Spectroscopy of B-13, B-14, B-15 and B-16 using multi-nucleon transfer reactions

New information has been obtained on excited states of the neutron-rich bor on isotopes B-14; B-15 and B-16, using the reactions C-12(C-14,N-12)B-14, C -13(C-14,N-12)B-15 and C-14(C-14,N-12)B-16 at about 24 MeV/A. The mass exce ss of 16B has been measured for the first time, it is 37.08(6) MeV. This me ans that B-16 is unbound by only 0.04(6) MeV. Furthermore, the nucleus B-13 has been investigated with the four reactions O-16(C-14,F-17), C-12(C-14,N -13), C-12(C-13,N-12) and C-12(N-15,O-14). Choosing different target-projec tile combinations, it was possible to populate states with different select ivity. New states are observed in B-13 at excitation energies above the thr eshold for two-neutron decay.