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 225kKVp X-ray source.
Original language | English |
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Pages (from-to) | 011209-011215 |
Number of pages | 7 |
Journal | AIP Advances |
Volume | 2 |
Issue number | 1 |
DOIs | |
Publication status | Published - 22 Mar 2012 |