Ground-state properties of H5 from the He6(d,He3)H5 reaction

Wuosmaa, A. H.; Bedoor, S.; Brown, K. W.; Buhro, W. W.; Chajecki, Z.; Charity, R. J.; Lynch, W. G.; Manfredi, J.; Marley, S. T.; McNeel, D. G.; Newton, A. S.; Shetty, D. V.; Showalter, R. H.; Sobotka, L. G.; Tsang, M. B.; Winkelbauer, J. R.; Wiringa, R. B.

doi:10.1103/PhysRevC.95.014310

Ground-state properties of ${}^{5}H$ from the ${}^{6}{He} (d, {}^{3}{He}) {}^{5}H$ reaction

Journal Article · Sun Jan 01 04:00:00 EST 2017 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.95.014310· OSTI ID:1371922

Wuosmaa, A. H.; Bedoor, S.; Brown, K. W.; Buhro, W. W.; Chajecki, Z.; Charity, R. J.; Lynch, W. G.; Manfredi, J.; Marley, S. T.; McNeel, D. G.; Newton, A. S.; Shetty, D. V.; Showalter, R. H.; Sobotka, L. G.; Tsang, M. B.; Winkelbauer, J. R.; Wiringa, R. B.

We have studied the ground state of the unbound, very neutron-rich isotope of hydrogen 5H, using the 6He(d,3He)5H reaction in inverse kinematics at a bombarding energy of E(6He)=55A MeV. The present results suggest a ground-state resonance energy ER=2.4±0.3 MeV above the 3H+2n threshold, with an intrinsic width of Γ=5.3±0.4 MeV in the 5H system. Both the resonance energy and width are higher than those reported in some, but not all previous studies of 5H. The previously unreported 6He(d,t)5Heg.s. reaction is observed in the same measurement, providing a check on the understanding of the response of the apparatus. The data are compared to expectations from direct two-neutron and dineutron decay. The possibility of excited states of 5H populated in this reaction is discussed using different calculations of the 6He→5H+p spectroscopic overlaps from shell-model and ab initio nuclear-structure calculations.

Research Organization:: Argonne National Laboratory (ANL)

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

DOE Contract Number:: AC02-06CH11357

OSTI ID:: 1371922

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 1 Vol. 95; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

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