On the extraction of weak transition strengths via the (3He,t) reaction at 420 MeV

Details On the extraction of weak transition strengths via the (3He,t) reaction at 420 MeV On the extraction of weak transition strengths via the (3He,t) reaction at 420 MeV

2007-07-19

arxiv.org/abs/0707.2840v2

Phys. Rev. Lett. 99, 202501 (2007)

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.99.202501

Differential cross sections for transitions of known weak strength were measured with the (3He,t) reaction at 420 MeV on targets of 12C, 13C, 18O, 26Mg, 58Ni, 60Ni, 90Zr, 118Sn, 120Sn and 208Pb. Using this data, it is shown the proportionalities between strengths and cross sections for this probe follow simple trends as a function of mass number. These trends can be used to confidently determine Gamow-Teller strength distributions in nuclei for which the proportionality cannot be calibrated via beta-decay strengths. Although theoretical calculations in distorted-wave Born approximation overestimate the data, they allow one to understand the main experimental features and to predict deviations from the simple trends observed in some of the transitions.

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