| Autor: |
Kennedy, Eugene T., Mosnier, Jean-Paul, van Kampen, Paul, Bizau, Jean-Marc, Cubaynes, Denis, Guilbaud, Ségolène, Carniato, Stéphane, Puglisi, Alessandra, Sisourat, Nicolas |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
Kennedy, Eugene T. ORCID: 0000-0002-0710-5281 , Mosnier, Jean-Paul ORCID: 0000-0002-9312-1754 , van Kampen, Paul, Bizau, Jean-Marc, Cubaynes, Denis, Guilbaud, Ségolène, Carniato, Stéphane, Puglisi, Alessandra ORCID: 0000-0002-8429-1639 and Sisourat, Nicolas (2018) Vibrational effects in the photo-ion yield spectrum of the SiH2+ molecular ion following 2p inner-shell excitation. In: International Conference on Spectral Lines Shapes, 17-22 June 2018, Dublin, Ireland. |
| Popis: |
We report on complementary theoretical and laboratory investigations of the 2p ion yield cross sections for the molecular-ion series SiHn + (n = 1, 2, 3), in the 95-108 eV photon energy range, below the L-shell threshold. The experiments used an electron cyclotron resonance (ECR) plasma molecular-ion source coupled with monochromatised synchrotron radiation in a merged-beam configuration. The experimental spectra are compared with total photoabsorption cross-sectional profiles calculated using an ab initio configuration interaction method inclusive of spin-orbit coupling and the vibrational dynamics. The experimental results show vibrationally resolved resonances for SiH2+ in the 98-102 eV range. The calculations indicate twenty four core-excited states below the energy of 102 eV, of which only four contribute significantly to the observed spectrum. These states correspond to the excitation of an atomic-like 2p electron to the SiH2 + (5a1) valence orbital. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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