title: Spectromicroscopic film dosimetry for high-energy microbeam from synchrotron radiation.
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 microm, and the center-to-center distance was 200 microm. The peak and valley dose rates in air were found to be 120 and 0.7Gy/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.
authors.affiliation: Japan Synchrotron Radiation Research Institute, Kouto 1-1-1, Sayo, Hyogo 679-5198, Japan.
authors.forename: Nobuteru
authors.initials: N
authors.lastname: Nariyama
authors.forename: Takuji
authors.initials: T
authors.lastname: Ohigashi
authors.forename: Keiji
authors.initials: K
authors.lastname: Umetani
authors.forename: Kunio
authors.initials: K
authors.lastname: Shinohara
authors.forename: Hiroki
authors.initials: H
authors.lastname: Tanaka
authors.forename: Akira
authors.initials: A
authors.lastname: Maruhashi
authors.forename: Genro
authors.initials: G
authors.lastname: Kashino
authors.forename: Ai
authors.initials: A
authors.lastname: Kurihara
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kondob
authors.forename: Manabu
authors.initials: M
authors.lastname: Fukumoto
authors.forename: Koji
authors.initials: K
authors.lastname: Ono
mesh_terms: D005373:Film Dosimetry / Q000379:methods*; D008853:Microscopy / Q000379:methods; D017356:Synchrotrons