Zaouris, D;
Kartakoullis, A;
Glodic, P;
Samartzis, PC;
Rafn Hróðmarsson, H;
Kvaran, Á;
(2015)
Rydberg and valence state excitation dynamics: a velocity map imaging study involving the E–V state interaction in HBr.
Physical Chemistry Chemical Physics
, 17
(16)
pp. 10468-10477.
10.1039/C5CP00748H.
Text
PCCP, HBr.pdf - Published Version Access restricted to UCL open access staff Download (2MB) |
Abstract
Photoexcitation dynamics of the E(1Σ+) (v′ = 0) Rydberg state and the V(1Σ+) (v′) ion-pair vibrational states of HBr are investigated by velocity map imaging (VMI). H+ photoions, produced through a number of vibrational and rotational levels of the two states were imaged and kinetic energy release (KER) and angular distributions were extracted from the data. In agreement with previous work, we found the photodissociation channels forming H*(n = 2) + Br(2P3/2)/Br*(2P1/2) to be dominant. Autoionization pathways leading to H+ + Br(2P3/2)/Br*(2P1/2) via either HBr+(2Π3/2) or HBr+*(2Π1/2) formation were also present. The analysis of KER and angular distributions and comparison with rotationally and mass resolved resonance enhanced multiphoton ionization (REMPI) spectra revealed the excitation transition mechanisms and characteristics of states involved as well as the involvement of the E–V state interactions and their v′ and J′ dependence.
Type: | Article |
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Title: | Rydberg and valence state excitation dynamics: a velocity map imaging study involving the E–V state interaction in HBr |
DOI: | 10.1039/C5CP00748H |
Publisher version: | http://dx.doi.org/10.1039/C5CP00748H |
Language: | English |
UCL classification: | UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
URI: | https://discovery.ucl.ac.uk/id/eprint/1475107 |
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