The multielectron character of the S 2p → 4eg shape resonance in the SF6 molecule studied via detection of soft X-ray emission and neutral high-Rydberg fragments

We have studied the nature of the S 2p → 4eg shape resonance in the SF6 molecule by performing two different experiments. Soft X-ray emission spectra measured at the 4eg shape resonance reveal features that do not originate from the S 2p-1 states. One of the features can be assigned to the 6a1g → S 2p transition. The 6a1g orbital, which is empty in the molecular ground state, can be populated either in core-valence double excitations or in S 2p shake-up transitions. Both these channels are considered. We have also studied the fragmentation of SF6 molecule after the decay of the S 2p core-hole states by observing neutral fragments in high-Rydberg states, where an electron occupies an orbital with n ≥ 20 (n is the principal quantum number). Such neutral fragments become, in relative terms, more abundant at the S 2p → 4eg shape resonance with respect to the S 2p → 2t2g shape resonance, which is a pure one-electron phenomenon.

Coreno, M.CNR Istituto Officina dei Materiali (IOM) (författare)
Miotti, P.CNR Istituto per le Tecnologie Applicate ai Beni Culturali (CNR-ITABC) (författare)
Frassetto, F.CNR Istituto per le Tecnologie Applicate ai Beni Culturali (CNR-ITABC) (författare)
Poletto, L.CNR Istituto per le Tecnologie Applicate ai Beni Culturali (CNR-ITABC) (författare)
Stråhlman, C.Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)maxl-csm (författare)
De Simone, M.CNR Istituto Officina dei Materiali (IOM) (författare)
Richter, R.Elettra Sincrotrone Trieste (författare)
CNR Istituto Officina dei Materiali (IOM)CNR Istituto per le Tecnologie Applicate ai Beni Culturali (CNR-ITABC) (creator_code:org_t)

Ingår i:Journal of Electron Spectroscopy and Related Phenomena: Elsevier BV209, s. 26-330368-2048

Av författaren/redakt...: Kivimäki, A.; Coreno, M.; Miotti, P.; Frassetto, F.; Poletto, L.; Stråhlman, C.; visa fler...; De Simone, M.; Richter, R.; visa färre...

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