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Title: Two-Particle Interference of Electron Pairs on a Molecular Level

Abstract

Here, wWe investigate the photodouble ionization of H 2 molecules with 400 eV photons. We find that the emitted electrons do not show any sign of two-center interference fringes in their angular emission distributions if considered separately. Conversely, the quasiparticle consisting of both electrons (i.e., the "dielectron") does. The work highlights the fact that nonlocal effects are embedded everywhere in nature where many-particle processes are involved.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [3];  [3];  [4];  [4];  [5];  [1];  [1];  [6];  [7];  [5];  [8];  [9];  [10];  [1] more »;  [1];  [1] « less
  1. Goethe Univ., Frankfurt (Germany). Inst. for Nuclear Physics
  2. Univ. of Kassel (Germany)
  3. Univ. of Hamburg (Germany). Inst. for Experimental Physics
  4. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
  6. Max Born Inst., Berlin (Germany)
  7. RIKEN, Saitama (Japan)
  8. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division; Univ. of California, Davis, CA (United States). Dept. of Chemistry
  9. Autonomous Univ. of Madrid (Spain). Dept. of Chemistry, Condensed Matter Physics Center (IFIMAC); Madrid Institute of Advanced Studies in Nanoscience, Madrid (Spain)
  10. Univ. of Nevada, Reno, NV (United States). Dept. of Physics
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)
OSTI Identifier:
1379565
Grant/Contract Number:
AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 8; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Waitz, M., Metz, D., Lower, J., Schober, C., Keiling, M., Pitzer, M., Mertens, K., Martins, M., Viefhaus, J., Klumpp, S., Weber, T., Schmidt-Böcking, H., Schmidt, L. Ph. H., Morales, F., Miyabe, S., Rescigno, T. N., McCurdy, C. W., Martín, F., Williams, J. B., Schöffler, M. S., Jahnke, T., and Dörner, R. Two-Particle Interference of Electron Pairs on a Molecular Level. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.117.083002.
Waitz, M., Metz, D., Lower, J., Schober, C., Keiling, M., Pitzer, M., Mertens, K., Martins, M., Viefhaus, J., Klumpp, S., Weber, T., Schmidt-Böcking, H., Schmidt, L. Ph. H., Morales, F., Miyabe, S., Rescigno, T. N., McCurdy, C. W., Martín, F., Williams, J. B., Schöffler, M. S., Jahnke, T., & Dörner, R. Two-Particle Interference of Electron Pairs on a Molecular Level. United States. doi:10.1103/PhysRevLett.117.083002.
Waitz, M., Metz, D., Lower, J., Schober, C., Keiling, M., Pitzer, M., Mertens, K., Martins, M., Viefhaus, J., Klumpp, S., Weber, T., Schmidt-Böcking, H., Schmidt, L. Ph. H., Morales, F., Miyabe, S., Rescigno, T. N., McCurdy, C. W., Martín, F., Williams, J. B., Schöffler, M. S., Jahnke, T., and Dörner, R. Mon . "Two-Particle Interference of Electron Pairs on a Molecular Level". United States. doi:10.1103/PhysRevLett.117.083002. https://www.osti.gov/servlets/purl/1379565.
@article{osti_1379565,
title = {Two-Particle Interference of Electron Pairs on a Molecular Level},
author = {Waitz, M. and Metz, D. and Lower, J. and Schober, C. and Keiling, M. and Pitzer, M. and Mertens, K. and Martins, M. and Viefhaus, J. and Klumpp, S. and Weber, T. and Schmidt-Böcking, H. and Schmidt, L. Ph. H. and Morales, F. and Miyabe, S. and Rescigno, T. N. and McCurdy, C. W. and Martín, F. and Williams, J. B. and Schöffler, M. S. and Jahnke, T. and Dörner, R.},
abstractNote = {Here, wWe investigate the photodouble ionization of H2 molecules with 400 eV photons. We find that the emitted electrons do not show any sign of two-center interference fringes in their angular emission distributions if considered separately. Conversely, the quasiparticle consisting of both electrons (i.e., the "dielectron") does. The work highlights the fact that nonlocal effects are embedded everywhere in nature where many-particle processes are involved.},
doi = {10.1103/PhysRevLett.117.083002},
journal = {Physical Review Letters},
number = 8,
volume = 117,
place = {United States},
year = {Mon Aug 15 00:00:00 EDT 2016},
month = {Mon Aug 15 00:00:00 EDT 2016}
}

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  • We report the energy and angular distribution of electron double differential cross sections (DDCS) in collision of 6-MeV/u C{sup 6+} ions with molecular hydrogen. We explain the observed distributions in terms of the two-center effect and the Young-type interference effect. The secondary electrons having energies between 1 and 1000 eV are detected at about 10 different emission angles between 30 degree sign and 150 degree sign . The measured data are compared with the state-of-the-art continuum distorted wave-eikonal initial state and the first Born model calculations which use molecular wave function. The single differential cross sections are derived and comparedmore » with the theoretical predictions. The oscillations due to the interference effect are derived in the DDCS ratios using theoretical cross sections for the atomic H target. The effect of the atomic parameters on the observed oscillations is discussed. An evidence of interference effect has also been shown in the single differential cross section. The electron energy dependence of the forward-backward asymmetry parameter shows a monotonically increasing behavior for an atomic target, such as He, which could be explained in terms of the two-center effect only. In contrast, for the molecular H{sub 2} the asymmetry parameter reveals an oscillatory behavior due to the Young-type interference effect superimposed with the two-center effect. The asymmetry parameter technique provides a self-normalized method to reveal the interference oscillation which does not require either a theoretical model or complementary measurements on the atomic H target.« less
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