Measurement of DNA double-strand break yield in human cancer cells by high-current, short-duration bunches of laser-accelerated protons

Akifumi Yogo, Katsutoshi Sato, Masaharu Nishikino, Takuya Maeda, Hironao Sakaki, Toshihiko Hori, Koichi Ogura, Mamiko Nishiuchi, Teruki Teshima, Hiroaki Nishimura, Kiminori Kondo, Paul R. Bolton, Shunichi Kawanishi

Research output: Contribution to journalArticlepeer-review

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Abstract

To investigate the radiobiological effects of high dose rates that are attributed to high current, short bunch beam generation with laser-dreven ion acceleration, we have developed an experimental setup that uses laser-accelerated protons. In-vitro human lung cancer cells: A549 pulmonary adenocarcinoma are irradiated with a laser-accelerated proton bunches with a duration of 2 × 10-8 s and flux of ∼1015 cm -2 s-1, amounting to single bunch absorbed dose at the 1 Gy level. The double-strand break (DSB) yield in cell DNA is analyzed for the laser-accelerated proton beam at an average LET of 41 keV/μm.

Original languageEnglish
JournalJapanese Journal of Applied Physics
Volume50
Issue number10 PART 1
DOIs
StatePublished - Oct 2011
Externally publishedYes

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