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    137Cs chemical precipitation in water samples with ammonium phosphomolybdate (AMP) method and chemical yield calculation by XRF technique
    (National Academy of Science of Kyrgyzstan, Turkish Atomic Energy Authority, 2008) Başsarı, Asiye; Kaygun, Aysun; Yılmaz, Y. Z.; Yüksel, A.; TAEK-ÇNAEM
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    210Po distribution in hydrothermal vent zone at Gülbahçe, Aegean Sea
    (National Academy of Science of Kyrgyzstan, Turkish Atomic Energy Authority, 2008) Sert, İ.; Yener, G.; Uğur, A.; Pişkin, A.; Özel, E.; Eftelioğlu, M.; Pekçetinöz, B.; 45035; Bölüm Yok
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    7Be and 137Cs in lichen and soil samples
    (National Academy of Science of Kyrgyzstan, Turkish Atomic Energy Authority, 2008) Azimov, A. N.; Muminov, I. T.; Muhamedov, A. K.; Safarov, A. A.; Safarov, A. N.; Bölüm Yok
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    99Mo/99mTc generator and radiopharmaceuticals productions at Çekmece Nuclear Research and Training Center
    (Turkish Atomic Energy Authority, 2000-10) Bodur, Nazan; Yıldız, Hülya; Ergün, Aysun; Bostan, Nilgün; Akşit, Makbule; Ayyıldız, Hayrettin; Saygı, Nur; Göçer, Beytullah; TAEK-ÇNAEM
    Molybdenum-99 is produced in large quantities as the parent radioisotope of " mTc, which has been used in nuclear medicine. The rapid growth of nuclear medical diagnosis with " mTc is due to completion of a system supplying radiopharmaceuticals labelled with a short lived radioisotope like " mTc, and the development of nuclear medical instruments like an Anger Camera and a single photon emission tomography (SPECT or ECT). The Radioisotope and Radiopharmaceutical Department (RIF) at Çekmece Nuclear Research and Training Center (ÇNAEM) has been active in production of " mTc and kits to be labelled to form radiopharmaceuticals. In generator produced eluates, the purity and chemical parameters must conform to special requirements. The requirements of European Pharmacopoeia for sodium pertechnetate " mTc injection are fulfdled when it is prepared in our department. Assurance of radiopharmaceutical quality control, which involve test of biolog ical purity and pyrogenity and sterility, is also performed
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    A comparative study on neutron-gamma discrimination with UGF and UGAB scintillators
    (Azerbaijan National Academy of Sciences Institute of Radiation Problems of ANAS, 2014-10) Divani, N.; Firoozabadi, M. M.; ABF-7403-2021; 0000-0003-0561-9040; Bölüm Yok
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    A complex of equipment for preparation of high-quality radioactive sources used in precise nuclear spectroscopy
    (National Academy of Science of Kyrgyzstan, Turkish Atomic Energy Authority, 2008) Aldiyarov, N. U.; Kadyrzhanov, K. K.; Zhdanov, V. S.; Bölüm Yok
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    A computer program to help for resolution of complex and poorly resolved Cu2+ and VO2+ ions doped single EPR spectra
    (Taylor & Francis, 2009-11-01) Bıyık, Recep; Çemberci, Mustafa; Tapramaz, Recep; 0000-0001-7929-4395; TAEK-ÇNAEM
    Complex and poorly resolved Cu2+ and VO2+ doped single-crystal electron paramagnetic resonance (EPR) spectra are some of the serious problems that exist in this area. In order to help the resolution of this sort of spectra, and for easily resolvable spectra as well, a versatile computer program known as EPR RESolution, or EPRES, is presented. All detectable line positions in the single-crystal spectra taken in three mutually perpendicular planes are given as input. The program plots these line positions. The user then manually determines the lines by selecting the true data points on the plot and fitting them to a well-known variation function. If selection is not suitable, the process is canceled and renewed. By this process, as many resolvable lines as in the spectra can be resolved and determined. The user then groups the resolved lines according to the paramagnetic center to which they belong. This includes the attribution of correct nuclear spin I and MI to correct lines. After this step, hyperfine and g tensor elements can be found, constructed, and diagonalized. [Supplemental materials are available for this article. Go to the publisher’s online edition of Spectroscopy Letters for the following free supplemental resource: a copy of the EPRES computer program.]
