In this work, the equivalent dose values have been determined using the standard multiple- and single- aliquots process for the geological sample and the infrared stimulated luminescence decay curves were decomposed into fast, medium and slow components using a simple fitting procedure. The Equivalent dose (ED) values were recalculated using these components and the results were compared in between. The ED obtained using the slow components displays comparable results with those obtained by standard methods.

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The Study of (n,d) Reaction Cross Sections for New Evaluated Semi-Empirical Formula Using Optical Model

Journal of Fusion Energy (2009)

Mustafa Hicabi Bölükdemir E. Tel Şeref Okuducu A. Aydın

Excitation function

10.1007/s10894-009-9211-4

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Study on the efficiency of p-type HPGe detector using PHITS MC for samples with volumetric geometry

Book of Abstracts (2022)

Esra Uyar Mustafa Hicabi Bölükdemir

Semiconductor detector

10.21175/rad.spr.abstr.book.2022.28.4

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Dating of Active Main Fault Sample by Use of Infrared Stimulated Luminiscence

Deleted Journal (2009)

Mustafa Hicabi Bölükdemir Güneş Tanır

Optik tarihlendirme teknigi birikinti sedimentlerin tarihlendirilmesi icin gittikce artan bir sekilde uygulanmaktadir. Bu teknikte, 150 ka’ya kadar olcumler tipik olsa da 800 ka’ya kadar da dogru birikinti kronolojisi elde edilmektedir. Bu calismada Infrared Uyarmali Luminesans teknigi kullanarak Marmara fay orneklerinin tarihlendirilmesi ve fay hareketi esnasinda luminesans sinyalinin sifirlanmasinin test edilmesi amaclanmistir. Kullanilan ornek Turkiye’nin kuzeyindeki Marmara denizinden alinmistir. Esdeger dozun elde edilmesinde cok tablet ve tek tablet yontemleri kullanilmistir. Alinan sedimentlerin son birikinti suresi 5800±390 yil olarak bulunmustur. Bu calisma jeomorfolojik sureclerin tarihlendirilmesinde cevresel degisikliklerin onemini gostermektedir ve IRSL tarihlendirme tekniginin yeni uygulamalarindan biridir

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Direct determination of radiation dose in human blood

arXiv (Cornell University) (2014)

Ayşe Güneş TANIR Özge Güleç Eren Şahi̇ner Mustafa Hicabi Bölükdemir Kemal Koç

Our purpose is to measure the internal radiation dose (ID) using human blood sample. In the literature, there is no process that allows the direct measurement of ID received by a person. This study has shown that it is possible to determine ID in human blood exposed to internal or external ionizing radiation treatment both directly and retrospectively. OSL technique was used to measure the total dose from the blood sample. OSL counts from the waste blood of the patient injected with a radiopharmaceutical for diagnostic or treatment purposes and from a blood sample having a laboratory-injected radiation dose were both used for measurements. The decay and dose-response curves (DRC) were plotted for different doses. The doses received by different blood aliquots have been determined by interpolating the natural luminescence counts to DRC. In addition, OSL counts from a healthy blood sample exposed to an external radiation source were measured. The blood aliquots were given different 0-200Gy beta doses and their decay and dose-response curves were plotted. The internal dose received by the blood aliquots injected with radioisotope was determined by interpolating the natural luminescence counts to DRC. The internal dose values were found as 0.46Gy and 0.51Gy for different dose range. The blood aliquots were exposed to different external laboratory doses. The internal dose values corresponding to 10Gy laboratory dose from the aliquots exposed to external radiation were found as 10.94Gy for Disc3 and ~10.79Gy for Disc1.This study shows that the dose received by a person can be measured directly, simply and retrospectively by using only a very small amount of blood sample. The results will have important ramifications for the medicine and healthcare fields in particular.

Internal dose

Human blood

Internal radiation

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Investigation of coulomb and pairing effects using new developed empirical formulas for proton-induced reaction cross sections

Physics of Atomic Nuclei (2010)

E. Tel Emine Aydin A. Aydın Abdullah Kaplan Mustafa Hicabi Bölükdemir

10.1134/s1063778810030038

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Calculation of Radii and Density of ^7–19 B Isotopes Using Effective Skyrme Force

Communications in Theoretical Physics (2008)

E. Tel Şeref Okuducu Güneş Tanır N. N. Aktı Mustafa Hicabi Bölükdemir

In this study, the proton and neutron densities, charge densities, rms nuclear charge radii, rms nuclear mass radii, rms nuclear proton, neutron radii, and neutron skin thickness are calculated by using Hartree–Fock method with an effective nucleon-nucleon Skyrme interactions with SI, SIII, SIV, T3, SKM, and SKM* parameters. These nuclear properties for the neutron-rich isotopes of B (Boron) are presented. The calculated results are compared with the experimental and theoretical results of other researchers.

10.1088/0253-6102/49/3/37

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Comparison of the Monte Carlo simulations for modeling a well-type HPGe detector

Book of Abstracts (2022)

Esra Uyar Mustafa Hicabi Bölükdemir

Semiconductor detector

10.21175/rad.sum.abstr.book.2022.21.2

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Characterisation of Two p-Type HPGe Detectors by Measurements and Monte Carlo Simulations

SSRN Electronic Journal (2022)

Esra Uyar Mustafa Hicabi Bölükdemir

This study aims to characterize two p-type HPGe detectors with the same geometric properties, which were put into operation 9 years ago by determining the optimum dead layer (DL) thickness. When HPGe detectors are kept at room temperature, DL grows over the lifetime of the detector due to the diffusion of lithium atoms in the Ge crystal, which has a significant effect on detector efficiency. In the study, experimental efficiency values were measured in the energy range of 81-1408 keV using point sources. As a result of simulations using general-purpose (PHITS) and specific-purpose (GESPECOR and DETEFF) Monte Carlo (MC) codes, DL thicknesses, which were stated to be <1mm after production, were 1.19 mm for Det1 and 1.71 mm for Det2. Experimental full energy peak efficiency (FEPE) values and MC results calculated with optimized DL thicknesses have the greatest difference of 5%. The two detectors were successfully characterized as a result of the current DL thicknesses determined by the MC simulations. It has been concluded that vacuum degradation is another reason for the variation of the DL thickness specified by the manufacturer over time.

Semiconductor detector

10.2139/ssrn.4085407

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