TR Dizin İndeksli Yayınlar Koleksiyonu / TR Dizin Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14365/4

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Browsing TR Dizin İndeksli Yayınlar Koleksiyonu / TR Dizin Indexed Publications Collection by Department "İEÜ, Fen Edebiyat Fakültesi, Fizik Bölümü"

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    Research Project
    Aktif Nano Parçacıkların İki Boyutlu Karmaşık Yüzeylerde İncelenmesi; Yaşayan Kristal Oluşumu
    (2021) Zafer, Aytürk Hamdi; Akgüç, Gürsoy Bozkurt
    İnce su filmindeki aktif küresel parçacıklar birisi lazer kaynağı ile ısıtılmış komşu iki su kabarcığı üzerinde ısıdan dolayı oluşan su akıntısı yardımıyla birikirler. Bu özel geometri daha önce pasif parçacıklar için yapılan deneyimizden alınmıştır. Su akışı zamanla değişen birikinti dolayısı ile farklılık gösterir bu anlamda aktif bir akım olarak düşünülebilir. Ayrıca parçacıkların arasında bir zaman bağımlı geri besleme kuvveti de eklenmiştir. Geri beslemenin çekici veya itici olması incelenmiş çekici bir geri besleme ile öbekleşmeler gözlenmiş birikintinin daha kolay olduğu gözlemlenmiştir. Hem aktif su akımı hem de geri besleme parçacıkların çift korelasyonları ve ortalama uzaklaşma bilgilerine bakılarak tartışılmıştır.
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    Article
    Developing of a Virtual Mca To Acquire a Radiation Spectrum
    (2021) Tektaş, Gözde; Çeliktaş, Cüneyt
    A virtual MCA (Multichannel Analyzer) was developed via a software in the computerenvironment to display a spectrum for radiation detection experiments. A pulse generator thatsubstitutes for a particle detector was used to supply the signals to be analyzed in the MCA. Thepulses from the generator were analyzed by a virtual MCA and a real MCA. Channel numbersand the number of counts in these channels, and the total counts obtained from the virtual MCAand the real MCA were compared with each other. For comparing of the number of counts, datawere accumulated in different acquisition times. After comparison of the results, it wasobserved that the virtual MCA was quite successful as well as a real MCA. It was concludedfrom the introduced work that the developed virtual MCA would be able to use in a radiationdetection system like a real one.
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    Article
    Investigation of a Beta Spectrum Through Virtual Mca Supported by Virtual Oscilloscope
    (2023) Çeliktaş, Cüneyt; Tektaş, Gözde
    In this study, the performance of a developed virtual MCA (Multichannel Analyzer) was tested in a beta spectrometer. A real MCA was also used in the spectrometer to compare the results from the virtual one. The beta energy spectrum of a 204Tl radioactive source was displayed in the real and virtual MCAs. Total counts in the spectra from both MCAs were determined for different data acquisition times. In addition to the total counts, spectrum shapes, starting and ending channel numbers of the beta spectrum from the virtual MCA were also compared with those of the real one. Besides, an oscilloscope feature was brought in to the virtual MCA different from the conventional ones. The output signal shapes of a main amplifier through the detector were displayed in a real oscilloscope and the developed virtual oscilloscope to test this feature. It was noticed that results from both MCAs and oscilloscopes were highly compatible with each other. It is concluded that the developed virtual MCA supported by the virtual oscilloscope could be used like a real one.