uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Photon-energy dependence of single-photon simultaneous core ionization and core excitation in CO2
Univ Paris 06, Univ Paris 04, CNRS, LCP MR UMR 7614, 11 Rue Pierre & Marie Curie, F-75231 Paris 05, France..
Univ Paris 06, Univ Paris 04, CNRS, LCP MR UMR 7614, 11 Rue Pierre & Marie Curie, F-75231 Paris 05, France..
Univ Paris 06, Univ Paris 04, CNRS, LCP MR UMR 7614, 11 Rue Pierre & Marie Curie, F-75231 Paris 05, France..
Univ Paris 06, Univ Paris 04, CNRS, LCP MR UMR 7614, 11 Rue Pierre & Marie Curie, F-75231 Paris 05, France..
Show others and affiliations
2016 (English)In: PHYSICAL REVIEW A, ISSN 2469-9926, Vol. 94, no 1, 013416Article in journal (Refereed) PublishedText
Abstract [en]

We have studied the K-2V process corresponding to simultaneous K-shell ionization and K-shell excitation in the CO2 molecule. We define these K-2V states as super shake-up, at variance with the "conventional" K(-1)v(-1)V shake-up states. While the nature and evolution with photon energy of the conventional shake-up satellites has been the object of many studies, no such data on a large photon-energy range were previously reported on super shake-up. The CO2 molecule is a textbook example because it exhibits two well-isolated K-2V resonances (with V being 2 pi(u)* and 5 delta g*) with different symmetries resulting from shake-up processes of different origin populated in comparable proportions. The variation of the excitation cross section of these two resonances with photon energy is reported, using two different experimental approaches, which sheds light on the excitation mechanisms. Furthermore, double-core-hole spectroscopy is shown to be able to integrate and even expand information provided by conventional single-core-hole X-ray Photoelectron Spectroscopy (XPS) and Near-Edge X-ray Absorption Fine Structure (NEXAFS) techniques, revealing, for instance, g-g dipole forbidden transitions which are only excited in NEXAFS spectra through vibronic coupling.

Place, publisher, year, edition, pages
2016. Vol. 94, no 1, 013416
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-301018DOI: 10.1103/PhysRevA.94.013416ISI: 000380095500008OAI: oai:DiVA.org:uu-301018DiVA: diva2:953386
Available from: 2016-08-17 Created: 2016-08-17 Last updated: 2016-08-17Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Piancastelli, Maria Novella
By organisation
Molecular and condensed matter physics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 80 hits
ReferencesLink to record
Permanent link

Direct link