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arxiv 0807.2402 v1 pith:CVN5ONMO submitted 2008-07-15 nucl-ex

Gamow-Teller strengths in 24Na using the 24Mg(t,3He) reaction at 115 AMeV

M.E. Howard , R.G.T. Zegers , Sam M. Austin , D. Bazin , B.A. Brown , A.L. Cole , B. Davids , M. Famiano
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Y. Fujita A. Gade D. Galaviz G.W. Hitt M. Matos S.D. Reitzner C. Samanta L.J. Schradin Y. Shimbara E.E. Smith C. Simenel
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Gamow-Teller transitions from 24Mg to 24Na were studied via the (t,3He) reaction at 115 AMeV using a secondary triton beam produced via fast fragmentation of 150 AMeV 16O ions. Compared to previous (t,3He) experiments at this energy that employed a primary alpha beam, the secondary beam intensity is improved by about a factor of five. Despite the large emittance of the secondary beam, an excitation-energy resolution of ~200 keV is achieved. A good correspondence is found between the extracted Gamow-Teller strength distribution and those available from other charge-exchange probes. Theoretical calculations using the newly developed USDA and USDB sd-shell model interactions reproduce the data well.

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