Zegers RGT, Meharchand R, Shimbara Y, Austin SM, Bazin D, Brown BA, Diget CA, Gade A, Guess CJ, Hausmann M, Hitt GW, Howard ME, King M, Miller D, Noji S, Signoracci A, Starosta K, Tur C, Vaman C, Voss P, Weisshaar D, Yurkon J. 34P(7Li,7Be+γ) reaction at 100A MeV in inverse kinematics.
PHYSICAL REVIEW LETTERS 2010;
104:212504. [PMID:
20867091 DOI:
10.1103/physrevlett.104.212504]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2010] [Indexed: 05/29/2023]
Abstract
We report on the first successful extraction of a β+ Gamow-Teller strength distribution from a radioactive isotope in an intermediate-energy charge-exchange experiment in inverse kinematics. The (7Li,7Be+γ(429 keV)) reaction at 100A MeV was used to measure Gamow-Teller transition strengths from 34P to states in 34Si. The results show that little mixing occurs between sd and pf shell configurations for the low-lying 0+ and 2+ states even though 34Si neighbors the island of inversion and low-lying 2ℏω intruder states exist. Shell-model calculations in the sdpf model space are consistent with these findings.
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