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Öğe Determination of the energy transitions and half-lives of Rubidium nuclei(DE GRUYTER POLAND SP ZOO, 2018) Bicer, Ahmet; Manisa, Kaan; Calik, Abdullah Engin; Erdogan, Mehmet; Sen, Mursel; Bircan, Hasan; Dapo, HarisThe photonuclear reactions, first extensively studied in the 1970's and performed using the gamma rays obtained via bremsstrahlung, are a standard nuclear physics experiment. In this study, a non-enriched Rubidium sample was irradiated with photons produced by a clinical linear electron accelerator (cLINACs) with energies up to 18 MeV with the aim of activating it through photonuclear reactions. The activated sample was measured with a high purity germanium detector (HPGe) with the aim of measuring the transition energies and half-lives. The spectroscopic analysis performed on the obtained data yielded high quality results for the transition energies with precision matching or surpassing the literature data. For the half-lives the results were consistent with the literature, most notably the half-life of Rb-84m decay was determined as 20.28(2) m. The results for both energies and half-lives further show that the clinical linear accelerators can be successfully used as an efficient tool in experimental nuclear research endeavors.Öğe Fragmentation of Xe-129 in the liquid-gas phase transition region(SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAK, 2007) Erdogan, Mehmet; Bueyuekcizmeci, Nihal; Ogul, RizaWe analyzed the fragmentation of the Xe-129 nucleus to determine the effects of surface and symmetry energies on the fragment distribution on the basis of the statistical multifragmentation model. Relative yields of fragments were classified with respect to the mass number of the fragments in the transition region. It was found that the symmetry energy of the hot fragments produced in the statistical freeze-out is very important for isotope distributions. However, its influence on the mean fragment mass distributions is negligible. On the other hand, it was demonstrated that surface energy significantly influences the fragment distribution while the symmetry energy contribution remains negligible.Öğe Konya-Ilgın-Çavuşçu Linyit Maden Yatağında Dış Ortam Gama Doz Oranlarının Belirlenmesi(2016) Manisa, Kaan; Erdogan, MehmetBu çalışmada Konya'nın Ilgın ilçesindeki linyit kömür yatağındaki doğal olarak oluşmuş radyoaktif çekirdeklerden kaynaklanan karasal gama doz oranları belirlenmiştir. Ölçümler, toprak yüzeyinin üstünde ve NaI(Tl) gama-ışın detektörü kullanılarak gerçekleştirilmiştir. Ayrıca, ölçülen bu karasal gama doz oranları kullanılarak her bir ölçüm noktası için ortalama harici yıllık etkin dozlar hesaplanmıştırÖğe THE MEASUREMENT OF RADON ACTIVITY CONCENTRATIONS IN TAP WATER IN SOME DWELLINGS OF KONYA PROVINCE - TURKEY(NORTH UNIV BAIA MARE, 2015) Erdogan, Mehmet; Manisa, Kaan; Tel, FidanRadon (Rn-222) concentration was determined in selected 27 tap water samples collected during autumn and winter seasons in 2012 around city of Konya, Turkey. While 11 tap water samples were taken from dwellings with water reservoir, other tap water samples were taken from dwellings without water reservoir. Radon measurements were performed by an AlphaGUARD radon gas analyzer. All determined the mean radon concentrations for the autumn and winter seasons were found to be 3.15 Bq l(-1) for the samples collected from dwellings with water reservoir and 10.20 Bq l(-1) for the samples collected from dwellings without water reservoir. The calculated effective doses for ingestion were 0.17 for minimum and 3.67 mu Sv a(-1) for maximum and for inhalation of radon in indoor air caused by these waters 2.18 mu Sv a(-1) for minimum and 45.84 mu Sv a(-1) for maximum.Öğe Measurements of radon concentration levels in thermal waters in the region of Konya, Turkey(TAYLOR & FRANCIS LTD, 2013) Erdogan, Mehmet; Ozdemir, Fatih; Eren, NuretdinRn-222 (radon) is one of the most important sources of natural radiation to which people are exposed. It is an alpha-emitting noble gas and it can be found in various concentrations in soil, air and in different kinds of water. In this study, we present the results of radon concentration measurements in thermal waters taken from the sources in the region of Konya located in the central part of Turkey. The radon activity concentrations in 10 thermal water samples were measured by using the AlphaGUARD PQ 2000PRO radon gas analyser in spring and summer of the year 2012. We found that radon activity concentrations range from 0.60 +/- 0.11 to 70.34 +/- 3.55kBqm(-3) and from 0.67 +/- 0.03 to 36.53 +/- 4.68kBqm(-3) in spring and summer, respectively. We also calculated effective doses per treatment in the spas for the spring and summer seasons. It was found that the minimum and maximum effective doses per treatment are in the range of 0.09-10.13 nSv in spring and in the range of 0.1-5.26 nSv in summer.Öğe NUCLEAR MATTER INCOMPRESSIBILITY: FROM VMC TO SKYRME-LANDAU PARAMETERIZATION(JAGIELLONIAN UNIV PRESS, 2017) Manisa, Kaan; Erdogan, Mehmet; Bircan, Hasan; Erdogan, Nevin ZeynepThe new Skyrme parameter set is determined by requiring that Variational Monte Carlo (VMC) calculations reproduce empirical values for properties of nuclear matter, such as binding energy per particle and saturation density. We found the new Landau parameter set by using the new Skyrme parameter set, the saturation density, and energy obtained from the new Skyrme parameter set for symmetric nuclear matter (SNM). Incompressibility of symmetric nuclear matter is also calculated by the described Skyrme-Landau Parameterization.
