The beta decay half-lives of seven neutron-rich isotopes, ${}_{}{}^9{}_{}{}^{}\mathrm{Li}$, ${}_{}{}^{12}{}_{}{}^{}\mathrm{B}$, ${}_{}{}^{13}{}_{}{}^{}\mathrm{B}$, ${}_{}{}^{15}{}_{}{}^{}\mathrm{B}$, ${}_{}{}^{17}{}_{}{}^{}\mathrm{B}$, ${}_{}{}^{17}{}_{}{}^{}\mathrm{C}$, and ${}_{}{}^{19}{}_{}{}^{}\mathrm{N}$, have been measured. The isotopes were produced by bombarding a tantalum target with a ${}_{}{}^{22}{}_{}{}^{}\mathrm{Ne}$ beam with 35 MeV/nucleon. The isotopes were separated and identified using a reaction product mass separator. The half-life measurement of ${}_{}{}^{17}{}_{}{}^{}\mathrm{B}$, 5.3(6) ms, is the first for this isotope.

• Received 28 September 1987

DOI:https://doi.org/10.1103/PhysRevC.37.1314