Dissociative decay of NeH and NeD Rydberg states: A strong isotope effect
1989; American Institute of Physics; Volume: 91; Issue: 11 Linguagem: Inglês
10.1063/1.457357
ISSN1520-9032
AutoresP. Devynck, W. G. Graham, J. R. Peterson,
Tópico(s)Molecular Spectroscopy and Structure
ResumoRadiative and predissociative decay of the n=2 Rydberg states of NeH and NeD is examined using translational spectroscopy to determine the c.m. kinetic energies of the dissociation fragments. The n=2 states are produced from 5 keV NeH+ and NeD+ by electron capture in Cs vapor. Expected radiative dissociation of the B 2Π state is observed in NeH, as is predissociation of the A 2Σ+. However, a surprisingly strong suppression of predissociation occurs in NeD. It is attributed primarily to a reduced overlap of the bound and continuum nuclear wave functions, and results in radiative decay. The results for both species support calculations of Theodorakopoulos et al. [J. Phys. B 20, 5335 (1987)].
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