Auger-electron angular distributions calculated without the two-step approximation: Calculation of angle-resolved resonant Auger spectra of C{sub 2}H{sub 2}
- Dipartimento di Chimica Applicata e Scienza dei Materiali, Universita di Bologna, INSTM, Via Saragozza n. 8, 40136 Bologna (Italy)
- Scuola Normale Superiore, 56100 Pisa (Italy)
- Dipartimento di Fisica, Universita di Camerino, INFM, Via Madonna delle Carceri 7, I-62032 Camerino (Italy)
- Dipartimento di Energetica, Nucleare e Controllo Ambientale, Universita di Bologna, INFM, Via Risorgimento 4, 40136 Bologna (Italy)
Analytic expressions for the direct, resonant, and interference contributions to the differential cross section of a resonant Auger process, produced by the inner-shell photoionization of a linear molecule either 'fixed in space' or belonging to a gas of randomly oriented molecules, have been derived following Dill's procedures [Dill et al., Phys. Rev. Lett. 45, 1393 (1980)], but going beyond the two-step approximation. Angle-resolved Auger spectra of the C{sub 2}H{sub 2} molecule measured on top of the C 1s{yields}{pi}* resonance [Kivimaeki et al., J. Phys. B 30, 4279 (1997)] have been calculated together with asymmetry parameters, analyzing also the different contributions to the electron angular distributions.
- OSTI ID:
- 20646368
- Journal Information:
- Physical Review. A, Vol. 70, Issue 4; Other Information: DOI: 10.1103/PhysRevA.70.042708; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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