Journal
APPLIED RADIATION AND ISOTOPES
Volume 67, Issue 1, Pages 155-159Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2008.08.002
Keywords
GafChromic film; Dose; Microbeam; Synchrotron radiation; PENELOPE
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Funding
- Japan Synchrotron Radiation Research Institute (JASRI) [2007A1214, 2007B1241]
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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 mu m, and the center-to-center distance was 200 pm. The peak and valley dose rates in air were found to be 120 and 0.7 Gy/s, respectively. In a poly methylmethacrylate 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. (C) 2008 Elsevier Ltd. All rights reserved.
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