Comprehensive database of track-structure simulations on DNA damage by H–Fe ions up to 1 GeV/u for space radiation biology

Researchers have utilized the PARTRAC simulation platform to generate a comprehensive database detailing how various high-energy space radiation particles impact DNA. By modeling ions ranging from hydrogen to iron at energies up to 1 GeV/u, the study fills critical gaps where experimental data has historically been limited. The findings demonstrate that as ionization density rises, there is a marked increase in complex, difficult-to-repair DNA lesions and fragmented genetic material. Furthermore, the simulations provide a scientific explanation for inconsistencies in previous experimental results by identifying variables in detection and analysis techniques. These results suggest that high-charge particles create distinct, continuous patterns of damage that are significantly more severe than those caused by lower-energy radiation. This new dataset serves as an essential resource for improving biological risk assessments for future long-duration space exploration.

This research provides a vital predictive tool for understanding the long-term health risks astronauts face from cosmic radiation during deep-space missions.