Browsing by Author "Akar U."

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Analytical investigation of energy spectrums of beta rays emitted from ⁹⁰Sr and ²⁰⁴Tl radioisotopes
(2011-01-01) Yalcin S.; Gurler O.; Gundogdu O.; Akar U.
The energy spectra of beta rays emitted from 90Sr and 204Tl radioisotopes were obtained by using a silicon surface barrier detector with a 1000 μm depleted layer and 50 mm2 effective area. The detector response function is interpreted by making use of range distributions of mono-energetic electrons in matter and by assuming a linear energy loss along the range in the depleted layer of the detector. An analytical expression is given for pulse height distribution obtained in the surface barrier detector. A good agreement is observed between the experimental results and theoretical interpretation. © 2011 Akadémiai Kiadó, Budapest, Hungary.
Erratum: Analytical investigation of energy spectrums of beta rays emitted from ⁹⁰Sr and ²⁰⁴Tl radioisotopes (Journal of Radioanalytical and Nuclear Chemistry (2011) DOI: 10.1007/s10967-011-1198-4)
(2011-09-01) Yalcin S.; Gurler O.; Gundogdu O.; Akar U.
Measurements of radium levels in bottled natural spring water of marmara region (Turkey)
(2012-09-24) Akar U.; Gurler O.; Kahraman A.; Yalcin S.; Kaynak G.; Gundogdu O.
Drinking water may contain varying levels of radioactivity. It is therefore important to determine the radium levels in drinking waters for public health and radiation protection. This paper presents results of 226Ra concentrations in bottled spring waters. The concentration of radium has been assessed in the bottled natural spring water samples commercially available in Turkey. Measurements of 226Ra concentrations in bottled natural spring water samples were carried out by AlphaGUARD, measuring the radon in equilibrium with radium. The radium concentration in these samples is found to be between 0.03 and 0.43 Bq·L-1. These values were compared with the recommended safe limits for drinking water.
Measurements of radon levels in thermal waters of Bursa, Turkey
(2010-12-01) Gurler O.; Akar U.; Kahraman A.; Yalcin S.; Kaynak G.; Gundogdu O.
Radon (222Rn) is a tasteless, colourless and odourless radioactive noble gas, responsible for approximately 50% of radiation from natural sources. Being highly soluble in water, radon in water sources is also a major public health concern and is still an active research area. This paper presents the results of radon concentration measurements in thermal water samples from Çekirge region of the city of Bursa, rich in geothermal waters located in the northwest part of Turkey. The radon activity concentrations in 36 thermal water samples were determined by using AlphaGUARD PQ 2000PRO radon gas analyser. AlphaGUARD is an ionizing chamber which measures radon via alpha spectrometric techniques. It is found that the concentration ranged from 2.513 + 0.286 to 82.55311.919 Bq·L-1 for radon. The doses delivered to the users during treatment were also calculated and found to be in the range of 0.36 nSv to 11.89 nSv per treatment. © by PSP.