title: Analog states of 7He observed via the 6He(p,n) reaction.
abstract: Isobaric analog states of 7He have been investigated by a novel technique involving the observation of the resonant yield of neutrons from the 6He(p,n) reaction in coincidence with gamma rays from the decay of the (0(+),T=1) state in 6Li. The gamma rays provide a clean signature for the isospin-conserving neutron decay of the low-lying isobaric analog resonances. It is conclusively shown that the analog of the recently observed low-lying spin-orbit partner of the 7He ground state does not exist. Evidence is presented that this state lies at much higher energies, in agreement with microscopic calculations.
authors.affiliation: Physics Department, University of Notre Dame, Notre Dame, Indiana 46556, USA. grogache@nd.edu
authors.forename: G V
authors.initials: GV
authors.lastname: Rogachev
authors.forename: P
authors.initials: P
authors.lastname: Boutachkov
authors.forename: A
authors.initials: A
authors.lastname: Aprahamian
authors.forename: F D
authors.initials: FD
authors.lastname: Becchetti
authors.forename: J P
authors.initials: JP
authors.lastname: Bychowski
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: G
authors.initials: G
authors.lastname: Chubarian
authors.forename: P A
authors.initials: PA
authors.lastname: DeYoung
authors.forename: V Z
authors.initials: VZ
authors.lastname: Goldberg
authors.forename: J J
authors.initials: JJ
authors.lastname: Kolata
authors.forename: L O
authors.initials: LO
authors.lastname: Lamm
authors.forename: G F
authors.initials: GF
authors.lastname: Peaslee
authors.forename: M
authors.initials: M
authors.lastname: Quinn
authors.forename: B B
authors.initials: BB
authors.lastname: Skorodumov
authors.forename: A
authors.initials: A
authors.lastname: Wöhr