynamics leading to a conical intersection in dissociative electron attachment to water

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.030701· OSTI ID:22068610

Haxton, D J; Slaughter, D S; Osipov, T; Weber, T; Rescigno, T N; Belkacem, A ^[1]; Adaniya, H ^[1]; Rudek, B ^[1]; McCurdy, C W ^[1]

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1. Lawrence Berkeley National Laboratory, Chemical Sciences, Berkeley, California 94720 (United States)

Following prior work on the lower-energy resonances, we apply techniques of momentum imaging and ab initio scattering calculations to the process of dissociative electron attachment to water via the highest-energy {sup 2}B{sub 2} resonance. We focus on the H{sup -} anion fragment, which is produced via dynamics passing through and avoiding the conical intersection with the lower A{sub 1} state, leading to OH ({sup 2}{Pi}) and OH ({sup 2}{Sigma}), respectively. The momentum imaging technique, when combined with theoretical calculations on the attachment amplitude and dissociation dynamics, demonstrates that the angular distributions provide a signature of the location of the conical intersection in the space of nuclear configurations.

• OSTI ID: 22068610
• Journal Information: Physical Review. A, Vol. 84, Issue 3; Other Information: (c) 2011 American Institute of Physics; Country of input: Syrian Arab Republic; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
AMPLITUDES
ANGULAR DISTRIBUTION
DISSOCIATION
ELECTRON ATTACHMENT
HYDROGEN IONS 1 MINUS
RESONANCE
SCATTERING
WATER