Deoxyribonucleic acid (DNA) is an important biomacromolecule. It is a carrier of genetic information and a critical target for radiobiological effects. Numerous lesions have been identified in irradiated DNA. DNA double strand breaks (DSBs) are considered as the most important initial damage of all biological effects induced by ionizing radiation. In this experiment, DNA DSBs induced by heavy ions in the early period were investigated with atomic force microscopy (AFM). Choosing Li-7 and C-12 heavy ions with different LET values delivered by HI-13 tandem accelerator respectively, purified plas...
