14Be(p,n)14B reaction at 69 MeV in inverse kinematics

Details 14Be(p,n)14B reaction at 69 MeV in inverse kinematics 14Be(p,n)14B reaction at 69 MeV in inverse kinematics

2011-02-17

arxiv.org/abs/1102.3585v2

Phys.Lett.B697:459-462,2011

Physics

Nuclear Physics

Nuclear Experiment

5 pages, 2 figures

Scientific paper

10.1016/j.physletb.2011.02.045

A Gamow-Teller (GT) transition from the drip-line nucleus 14Be to 14B was studied via the (p,n) reaction in inverse kinematics using a secondary 14Be beam at 69 MeV/nucleon. The invariant mass method is employed to reconstruct the energy spectrum. A peak is observed at an excitation energy of 1.27(2) MeV in 14B, together with bumps at 2.08 and 4.06(5) MeV. The observed forward peaking of the state at 1.27 MeV and a good description for the differential cross section, obtained with a DWBA calculation provide support for the 1+ assignment to this state. By extrapolating the cross section to zero momentum transfer the GT-transition strength is deduced. The value is found to compare well with that reported in a beta-delayed neutron emission study.

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