Abstract
The ultrashort duration of laser-driven multi-MeV ion bursts offers the possibility of radiobiological studies at extremely high dose rates. Employing the TARANIS Terawatt laser at Queen's University, the effect of proton irradiation at MeV-range energies on live cells has been investigated at dose rates exceeding 109 Gy/s as a single exposure. A clonogenic assay showed consistent lethal effects on V-79 live cells, which, even at these dose rates, appear to be in line with previously published results employing conventional sources. A Relative Biological Effectiveness (RBE) of 1.4±0.2 at 10% survival is estimated from a comparison with a 225 kVp X-ray source.
| Original language | English |
|---|---|
| Article number | 011209 |
| Number of pages | 6 |
| Journal | AIP Advances |
| Volume | 2 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Mar 2012 |
ASJC Scopus subject areas
- General Physics and Astronomy