NaI(Tl) Scintillator's Response Functions for Point-like and Distributed Gamma-ray Sources
Journal Title: Journal of Nuclear Physics, Material Sciences, Radiation and Applications - Year 2016, Vol 4, Issue 1
Abstract
The response functions of a NaI(Tl) detectors have been estimated using Monte Carlo methods. Response functions were calculated for monoenergetic photon sources (0.05 to 3 MeV). Responses were calculated for point-like sources and for sources distributed in Portland cement cylinders. Calculated responses were used to estimate the detector efficiency for pointlike and distributed sources. Samples of cylindrical Portland cement were prepared and exposed to the photoneutron field produced by a 15 MV linac used for radiotherapy. Short half-life radioisotopes were induced and the activity was determined by measuring the pulse-height spectra with a NaI(Tl) g-ray spectrometer that was calibrated using point-like sources. Instead of doing corrections due to differences between the geometry, material and solid angle of point-like sources used for calibration, and the Portland cement cylinders, the detection efficiency was determined using the ratio between the efficiencies for the point-like and the distributed sources estimated with the Monte Carlo calculations, and the activity of the induced isotopes in cement was obtained.
Authors and Affiliations
H. R. Vega-Carrillo, J. I. Benites-Rengifo, V. M. Hernandez-Davila, J. M. Ortiz-Rodriguez, H. A. De Leon-MartÃnez
Keywords
Related Articles
- EP ID EP594932
- DOI 10.15415/jnp.2016.41013
- Views 230
- Downloads 0
Study of Excitation Functions of (p, n) Reactions for 56Fe and 57Fe Target from Threshold to 30 MeV
The theoretical calculation of the cross section for formation of 56,57co in (p, n) reaction from 56,57Fe target have been studied from reaction threshold to 30 MeV using TALyS-1.4 nuclear model reaction code whereby we...
Calcium Hardness Analysis of Water Samples Using EDXRF Technique
Calcium hardness of water samples has been determined using a method based upon the energy Dispersive X-ray fluorescence (eDXRF) technique for elemental analysis. the minimum detection limit for Ca has been found in the...
Gamma Radiation Doses Effects on Mechanical Properties and Microwave Absorption Capacity of Rubber Doped Concrete
The main raw material for the construction industry is concrete; whose fundamental components are the fine and coarse aggregates, water and cement. For the obtaining of these materials are necessary activities that gener...
Applications of Hubble Volume in Atomic Physics, Nuclear Physics, Particle Physics, Quantum Physics and Cosmic Physics
In this paper an attempt is made to emphasize the major shortcomings of standard cosmology. It can be suggested that, the current cosmological changes can be understood by studying the atom and the atomic nucleus through...
EDXRF Analysis of Some Fungal Species for the Uptake Capacity of 28Ni, 48Cd, and 82Pb Metal Ions From Aqueous Solution
In this paper, Energy Dispersive X-ray Fluorescence (EDXRF) analysis of eight fungi species, namely, Aspergillus niger, Aspergillus terreus, Trichoderma longibrachiatum, Trichoderma fasciculatum, Penicillin Janthinellum,...