[en] He preinjection was found to be essential in nucleating voids in high-purity Al. Interstitial pickup in high-purity V was found to be important even under good vacuum (10-6 to 10-7 torr). Voids were found to form in V down to 2000C. A model was tested against rdiation disordering/ordering in Cu3Au. Disordering in CuPd was studied. A small negative heavy ion source (SNICS) was developed for the tandem accelerator