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Energy-Dependent Re...
Energy-Dependent Relative Cross Sections in Carbon 1s Photoionization : Separation of Direct Shake and Inelastic Scattering Effects in Single Molecules
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- Travnikova, Oksana (author)
- Sorbonne Univ, LCPMR, CNRS, UMR7614, Paris, France;LOrme Merisiers, Synchrotron Soleil, F-91192 Gif Sur Yvette, France
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- Patanen, Minna (author)
- Univ Oulu, Fac Sci, Nano & Mol Syst Res Unit, POB 3000, Oulu 90014, Finland
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- Söderström, Johan, 1978- (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Lindblad, Andreas (author)
- Uppsala universitet,Oorganisk kemi,Molekyl- och kondenserade materiens fysik
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- Kas, Joshua J. (author)
- Univ Washington, Dept Phys, Box 351560, Seattle, WA 98195 USA
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- Yila, Fernando D. (author)
- Univ Washington, Dept Phys, Box 351560, Seattle, WA 98195 USA
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- Ceolin, Denis (author)
- LOrme Merisiers, Synchrotron Soleil, F-91192 Gif Sur Yvette, France
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- Marchenko, Tatiana (author)
- Sorbonne Univ, LCPMR, CNRS, UMR7614, Paris, France;LOrme Merisiers, Synchrotron Soleil, F-91192 Gif Sur Yvette, France
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- Goldsztejn, Gildas (author)
- Sorbonne Univ, LCPMR, CNRS, UMR7614, Paris, France
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- Guillemin, Renaud (author)
- Sorbonne Univ, LCPMR, CNRS, UMR7614, Paris, France;LOrme Merisiers, Synchrotron Soleil, F-91192 Gif Sur Yvette, France
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- Journel, Loic (author)
- Sorbonne Univ, LCPMR, CNRS, UMR7614, Paris, France;LOrme Merisiers, Synchrotron Soleil, F-91192 Gif Sur Yvette, France
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- Carroll, Thomas X. (author)
- Keuka Coll, Div Nat Sci, Keuka Pk, NY 14478 USA
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- Borve, Knut J. (author)
- Univ Bergen, Dept Chem, Allegaten 41, NO-5007 Bergen, Norway
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- Decleva, Piero (author)
- Univ Trieste, Dipartimento Sci Chim & Farmaceut, I-34127 Trieste, Italy;CNR, IOM, I-34127 Trieste, Italy
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- Rehr, John J. (author)
- Univ Washington, Dept Phys, Box 351560, Seattle, WA 98195 USA
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- Mårtensson, Nils, 1949- (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Simon, Marc (author)
- Sorbonne Univ, LCPMR, CNRS, UMR7614, Paris, France;LOrme Merisiers, Synchrotron Soleil, F-91192 Gif Sur Yvette, France
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- Svensson, Svante, 1947- (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Saethre, Leif J. (author)
- Univ Bergen, Dept Chem, Allegaten 41, NO-5007 Bergen, Norway
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(creator_code:org_t)
- 2019-08-06
- 2019
- English.
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In: Journal of Physical Chemistry A. - : AMER CHEMICAL SOC. - 1089-5639 .- 1520-5215. ; 123:35, s. 7619-7635
- Related links:
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http://jultika.oulu....
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- We demonstrate that the possibility of monitoring relative photoionization cross sections over a large photon energy range allows us to study and disentangle shake processes and intramolecular inelastic scattering effects. In this gas-phase study, relative intensities of the carbon 1s photoelectron lines from chemically inequivalent carbon atoms in the same molecule have been measured as a function of the incident photon energy in the range of 300-6000 eV. We present relative cross sections for the chemically shifted carbon 1s lines in the photoelectron spectra of ethyl trifluoroacetate (the "ESCA" molecule). The results are compared with those of methyl trifluoroacetate and S-ethyl trifluorothioacetate as well as a series of chloro-substituted ethanes and 2-butyne. In the soft X-ray energy range, the cross sections show an extended X-ray absorption fine structure type of wiggles, as was previously observed for a series of chloroethanes. The oscillations are damped in the hard X-ray energy range, but deviations of cross-section ratios from stoichiometry persist, even at high energies. The current findings are supported by theoretical calculations based on a multiple scattering model. The use of soft and tender X-rays provides a more complete picture of the dominant processes accompanying photoionization. Such processes reduce the main photoelectron line intensities by 20-60%. Using both energy ranges enabled us to discern the process of intramolecular inelastic scattering of the outgoing electron, whose significance is otherwise difficult to assess for isolated molecules. This effect relates to the notion of the inelastic mean free path commonly used in photoemission studies of clusters and condensed matter.
Subject headings
- NATURVETENSKAP -- Kemi -- Teoretisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Theoretical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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Travnikova, Oksa ...
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Patanen, Minna
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Söderström, Joha ...
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Lindblad, Andrea ...
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Kas, Joshua J.
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Yila, Fernando D ...
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show more...
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Ceolin, Denis
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Marchenko, Tatia ...
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Goldsztejn, Gild ...
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Guillemin, Renau ...
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Journel, Loic
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Carroll, Thomas ...
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Borve, Knut J.
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Decleva, Piero
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Rehr, John J.
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Mårtensson, Nils ...
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Simon, Marc
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Svensson, Svante ...
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Saethre, Leif J.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Theoretical Chem ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
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Uppsala University