First study of the $^8$Li(t,p)$^{10}$Li and $^{12}$B(t,p)$^{14}$B reactions

ORAL

Abstract

We report on studies of $^{12}$B(t,p)$^{14}$B and $^8$Li(t,p)$^{10}$Li reactions in inverse kinematics with HELIOS at Argonne National Laboratory. Two-neutron transfer reactions can populate states inaccessible to single-nucleon transfer. States in $^{14}$B and $^{10}$Li with strong sd$^2$ character can provide new information about the about the changing nature of the p-sd splitting in this mass region that is important, for example, in understanding the disappearance of the N=8 shell gap suggested in $^{12}$Be. For the unbound levels, small single-neutron spectroscopic factors for sd$^2$ levels can make these states much narrower than the single-particle states at lower excitation energy. Secondary $^{12}$B and $^8$Li beams produced using the RAISOR separator at the ATLAS facility at Argonne National Laboratory bombarded a $^3$H target consisting of $^3$H adsorbed into a 450 $μ$g/cm$^2$ Ti foil. Protons and recoiling nuclei were detected using silicon-detector arrays in HELIOS. The experimental results will be compared to the predictions of shell-model calculations.

*This research was supported by the US Department of Energy, Office of Nuclear Physics, under Grants No. DESC0014552, (UConn), No. DE-FG02-96ER40978 (LSU), and No. DE-AC02-06CH11357 (ANL).

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Presenters

  • Alan H Wuosmaa

    • University of Connecticut

Authors

  • Alan H Wuosmaa

    • University of Connecticut

  • Daniel G McNeel

    • Los Alamos National Laboratory

  • Jie Chen

    • Argonne National Laboratory

  • Roderick M Clark

    • Lawrence Berkeley National Laboratory

  • Heather L Crawford

    • Lawrence Berkeley National Laboratory

  • Catherine M Deibel

    • Louisiana State University

  • Calem Hoffman

    • Argonne National Laboratory

  • Robert V Janssens

    • University of North Carolina at Chapel Hill
    • University of North Carolina at Chapel Hill, TUNL

  • Benjamin Kay

    • Argonne National Laboratory

  • Sean A Kuvin

    • Los Alamos National Laboratory

  • Scott T Marley

    • Louisiana State University

  • Augusto Macchiavelli

    • Oak Ridge National Laboratory

  • John P Schiffer

    • Argonne National Laboratory

  • Tsz Leung Tang

    • Florida State University

  • David K Sharp

    • University of Manchester

  • Jeremy W Smith

    • University of Connecticut

  • Gemma L Wilson

    • Louisiana State University