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    A crystallographic computer program library for an IBM - 360/40 computer
    (Turkish Atomic Energy Commission, Ankara Nuclear Research and Traning Center, 1979-02) Uraz, A. Aydın; Armağan, N.; Bölüm Yok
    Kristallografik çalışmalar için oluşturulan bilgisayar program takımı tartışılmakta ve bazı ayrıntıları verilmektedir.
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    A finite element formulation for perturbation theory calculations
    (National Academy of Science of Kyrgyzstan, Turkish Atomic Energy Authority, 2008) Özgener, B.; Kaluç, S.; 149220; Bölüm Yok
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    A full report to the 6th review meeting of nuclear safety convention
    (Turkish Atomic Energy Authority, 2013-08) TAEK-NGD; Turkish Atomic Energy Authority
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    A full report to the 7th review meeting of convention on nuclear safety, August 2016
    (Turkish Atomic Energy Authority, 2016) TAEK-NGD; Turkish Atomic Energy Authority
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    A gamma spectrometric method for direct measurement of uranium contents in solid samples
    (Turkish Atomic Energy Authority, 2000-10) Yücel, Haluk; Ergin, İ.; Çetiner, M. Atıf; Demirel, Halil; Tan, M.; Özmen, Atilla; 3905; TAEK-ANAEM
    A gamma spectrometric method is described for the direct “absolute” determination of uranium contents in solid samples. To obtain the exact information about the measurement of 238U in samples by gamma-ray spectroscopy, it is essential that any one of the daughters of 238U should exist in radioactive equilibrium with 238U. This condition is mainly fulfilled by one of the first two daughters, namely, 234Th (24.1 d) and 234mPa (1.17 min) because these daughters are very short-lived compared with 238U. Therefore, the present analytical method employs direct determination of U via the 63.3 keV gamma emission from Th and via the 1001 keV gamma emission from 234mPa. The absolute photopeak efficiency data in the range of 40 keV to 2000 keV for the reverseelectrode Germanium(REGe) detector used is measured using a powder radioactive standard source. The certified uranium samples were prepared in thin thicknesses to minimize the selfabsorption of gamma rays. They are counted for the the time predetermined between 75,000 s and 125,000 s. The measured activities of 238U of the samples via the 63.3 keV (234Th ) and via the 1001 keV (234mPa) are corrected for self-absorption effects due to changes in composition of standard reference materials in a given sample-detector geometry. The self-absorption factors applied to the 46.5 keV(210Pb) peak and the 63.3 keV(234Th) peak results ranged from 10.5% to 33.1% and from 4.9% to 18.4%, respectively. For the 1001 keV(234mPa) gamma emission, the necessary self-absorption factors varied between 0.1% and 3.9%. The results obtained from the 46.5 keV of Pb being far distant member of U and those of the 63.3 keV from 234Th are used to check whether the equilibrium exist in the uranium samples. The results of U via the 63.3 keV peak of Th for the uranium standards agreed to within 0.1 to 6.9% with the certified values of 238U in the samples with uranium concentration ranging from 0.022±001 to 1.02±0.01 wt%. The results of 238U via the 1001 keV peak of 234mPa agreed well to within 0.01 to 4.7% with the certified activity values of 238U of the same samples. When the measurements of the uranium are carried out in a REGe detector system, the results indicate that the uranium concentrations in the samples can be determined to the average 7% error by using the 63.3 keV(234Th) gamma emission with appropriate corrections for self-absorption effects. The 1001 keV peak of 234mPa gives also accurate results for the determination of 238U in the same samples and the need for self absorption correction for the 1001 keV emission seems to be negligible, except in case of thicker samples than that of 1.5 cm thick.
