Spectromicroscopic film dosimetry for high-energy microbeam from synchrotron radiation.
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.
Nariyama
Nobuteru
N
Japan Synchrotron Radiation Research Institute, Kouto 1-1-1, Sayo, Hyogo 679-5198, Japan.
Ohigashi
Takuji
T
Umetani
Keiji
K
Shinohara
Kunio
K
Tanaka
Hiroki
H
Maruhashi
Akira
A
Kashino
Genro
G
Kurihara
Ai
A
Kondob
Takeshi
T
Fukumoto
Manabu
M
Ono
Koji
K
D005373:Film Dosimetry / Q000379:methods*; D008853:Microscopy / Q000379:methods; D017356:Synchrotrons