Non-adiabatic coupling in the autoionizing He(2 3S)—H2 system
✍ Scribed by J. Vojtík; I. Paidarová; F. Schneider
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 546 KB
- Volume
- 114
- Category
- Article
- ISSN
- 0301-0104
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The method of diatomics-in-molecules (DIM) which constructs the hamiltonian matrix semi-empirically from known atomic and diatomic fragment energy data, is used to generate approximate 3D potential energy hypersurfaces and nonadiabatic coupling coefficients for the system (HeHH) +. To reduce the siz
The DIM method IS used to compute the resonant energy and the autoionization width for a wide range of confguratlons of the He(2 %)-HZ system. The calculations reveal possible non-admbatlc characrer of the Penrung ~onl~amn ar hgher He(2 3S)-H, colhsion energies The DIM model is found to be apable of
We present angle-dependent electron energy spectra due to ionizing collisions of metastable He\*(2 'S) atoms with groundstate hydrogen and deuterium atoms. The data, measured at thermal collision energies (I?,,, = 50 meV), show an angular variation of the spectral shape which is well reproduced by a
## Potcntulenergysurfxesnnd thcnutororuzattonwrdthforthcPenrung1oluzationtr~rllonHe(Z~S)+H~~He+H2+ +ehave been cakulalcd usmg the DIM method. The surfxcs cornpam fwounbly wtb the eustmg ab UUIIO cakul~lrons, and the approuuncltton to the nutolonlzation wdth appcx to be rcclsonlblc.