Charge-exchange products of Bevalac projectiles

Here the author reexamines some of the earliest Bevalac work, the classic studies of projectile fragmentation by Dr. Harry Heckman's group using a small-angle magnetic spectrometer. Recall their main finding that there is a substantial production of fragments of all masses lighter than the projectile, such fragments being centered in a narrow region of velocity space around the beam velocity. The author directs attention here to the rather rare fragments of the same mass number as the projectile but differing in charge by one unit. He also keeps track, as a frame of reference, of the products that have lost one neutron from the projectile