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Title: Charge-state distribution of Li ions from the β decay of laser-trapped He 6 atoms

Abstract

The accurate determination of atomic final states following nuclear β decay plays an important role in several experiments. In particular, the charge state distributions of ions following nuclear β decay are important for determinations of the β-ν angular correlation with improved precision. Also, beyond the hydrogenic cases, the decay of neutral 6He presents the simplest case. Our measurement aims at providing benchmarks to test theoretical calculations. The kinematics of Li n+ ions produced following the β decay of 6He within an electric field were measured using 6He atoms in the metastable (1s2s, 3S 1) and (1s2p, 3P 2) states confined by a magneto-optical trap. The electron shakeoff probabilities were deduced, including their dependence on ion energy. Finally, we find significant discrepancies on the fractions of Li ions in the different charge states with respect to a recent calculation.

Authors:
 [1];  [2];  [3];  [4];  [3];  [3];  [2];  [5];  [3];  [3];  [3];  [3];  [3];  [3];  [3]
  1. Univ. of Washington, Seattle, WA (United States). Center for Experimental Nuclear Physics and Astrophysics; Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Univ. of Washington, Seattle, WA (United States). Center for Experimental Nuclear Physics and Astrophysics
  4. Normandie University, ENSICAEN, UNICAEN, CNRS/IN2P3, Caen (France)
  5. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF)
OSTI Identifier:
1421952
Alternate Identifier(s):
OSTI ID: 1408553
Grant/Contract Number:  
AC02-06CH11357; FG02-97ER41020
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 96; Journal Issue: 5; Journal ID: ISSN 2469-9926
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Hong, R., Leredde, A., Bagdasarova, Y., Flechard, X., Garcia, A., Knecht, A., Muller, P., Naviliat-Cuncic, O., Pedersen, J., Smith, E., Sternberg, M., Storm, D.  W., Swanson, H.  E., Wauters, F., and Zumwalt, D. Charge-state distribution of Li ions from the β decay of laser-trapped He6 atoms. United States: N. p., 2017. Web. doi:10.1103/PhysRevA.96.053411.
Hong, R., Leredde, A., Bagdasarova, Y., Flechard, X., Garcia, A., Knecht, A., Muller, P., Naviliat-Cuncic, O., Pedersen, J., Smith, E., Sternberg, M., Storm, D.  W., Swanson, H.  E., Wauters, F., & Zumwalt, D. Charge-state distribution of Li ions from the β decay of laser-trapped He6 atoms. United States. doi:10.1103/PhysRevA.96.053411.
Hong, R., Leredde, A., Bagdasarova, Y., Flechard, X., Garcia, A., Knecht, A., Muller, P., Naviliat-Cuncic, O., Pedersen, J., Smith, E., Sternberg, M., Storm, D.  W., Swanson, H.  E., Wauters, F., and Zumwalt, D. Mon . "Charge-state distribution of Li ions from the β decay of laser-trapped He6 atoms". United States. doi:10.1103/PhysRevA.96.053411. https://www.osti.gov/servlets/purl/1421952.
@article{osti_1421952,
title = {Charge-state distribution of Li ions from the β decay of laser-trapped He6 atoms},
author = {Hong, R. and Leredde, A. and Bagdasarova, Y. and Flechard, X. and Garcia, A. and Knecht, A. and Muller, P. and Naviliat-Cuncic, O. and Pedersen, J. and Smith, E. and Sternberg, M. and Storm, D.  W. and Swanson, H.  E. and Wauters, F. and Zumwalt, D.},
abstractNote = {The accurate determination of atomic final states following nuclear β decay plays an important role in several experiments. In particular, the charge state distributions of ions following nuclear β decay are important for determinations of the β-ν angular correlation with improved precision. Also, beyond the hydrogenic cases, the decay of neutral 6He presents the simplest case. Our measurement aims at providing benchmarks to test theoretical calculations. The kinematics of Lin+ ions produced following the β decay of 6He within an electric field were measured using 6He atoms in the metastable (1s2s,3S1) and (1s2p,3P2) states confined by a magneto-optical trap. The electron shakeoff probabilities were deduced, including their dependence on ion energy. Finally, we find significant discrepancies on the fractions of Li ions in the different charge states with respect to a recent calculation.},
doi = {10.1103/PhysRevA.96.053411},
journal = {Physical Review A},
number = 5,
volume = 96,
place = {United States},
year = {2017},
month = {11}
}

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