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    A general overview and literature review on clearance criteria
    (IAEA, 2002-10) Özdemir, Tonguç; Uslu, İbrahim; TAEK-RSGD
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    A home-made neutron crystal spectrometer for research and training
    (T.A.E.C., Çekmece Nuclear Research Center, 1965-11) Akyüz, R. Ö.; Cansoy, Ç.; Domaniç, F.; TAEK-ÇNAEM
    In order to make experimental research in the field of low energy nuclear physics, a crystal neutron spectrometer is constructed in ÇNAEM. The energy range is between 0,025 - 6 eV. The available monochromator single crystals are Be, NaCl, (CaCO3), Pb. The minimum precise rotation of spectrometer is 1 minute of arc in Bragg angle. Two Soller type collimators, one from reactor to crystal and the other from sample to counter, are used. The net angular divergence is approximately 5 minutes of arc. Counting system consists of two channels, one of which is used for monitoring the reactor. Counter tubes are B10 enriched BF3 proportional counters. The main problem in construction was, to design and give precise movement to the heavy crystal shielding.
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    A investigation of characteristics of the reaction 16O(p, γ)17F at astrophysical energies
    (Türkiye Atom Enerjisi Kurumu, TÜDNAEM, 2003) Burtebayev, N.; Kakhramanov, V.; Ibraeva, E.; Sagindykov, S.; Zazulin, D.; Bölüm Yok
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    A method for calculating plutonium source LMFBR accidents
    (T.A.E.C., Çekmece Nuclear Research And Training Center, 1975) Kırbıyık, M.; TAEK-ÇNAEM
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    A method for the analysis of two Kα complex peaks in x-ray flourescence pulse height spectrums
    (Turkish Atomic Energy Commission, Ankara Nuclear Research Center, 1975-02) Şaplakoğlu, A.; Birsen, Nevzat; Onay, İ.; AEK-Ankara Nükleer Araştırma Merkezi
    X-Işını Floresans puls yükseklik analizi çalışmalarında karakteristik Kα pikleri daima çift olup Kα1, ve Kα2 piklerinden meydana gelmiştir. Bu çalışmada kısmen ayrılmış iki Kα piki elde edilmesi halinde 8K hafızalı bir minikomputer ile ve ORCAL veya FOCAL lisanları kullanılarak alanların ayrı ayrı bulunabilmesi için tamamen otomatik bir hesap yöntemi geliştirilmiştir.
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    A model technical cooperation project on the marine radioactivity assessment in the black sea region
    (Türkiye Atom Enerjisi Kurumu, TÜDNAEM, 2002) Göktepe, B. Gül; Köksal, G.; Osvath, I.; Köse, A.; Küçükcezzar, R.; Varinlioğlu, Ahmet; Güngör, Nurdan; TAEK-ÇNAEM
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    A modelled theory of pulsed-neutron experiments in fast subcritical assemblies
    (T.A.E.C., Çekmece Nuclear Research And Training Center, 1974) Adalıoğlu, Ulvi; Duderstadt, J. J.; TAEK-ÇNAEM
    The time behavior of a neutron pulse in a fast subcritical assembly is modeled by approximating the spatial dependence by a single diffusion mode and using a simple model of inelastic scattering. This model allows an explicit calculation of the time response of a detector in such a system. Of particular interest is a study of the detector response in those situations in which the flux does not decay in an exponential fashion.
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    A modified approach for rapid determination of the quality of industrially produced P-33 orthophosphoric acid preparations
    (Türkiye Atom Enerjisi Kurumu, TÜDNAEM, 2002) Abdukayumov, M. N.; Chistyakov, P. G.; Shilin, E. A.; Bölüm Yok