Spectromicroscopic film dosimetry for high-energy microbeam from synchrotron radiation

Nobuteru Nariyama, Takuji Ohigashi, Keiji Umetani, Kunio Shinohara, Hiroki Tanaka, Akira Maruhashi, Genro Kashino, Ai Kurihara, Takeshi Kondob, Manabu Fukumoto, Koji Ono

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

A microscope with band-pass filters was used to measure the optical-density distribution of GafChromic films irradiated with multi-slit microbeam X-rays. The planar width was 25 μm, and the center-to-center distance was 200 μm. The peak and valley dose rates in air were found to be 120 and 0.7 Gy/s, respectively. In a polymethylmethacrylate phantom, the peak-to-valley dose ratio decreased to 80 at a 1-mm depth. Doses calculated with the PENELOPE code agreed with those around the peak but became smaller in the valley.

Original languageEnglish
Pages (from-to)155-159
Number of pages5
JournalApplied Radiation and Isotopes
Volume67
Issue number1
DOIs
Publication statusPublished - 2009 Jan

Keywords

  • Dose
  • GafChromic film
  • Microbeam
  • PENELOPE
  • Synchrotron radiation

ASJC Scopus subject areas

  • Radiation

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