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Updated: Jun 10, 2026

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
New material for low-dose brachytherapy seeds: Xe-doped amorphous carbon films with post-growth neutron activated
R G F Gonçalves1, M V B Pinheiro, R G Lacerda
1Departamento de Física, Instituto de Ciências Exatas (ICEx), Universidade Federal de Minas Gerais (UFMG), Campus da Pampulha, Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil. rgfurst@yahoo.com.br
Abstract:
We report a novel material for use in (125)I brachytherapy that consists of amorphous carbon films grown by ion-beam-assisted deposition and doped with Xe (5 at%) by implantation. Samples of these films grown on Si substrates were irradiated with neutrons in a TRIGA-I nuclear reactor for the production (125)Xe, and latter characterized by gamma spectroscopy. The results indicate that the (124)Xe was efficiently converted into (125)Xe, the precursor of (125)I, and support the activity calculations for a model brachytherapy seed.

