Monte Carlo simulation of a cobalt 60 beam Journal Article
| Authors: | Han, K.; Ballon, D.; Chui, C.; Mohan, R. |
| Article Title: | Monte Carlo simulation of a cobalt 60 beam |
| Abstract: | We have used the Stanford Electron Gamma Shower (EGS) Monte Carlo code to compute photon spectra from an AECL Theratron 780 cobalt 60 unit. Particular attention has been paid to the careful modeling of the geometry and material construction of the cobalt 60 source capsule, source housing, and collimator assembly. From our simulation, we conclude that the observed increase in output of the machine with increasing field size is caused by scattered photons from the primary definer and the adjustable collimator. We have also used the generated photon spectra as input to a pencil beam model to calculate the tissue–air ratios in water and compared it to a model which uses a monochromatic photon energy of 1.25 MeV. © 1985, American Institute of Physics for the National Institute of Standards and Technology. All rights reserved. |
| Keywords: | nonhuman; radiotherapy; models, theoretical; radioisotope; water; cobalt radioisotopes; cobalt 60; theoretical study; monte carlo method; computer analysis; computerized simulation; system analysis; photon beams; human; priority journal; gamma dosimetry; depth dose distributions |
| Journal Title: | Medical Physics |
| Volume: | 14 |
| Issue: | 3 |
| ISSN: | 0094-2405 |
| Publisher: | American Association of Physicists in Medicine |
| Date Published: | 1987-05-01 |
| Start Page: | 414 |
| End Page: | 419 |
| Language: | English |
| DOI: | 10.1118/1.596120 |
| PUBMED: | 3600534 |
| PROVIDER: | scopus |
| DOI/URL: | |
| Notes: | Letter -- Export Date: 5 February 2021 -- Source: Scopus |
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