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7  Articles
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Fricke dosimetry was performed in radiation fields of 60Co and 137Cs, corresponding to the Gammabeam 651PT irradiator loaded with new 60Co sources and a new Gammacell-3000 Elan self-irradiator with 137Cs. This last irradiator was purchased with funds from... see more

A simple void detection system for concrete was successfully developed using high-penetration gamma rays with Compton scattering. This research attempted to identify a void in the subsurface of a concrete volume that could not be accessed from any of the ... see more

UltimaGoldTM AB and OptiphaseTrisafe are two liquid scintillators made by Perkin Elmer and EG & G Company respectively. Both are commercially promoted as scintillation detectors for a and ß particles. In this work, the responses to ?-rays and neutrons of ... see more

Ionizing radiation can be used in food industry in order to control the number of microbiological contaminants, among others. The sources of irradiation allowed to be used in this respect are: high-voltage electron beams up to 10 MeV, X – rays up to 5 MeV... see more

Objective: Brachytherapy sources are widely used for the treatment of cancer. The report of Task Group No. 43 (TG-43) of American Association of Physicists in Medicine is known as the most common method for the determination of dosimetric parameters for b... see more

The mass attenuation coefficients of graphene, MWNTs and, SWNTs have been measured for gamma energy range 356 to 1332 keV from the radioactive sources 60Co, 133Ba and 137Cs using a well calibrated gamma ray spectrometer consisting of a 3 ´ ´x 3 ´ ´ NaI(Tl... see more

The optical absorption of zinc tetraborate at different concentrations of the terbium impurity (0, 0.5, 1, 2, 4, 8 mol%) was analyzed. The radioluminescence (RL) emission spectra was obtained after beta irradiation of a 90Sr/90Y source. The RL spectrum sh... see more

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