The Structure of 7He
Frontiers in Nuclear Strucutre, Astrophysics, and Reactions: Finustar 2(2008)
Abstract
We have studied the properties of the unbound isotope of helium 7He, using the 2H(8Li,3He)7He reaction. When combined with prior measurements of the 2H(6He,p)7He reaction the data present a consistent picture for the low‐lying excited states of 7He, specifically the negative parity sequence 3/2− (ground state) 1/2− (first‐excited) and 5/2− (second‐excited). The shapes but not the absolute magnitudes of the angular distributions are reproduced by ab‐initio theory coupled with a DWBA reaction framework.
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Key words
ground state,excited states
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