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EnglishAnalytic expressions of 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 D et al 1980 Phys. Rev. Lett. 45, 1393], but going beyond the two-step approximation. Angle-resolved Auger spectra of the C2H2 molecule measured on top of the C 1s->pi* resonance [Kivimaki A et al. 1997 J. Phys. B: At. Mol. Opt. Phys. 30, 4279] have been calculated together with asymmetry parameters, analyzing also the different contributions to the electron angular distributions.
| Titolo: | Auger-electron angular distributions calculated without the two-step approximation: calculation of angle-resolved resonant Auger spectra of C2H2 |
| Autore/i: | COLLE, RENATO; EMBRIACO D.; MASSINI M.; SIMONUCCI S.; TAIOLI S. |
| Autore/i Unibo: | |
| Anno: | 2004 |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevA.70.042708 |
| Abstract: | Analytic expressions of 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 D et al 1980 Phys. Rev. Lett. 45, 1393], but going beyond the two-step approximation. Angle-resolved Auger spectra of the C2H2 molecule measured on top of the C 1s->pi* resonance [Kivimaki A et al. 1997 J. Phys. B: At. Mol. Opt. Phys. 30, 4279] have been calculated together with asymmetry parameters, analyzing also the different contributions to the electron angular distributions. |
| Data prodotto definitivo in UGOV: | 2005-10-10 13:12:23 |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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http://hdl.handle.net/11585/11549
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