| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1688125 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2006 | 12 Pages |
Abstract
In this work, the ITS 3.0/ACCEPT Monte Carlo code was used to determine the absorbed dose rates in a complex target consisting of various materials and densities. Dose rates in 512 sample vials packaged in dry ice and polyethylene were irradiated simultaneously using a 60Co semi-cylindrical source array. The vials were distributed in two carriers set 1 m apart each holding 256 vials. For this specific target and source geometry, dose rate variations of ±6% were achieved among 226 vials in the first carrier, and among 203 vials exposed to a lower dose rate in the second carrier. Dose rate variations were found to depend only slightly on the backscatter contribution from the radiation vault walls.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Ali Bellou Mohamed, Joseph Silverman, Douglas E. Weiss, Mohamad Al-Sheikhly,