Phys. Rev. C 72, 061301(R) (2005) [5 pages]Search for excited states in 7He with the (d,p) reaction
We have studied the properties of low-lying levels in 7He using the 2H(6He,p)7He reaction at 11.5 MeV/u. This reaction probes the 6Heg.s.+n character of states in 7He. The ground state was populated with a spectroscopic factor comparable to that obtained from ab initio calculations, supporting the tentative spin-parity assignment of 3/2- in the literature. In addition to the ground state, a broad structure is observed between EX=2–3 MeV, the excitation-energy range expected for the 1/2- state in 7He. No evidence was found for a lower-lying, first-excited state reported recently. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.72.061301
DOI:
10.1103/PhysRevC.72.061301
PACS:
21.10.Jx, 21.10.Hw, 25.60.Je, 27.20.+n
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