Molecular frame photoelectron angular distributions for core ionization of ethane, carbon tetrafluoride and 1,1-difluoroethylene

Menssen, A.; Trevisan, C. S.; Schöffler, M. S.; Jahnke, T.; Bocharova, I.; Sturm, F.; Gehrken, N.; Gaire, B.; Gassert, H.; Zeller, S.; Voigtsberger, J.; Kuhlins, A.; Trinter, F.; Gatton, A.; Sartor, J.; Reedy, D.; Nook, C.; Berry, B.; Zohrabi, M.; Kalinin, A.; Ben-Itzhak, I.; Belkacem, A.; Dörner, R.; Weber, T.; Landers, A. L.; Rescigno, T. N.; McCurdy, C. W.; Williams, J. B.

doi:10.1088/0953-4075/49/5/055203

Title: Molecular frame photoelectron angular distributions for core ionization of ethane, carbon tetrafluoride and 1,1-difluoroethylene

Journal Article · Mon Feb 15 00:00:00 EST 2016 · Journal of Physics. B, Atomic, Molecular and Optical Physics

DOI:https://doi.org/10.1088/0953-4075/49/5/055203· OSTI ID:1379094

Menssen, A. ^[1]; Trevisan, C. S. ^[2]; Schöffler, M. S. ^[3]; Jahnke, T. ^[3]; Bocharova, I. ^[4]; Sturm, F. ^[4]; Gehrken, N. ^[3]; Gaire, B. ^[4]; Gassert, H. ^[3]; Zeller, S. ^[3]; Voigtsberger, J. ^[3]; Kuhlins, A. ^[3]; Trinter, F. ^[3]; Gatton, A. ^[5]; Sartor, J. ^[5]; Reedy, D. ^[5]; Nook, C. ^[5]; Berry, B. ^[6]; Zohrabi, M. ^[6]; Kalinin, A. ^[3] more »

Goethe Univ., Frankfurt (Germany); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
California State Univ. Maritime Academy, Vallejo, CA (United States)
Goethe Univ., Frankfurt (Germany)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Auburn Univ., AL (United States)
Kansas State Univ., Manhattan, KS (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Davis, CA (United States)

Molecular frame photoelectron angular distributions (MFPADs) are measured in this paper in electron–ion momentum imaging experiments and compared with complex Kohn variational calculations for carbon K-shell ionization of carbon tetrafluoride (CF₄), ethane (C₂H₆) and 1,1-difluoroethylene (C₂H₂F₂). While in ethane the polarization averaged MFPADs show a tendency at low energies for the photoelectron to be emitted in the directions of the bonds, the opposite effect is seen in CF₄. A combination of these behaviors is seen in difluoroethylene where ionization from the two carbons can be distinguished experimentally because of their different K-shell ionization potentials. Excellent agreement is found between experiment and simple static-exchange or coupled two-channel theoretical calculations. Finally, however, simple electrostatics do not provide an adequate explanation of the suggestively simple angular distributions at low electron ejection energies.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS); German Academic Exchange Service (DAAD) (Germany); German Research Foundation (DFG); USDOE Office of Science (SC), Office of Workforce Development for Teachers & Scientists (WDTS)

Grant/Contract Number:: AC02-05CH11231; FG02-10ER16146; FG02-86ER13491

OSTI ID:: 1379094

Alternate ID(s):: OSTI ID: 1238298

Journal Information:: Journal of Physics. B, Atomic, Molecular and Optical Physics, Vol. 49, Issue 5; ISSN 0953-4075

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 11 works

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