Dose Effects of N+ ion beam irradiation-induced damage to 5'-amp and its components

摘要

Damage to solid 5'-AMP and its components adenine (A) and adenosine (AR0 irradiated by an N+ ion beam with energy of 20-30 keV was studied in the paper. it was found that their residual activities were not influenced by t treatments of acid and alkali, but were changed by further heat treatment and were related to the samples' weight. For the multi-hit phenomenon of ion beam irradiation, the yield of the optical activity-damaged base A. G(-A), was reduced by at least several dozen times compared to the theoretical value. In addition, almost no free base A which was released from the original damage of the irradiate AR was measured.