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Pregled bibliografske jedinice broj: 292609

Angle-differential electron energy spectra for the autoionization systems He*(2 1S)+H/D(1 2S): Comparison between ab initio theory and experiment


Movre, Mladen; Meyer, W.; Merz, A.; Ruf, M. -W.; Hotop, H.
Angle-differential electron energy spectra for the autoionization systems He*(2 1S)+H/D(1 2S): Comparison between ab initio theory and experiment // Chemical Physics Letters, 230 (1994), 3; 276-282 (međunarodna recenzija, članak, znanstveni)


Naslov
Angle-differential electron energy spectra for the autoionization systems He*(2 1S)+H/D(1 2S): Comparison between ab initio theory and experiment

Autori
Movre, Mladen ; Meyer, W. ; Merz, A. ; Ruf, M. -W. ; Hotop, H.

Izvornik
Chemical Physics Letters (0009-2614) 230 (1994), 3; 276-282

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Angle-differential; electron energy spectra; Penning ionization

Sažetak
We present angle-dependent electron energy spectra due to ionizing collisions ofmetastable He*(2 1S) atoms with ground-state hydrogen and deuterium atoms. The data, measured at thermal collision energies (rel≈ 50 meV), show an angular variation of the spectral shape which is well reproduced by a quantum-mechanical calculation based on local complex potential theory. The ab initio calculated resonance-to-continuum complex coupling elements show a strong dependence on the electronic structure of the quasi-molecule and its changes with internuclear separation. Therefore the total autoionization width shows a significant deviation from a damped exponential shape. Autoionization occurs dominantly into the (molecule fixed) electronic p wave. Calculated total autoionization cross sections are 84 &Aring ; 2 at Erel = 50 meV. and follow approximately a Erel - 0.5 decay for larger energies. At Erel = 50 meV, associative and quasi-associative processes account for about 12% and 4%, respectively, of the total cross section.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
1-03-051

Ustanove
Institut za fiziku, Zagreb

Autor s matičnim brojem:
Mladen Movre, (32514)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Uključenost u ostale bibliografske baze podataka:


  • Chemical Abstracts
  • The INSPEC Science Abstracts series