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. 2016 Nov:117:2-7.
doi: 10.1016/j.apradiso.2016.05.006. Epub 2016 May 11.

Neutron H*(10) estimation and measurements around 18MV linac

Pablo Víctor Cerón Ramírez  1 , José Antonio Irán Díaz Góngora  2 , Lydia Concepción Paredes Gutiérrez  3 , Teodoro Rivera Montalvo  2 , Héctor René Vega Carrillo  4
Affiliations

Neutron H*(10) estimation and measurements around 18MV linac

Pablo Víctor Cerón Ramírez et al. Appl Radiat Isot. 2016 Nov.

Abstract

Thermoluminescent dosimetry, analytical techniques and Monte Carlo calculations were used to estimate the dose of neutron radiation in a treatment room with a linear electron accelerator of 18MV. Measurements were carried out through neutron ambient dose monitors which include pairs of thermoluminescent dosimeters TLD 600 (6LiF: Mg, Ti) and TLD 700 (7LiF: Mg, Ti), which were placed inside a paraffin spheres. The measurements has allowed to use NCRP 151 equations, these expressions are useful to find relevant dosimetric quantities. In addition, photoneutrons produced by linac head were calculated through MCNPX code taking into account the geometry and composition of the linac head principal parts.

Keywords: LINAC; Monte Carlo; Neutron dosimetry.

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