Stretched states in B 12 , 13 with the ( d , α ) reaction
2014
The $(d,\ensuremath{\alpha})$ reaction is highly selective, favoring final states in which the removed neutron and proton are completely aligned in a $J=2j$ configuration. We have studied the $^{14,15}\mathrm{C}(d,\ensuremath{\alpha})^{12,13}\mathrm{B}$ reactions in inverse kinematics using the Helical Orbit Spectrometer (HELIOS) at Argonne National Laboratory. In $^{12}\mathrm{B}$, the reaction strongly favors the population of a known ${3}^{+}$ state at 5.61 MeV, and for $^{13}\mathrm{B}$, we observe a possible unreported doublet of states at high excitation energy, probably corresponding to the $^{12}\mathrm{B}({3}^{+})$ state coupled to the $1{s}_{1/2}$ neutron from the $^{15}\mathrm{C}$ ground state. In contrast to single-nucleon transfer, deuteron-transfer reactions have not been widely studied with exotic nuclei.
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