(6Li,6He) reaction at 100 MeV/nucleon as a probe of spin-excitation strengths

H. Ueno, Y. Fujita, H. Fujita, T. Shinada, Y. Kanzaki, M. Yosoi, A. Tamii, K. Takahisa, F. Ihara, H. Kohri, T. Yamagata, K. Katori

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For a selective excitation of spin-flip strength, (6Li,6He) reactions can be a useful tool, because: a) 6Li and 6He have ground-state spin and parity values Jπ = 1+ and 0+, respectively; b) 6He has no particle-stable excited state, thus effects from ejectile excitation can be avoided. The (6Li,6He) experiments were performed at 100 MeV/nucleon, at which incident energy the reaction is expected to be single-step dominant. Through the analysis of the good-resolution (6Li,6He) data on 13C, 26Mg, 27Al and 58Ni targets, the evidence for a proportional relationship between 0° cross sections and the corresponding Gamow-Teller transition strengths is examined. Suppression of non-spin flip excitations is discussed based on the hindrance of the excitation of the isobaric analog state.

Original languageEnglish
Pages (from-to)67-73
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-4
StatePublished - 1999
Externally publishedYes


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