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17B (1993TI07)

(Not illustrated)

17B was observed in the 4.8 GeV proton bombardment of Uranium: it is particle stable and its ground state probably has Jπ = 3/2- (1974BO05, 1986AJ04) in agreement with the shell model (1992WA22). It has been observed in several heavy ion reactions (1987GI05, 1988DU09, 1988SA04, 1988TA1N, 1988WO09, 1989LE16). The atomic mass was measured to be 42.82 ± 0.80 MeV (1987GI05), 43.62 ± 0.17 MeV (1988WO09), and 43.90 ± 0.23 MeV (1991OR01), which compare well with the predicted mass of 43.31 ± 0.50 MeV (1988WA18). See also (1986AN07). The half life has been measured to be T1/2 = 5.3 ± 0.6 msec (1988SA04), 5.08 ± 0.05 msec (1988DU09), and 5.9 ± 3.0 msec (1991RE02). Beta-delayed multi-neutron emission has been observed and branching ratios have been measured (1988DU09, 1989LE16, 1991RE02).

A model of 17B considered as a three-body system composed of a 15B core and two outside neutrons was studied by (1990RE16). The binding energy and radius were calculated. Shell model interactions in the cross-shell model space connecting the 0p and 1s0d shells were applied in the A = 15 - 20 Boron isotopes by (1992WA22).