^{14}Be (p , n)^{14}B reaction at 69 MeV in inverse kinematics
Abstract
A GamowTeller (GT) transition from the dripline nucleus ^{14}Be to ^{14}B was studied via the (p , n) reaction in inverse kinematics using a secondary ^{14}Be 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 ^{14}B, 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 GTtransition strength is deduced. The value is found to compare well with that reported in a βdelayed neutron emission study.
 Publication:

Physics Letters B
 Pub Date:
 March 2011
 DOI:
 10.1016/j.physletb.2011.02.045
 arXiv:
 arXiv:1102.3585
 Bibcode:
 2011PhLB..697..459S
 Keywords:

 GamowTeller transition;
 <SUP>1</SUP>H(<SUP>14</SUP>Be;
 <SUP>13</SUP>B + n);
 Unbound states;
 Distortedwave approximation;
 Nuclear Experiment
 EPrint:
 5 pages, 2 figures