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Variation of Energy Resolution with Distance for a NaI(Tl) Detector

100%
Akkurt İ., Arda S., Gunoglu K.
Acta Physica Polonica A
|
2015
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vol. 128
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issue 2B
B-422-B-423
EN
As the nuclear radiation has started to be used in a variety of different fields, it is important to be protected from it, and thus the radiation measurement becomes vital. The quality of the performance of a detection system, used for the energy measurements, is important. It is characterized by the width of the pulse-height distribution, obtained for the particles of the same energy (monoenergetic source). The energy spectrum of a radiation source depends on the type and energy of the incident particle and the type of the detector. In this work the energy resolution of a 3"×3" NaI(Tl) detector has been measured for photon energies of 511, 662, 835, 1173, 1275, and 1332 keV, and its variation with the detector-source distance was investigated. The energy resolution of a detector system is obtained from the peak full width at one-half of the maximum height (FWHM) of a single peak (for a particular energy) as a function of detector-source distance. It was found that the energy resolution has decreased with the increasing distance.
2
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Radiation Shielding Properties of Shotcrete

88%
Gunoglu K., Akkurt I., Basyigit C., Çakıroğlu M., Akkaş A.
Acta Physica Polonica A
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2014
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vol. 125
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issue 2
299-300
EN
Shotcrete is a concrete spraying of concrete or mortar that may be accomplished through either a dry- or wet-mix process. It is made of normal weight aggregates which have a density of approximately 2323 kg/m^3. For the most part, shotcrete is used in underground excavations in rock and repair work in constructions. In this study, linear attenuation coefficient (μ, cm^{-1}) was measured for shotcrete produced with dry mix process. Measurements were carried out by gamma spectrometry containing NaI(Tl) detector and multichannel analyzer.
3
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Photon Attenuation Coefficients of Iron Doped Clay at 662~keV

88%
Akkurt I., Mavi B., Gunoglu K., Akyıldırım H., Canakci H.
Acta Physica Polonica A
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2013
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vol. 123
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issue 2
343-344
EN
After discovery of the radioactivity by Becquerel, radiation started to be used in large fields and it became part of our life nowadays. Using radiation from industry to medicine brings its hazardous effect and radiation protection developed in physics in parallel with the utilization of radiation. Although time, distance and shielding are the main rules to be protected from radiation, shielding is most effective way. In this case development of shielding materials becomes important. Clay is an interesting material and besides using it for different purposes it can be used as plaster material in building construction. In this study iron doped into clay samples and radiation shielding properties has been measured at 662 keV gamma rays. The measurements have been performed using gamma spectrometer system which contains NaI(Tl) and 16k multichannel analyser.
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