Charge-state distribution of Li ions from the β decay of laser-trapped He6 atoms

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.

doi:10.1103/PhysRevA.96.053411

Charge-state distribution of Li ions from the $β$ decay of laser-trapped ${}^{6}{He}$ atoms

Journal Article · Mon Nov 13 00:00:00 EST 2017 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.96.053411· OSTI ID:1421952

Hong, R. ^[1]; Leredde, A. ^[2]; Bagdasarova, Y. ^[3]; Flechard, X. ^[4]; Garcia, A. ^[3]; Knecht, A. ^[3]; Muller, P. ^[2]; Naviliat-Cuncic, O. ^[5]; Pedersen, J. ^[3]; Smith, E. ^[3]; Sternberg, M. ^[3]; Storm, D. W. ^[3]; Swanson, H. E. ^[3]; Wauters, F. ^[3]; Zumwalt, D. ^[3]

Univ. of Washington, Seattle, WA (United States). Center for Experimental Nuclear Physics and Astrophysics; Argonne National Lab. (ANL), Argonne, IL (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Univ. of Washington, Seattle, WA (United States). Center for Experimental Nuclear Physics and Astrophysics
Normandie University, ENSICAEN, UNICAEN, CNRS/IN2P3, Caen (France)
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy

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.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: AC02-06CH11357; FG02-97ER41020

OSTI ID:: 1421952

Alternate ID(s):: OSTI ID: 1408553

Journal Information:: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 96; ISSN PLRAAN; ISSN 2469-9926

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Electron shakeoff following the β + decay of Ne + 19 and Ar + 35 trapped ions Fabian, X.; Fléchard, X.; Pons, B. Physical Review A, Vol. 97, Issue 2 https://doi.org/10.1103/physreva.97.023402	journal	February 2018