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Interference modulation in the vibrationally resolved photoionization of the 1 sigma(g) and 1 sigma(u) core levels of the N-2 molecule
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2006 (English)In: Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, E-ISSN 1361-6455, Vol. 39, no 12, p. L261-L267Article in journal (Refereed) Published
Abstract [en]

The ratios of photoionization cross sections of the 1 sigma(g) and 1 sigma(u) shells of the N-2 molecule for the vibrational transitions to the nu' = 0 and nu' = 1 core-ionized states in the photon energy region between 440 and 550 eV have been measured. The calculations in the random phase approximation well reproduce the experimental data. The variation of the ratio with photon energy is attributed to the interference modulation that is caused by coherent photoemission from the two atoms, as an analogue of the Young's double-slit experiment. The calculations extended up to 1.8 keV allow connecting the modulation with the onset of transitions to the states of increasing orbital angular momentum which occurs at increasing photon energies and demonstrate that the main contribution to these modulations comes from the alpha continuum states.

Place, publisher, year, edition, pages
2006. Vol. 39, no 12, p. L261-L267
Keywords [en]
photochemistry beamline bl27su, k-shell, ionization, spring-8
Identifiers
URN: urn:nbn:se:kth:diva-15870DOI: 10.1088/0953-4075/39/12/l02ISI: 000239306700002Scopus ID: 2-s2.0-33745084252OAI: oai:DiVA.org:kth-15870DiVA, id: diva2:333912
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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