Rydberg and valence state excitation dynamics: a velocity map imaging study involving the E–V state interaction in HBr
Literature Information
Dimitris Zaouris, Andreas Kartakoullis, Pavle Glodic, Peter C. Samartzis, Helgi Rafn Hróðmarsson, Ágúst Kvaran
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.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.













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