Evaluation of the effectiveness of steel for shielding photoneutrons produced in medical linear accelerators: A Monte Carlo particle transport study

Autor:	Leyla, Moghaddasi, Christopher, Colyer
Rok vydání:	2022
Předmět:	Neutrons Photons Steel Biophysics General Physics and Astronomy Radiology Nuclear Medicine and imaging General Medicine Particle Accelerators Monte Carlo Method
Zdroj:	Physica Medica. 98:53-62
ISSN:	1120-1797
Popis:	To confirm the effectiveness of steel as a material for shielding photoneutrons produced in medical linear accelerators and report values for neutron first and second tenth value layer to be used as radiation protection quantities.Monte Carlo code Geant4 was used to simulate transport of photoneutrons through primary barriers containing layers of concrete and steel. The photoneutron spectrum generated in high energy modern accelerator head components was simulated and projected to barriers of different thicknesses of steel including a control case of no barrier. To derive the neutron tenth value layer (TVLFor an 18 MV photon beam produced by a linear accelerator, the first and second TVLThis paper agrees with previous studies for Pu-Be sources, and we would advocate using these values for the purposes of high energy linear accelerator bunker design.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f13ee652db5fc8e506fa121123b16632 https://doi.org/10.1016/j.ejmp.2022.04.009 Zobrazit plný text záznamu Full Text from ScienceDirect