Browsing by Author "Celiktas C."

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    Improving the resolution of beta scattering spectroscopy
    (2004) Celiktas C.; Selvi S.; Yegin G.
    We have examined the performance of a modified beta-ray spectrometer using a pulse shape analyzer/timing single channel analyzer and related electronics, thereby preserving the low energy electron tail in measurement of the scattered electron spectra from an n-type Si wafer target. Comparison of measurements with the scattering spectra calculated by the Monte Carlo program EGS4 indicates good agreement across a significant part of the spectrum, an exception being for the energy region 30-100keV. Re-evaluation of existing scattering cross-sections would be useful, as would possible geometrical effects of the scattering arrangement used herein. Present efforts seek to contribute to the evaluation of electron scattering cross-sections and improvement in theoretical models. © 2004 Elsevier Ltd. All rights reserved.
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    Calibration of gamma-ray detectors using Gaussian photopeak fitting in the multichannel spectra with a LabVIEW-based digital system
    (Institute of Physics, 2017) Schlattauer L.; Parali L.; Pechousek J.; Sabikoglu I.; Celiktas C.; Tektas G.; Novak P.; Jancar A.; Prochazka V.
    This paper reports on the development of a gamma-ray spectroscopic system for the (i) recording and (ii)rocessing of spectra. The utilized data read-out unit consists of a PCI digital oscilloscope, personal computer and LabVIEW™ programming environment. A pulse-height spectra of various sources were recorded with two NaI(Tl) detectors and analyzed, demonstrating the proper usage of the detectors. A multichannel analyzer implements the Gaussian photopeak fitting. The presented method provides results which are in compliance to the ones taken from commercial spectroscopy systems. Each individual hardware or software unit can be further utilized in different spectrometric user-systems. An application of the developed system for research and teaching purposes regarding the design of digital spectrometric systems has been successfully tested at the laboratories of the Department of Experimental Physics. © 2017 European Physical Society.