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

Abstract

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 (CF 4), ethane (C 2H 6) and 1,1-difluoroethylene (C 2H 2F 2). 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 CF 4. 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.

Authors:
 [1];  [2];  [3];  [3];  [4];  [4];  [3];  [4];  [3];  [3];  [3];  [3];  [3];  [5];  [5];  [5];  [5];  [6];  [6];  [3] more »;  [6];  [4];  [3];  [4];  [5];  [4];  [7];  [3] « less
  1. Goethe Univ., Frankfurt (Germany); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. California State Univ. Maritime Academy, Vallejo, CA (United States)
  3. Goethe Univ., Frankfurt (Germany)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. Auburn Univ., AL (United States)
  6. Kansas State Univ., Manhattan, KS (United States)
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Davis, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS) (SC-27); German Academic Exchange Service (DAAD) (Germany); German Research Foundation (DFG)
OSTI Identifier:
1379094
Alternate Identifier(s):
OSTI ID: 1238298
Grant/Contract Number:  
AC02-05CH11231; FG02-10ER16146; FG02-86ER13491
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. B, Atomic, Molecular and Optical Physics
Additional Journal Information:
Journal Volume: 49; Journal Issue: 5; Journal ID: ISSN 0953-4075
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

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., and Williams, J. B. Molecular frame photoelectron angular distributions for core ionization of ethane, carbon tetrafluoride and 1,1-difluoroethylene. United States: N. p., 2016. Web. doi:10.1088/0953-4075/49/5/055203.
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. Molecular frame photoelectron angular distributions for core ionization of ethane, carbon tetrafluoride and 1,1-difluoroethylene. United States. doi:10.1088/0953-4075/49/5/055203.
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., and Williams, J. B. Mon . "Molecular frame photoelectron angular distributions for core ionization of ethane, carbon tetrafluoride and 1,1-difluoroethylene". United States. doi:10.1088/0953-4075/49/5/055203. https://www.osti.gov/servlets/purl/1379094.
@article{osti_1379094,
title = {Molecular frame photoelectron angular distributions for core ionization of ethane, carbon tetrafluoride and 1,1-difluoroethylene},
author = {Menssen, A. and Trevisan, C. S. and Schöffler, M. S. and Jahnke, T. and Bocharova, I. and Sturm, F. and Gehrken, N. and Gaire, B. and Gassert, H. and Zeller, S. and Voigtsberger, J. and Kuhlins, A. and Trinter, F. and Gatton, A. and Sartor, J. and Reedy, D. and Nook, C. and Berry, B. and Zohrabi, M. and Kalinin, A. and Ben-Itzhak, I. and Belkacem, A. and Dörner, R. and Weber, T. and Landers, A. L. and Rescigno, T. N. and McCurdy, C. W. and Williams, J. B.},
abstractNote = {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.},
doi = {10.1088/0953-4075/49/5/055203},
journal = {Journal of Physics. B, Atomic, Molecular and Optical Physics},
number = 5,
volume = 49,
place = {United States},
year = {2016},
month = {2}
}

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