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Profile of resonant photoelectron spectra versus the spectral function width and photon frequency detuning
KTH, School of Biotechnology (BIO), Theoretical Chemistry (closed 20110512).ORCID iD: 0000-0003-1269-8760
KTH, School of Biotechnology (BIO), Theoretical Chemistry (closed 20110512).
KTH, Superseded Departments, Biotechnology.
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2004 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 70, no 3Article in journal (Refereed) Published
Abstract [en]

The outermost, singly ionized valence state of N-2, the X (2)Sigma(g)(+) state, is investigated in detail as a function of the photon frequency bandwidth for core excitation to the N 1s-->pi(*) resonance, where the photon frequency is tuned in between the first two vibrational levels of this bound intermediate electronic state. We find a strong, nontrivial dependence of the resulting resonant photoemission spectral profile on the monochromator function width and the frequency of its peak position. For narrow bandwidth excitation we observe a well resolved vibrational fine structure in the final electron spectrum, which for somewhat broader bandwidths gets smeared out into a continuous structure. For even broader monochromator bandwidths, it converts again into a well resolved vibrational progression. In addition, spectral features appearing below the adiabatic transition energy of the ground state of N-2(+) are observed for broadband excitation. A model taking into account the interplay of the partial scattering cross section with the spectral function is presented and applied to the X (2)Sigma(g)(+) final state of N-2(+).

Place, publisher, year, edition, pages
2004. Vol. 70, no 3
Keyword [en]
core-excited state, auger-spectra, raman-scattering, molecules, excitation, n-2, decay, energy, hole, hcl
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:kth:diva-23822DOI: 10.1103/PhysRevA.70.032708ISI: 000224623000077ScopusID: 2-s2.0-20844433040OAI: diva2:342521
QC 20100525 QC 20110923Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-09-23Bibliographically approved

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Kimberg, VictorBaev, AlexanderGel'mukhanov, FarisÅgren, Hans
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Theoretical Chemistry (closed 20110512)Biotechnology
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