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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

7 Scopus citations

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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