Production of neutron-rich isotopes from the fragmentation of {sup 28}Si projectiles at {ital p}{sub lab}=14.6 GeV/{ital c} per nucleon

An investigation of the production of neutron-rich isotopes from the fragmentation of {sup 28}Si projectiles at {ital p}{sub lab}=14.6 GeV/{ital c} per nucleon was performed using the BNL-AGS-E814 spectrometer. We have measured the inclusive production cross sections of neutron-rich fragments ({sup 6}He, {sup 8}He, {sup 8}Li, {sup 9}Li, {sup 10}Be, {sup 11}Be, and {sup 13}B). We have also measured the transverse momentum distributions for {sup 6}He and {sup 9}Li, and the forward and transverse energy distributions associated with {sup 6}He production. The momentum distributions were analyzed in the context of the Goldhaber model. The question of whether the fragments are produced in the decay of the projectile following its electromagnetic excitation was also investigated.