title: Dipole excitation of alpha clusters in (6)Li and (7)Li.
abstract: Dipole excitations in highly excited energy regions of (6)He and (7)He nuclei were investigated via the ((7)Li,(7)Be) reaction with an incident energy of 65A MeV at forward scattering angles. The resonances at Q approximately equal to -30 MeV observed commonly for both (6)Li and (7)Li targets were found to be excited via both spin-flip and spin-nonflip transitions with DeltaL = 1. Based on the observed excitation energy, width, and cross section of each resonance, the relevant resonances are inferred to be analogs of the dipole resonances of alpha clusters in the (6)Li and (7)Li nuclei.
authors.affiliation: Department of Physics, University of Tokushima, Tokushima 770-8502, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Nakayama
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authors.initials: T
authors.lastname: Yamagata
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authors.initials: H
authors.lastname: Akimune
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authors.lastname: Daito
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authors.initials: H
authors.lastname: Fujimura
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authors.lastname: Fujita
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authors.lastname: Fujiwara
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authors.lastname: Fushimi
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authors.lastname: Greenfield
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authors.lastname: Kohri
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authors.lastname: Koori
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authors.lastname: Takahisa
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authors.lastname: Tamii
authors.forename: M
authors.initials: M
authors.lastname: Tanaka
authors.forename: H
authors.initials: H
authors.lastname: Toyokawa