Penning ionization: In benzene · Ar and fluorobenzene · Ar van der waals molecules and in collisions of benzene with metastable Ar atoms

The photoion efficiency curves of the van der Waals complexes benzene ·Ar (Bz·Ar) and fluorobenzene·Ar (Fb·Ar) exhibit sharp resonances, which correspond to excitation to the Ar 2P 3 2 4s and 2P 1 2 4s resonance states. The peaks are redshifted relative to their asymptotic values (Bz·Ar, Δ E = −70 ±...

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Bibliographic Details
Published in:Chemical physics letters 1986, Vol.128 (5), p.512-516
Main Authors: Rühl, E., Bisling, P., Brutschy, B., Beckmann, K., Leisen, O., Morgner, H.
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Photon interactions with molecules
Physics
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Summary:The photoion efficiency curves of the van der Waals complexes benzene ·Ar (Bz·Ar) and fluorobenzene·Ar (Fb·Ar) exhibit sharp resonances, which correspond to excitation to the Ar 2P 3 2 4s and 2P 1 2 4s resonance states. The peaks are redshifted relative to their asymptotic values (Bz·Ar, Δ E = −70 ± 10 meV; Fb·Ar, Δ E = −40 ± 10 meV). These findings are supported by electron spectroscopy studies of the Penning ionization of benzene by state-selected metastable Ar ( 3p 2, 3p 0) atoms. Strong evidence is presented that Penning ionization is the process observed in both cases.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(86)80664-9