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    Wyświetlanie 1-5 z 5
    Tytuł:
    Analysis Framework for the J-PET Scanner
    Autorzy:
    Krzemień, W.
    Gajos, A.
    Gruntowski, A.
    Stola, K.
    Trybek, D.
    Bednarski, T.
    Białas, P.
    Czerwiński, E.
    Kamińska, D.
    Kapłon, Ł.
    Kochanowski, A.
    Korcyl, G.
    Kowal, J.
    Kowalski, P.
    Kozik, T.
    Kubicz, E.
    Moskal, P.
    Niedźwiecki, Sz.
    Pałka, M.
    Raczyński, L.
    Rudy, Z.
    Salabura, P.
    Sharma, N.
    Silarski, M.
    Słomski, A.
    Smyrski, J.
    Strzelecki, A.
    Wieczorek, A.
    Wiślicki, W.
    Zieliński, M.
    Zoń, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402621.pdf
    Data publikacji:
    2015-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.57.nf
    87.57.uk
    29.85.-c
    Opis:
    J-PET analysis framework is a flexible, lightweight, ROOT-based software package which provides the tools to develop reconstruction and calibration procedures for PET tomography. In this article we present the implementation of the full data-processing chain in the J-PET framework which is used for the data analysis of the J-PET tomography scanner. The framework incorporates automated handling of PET setup parameters' database as well as high level tools for building data reconstruction procedures. Each of these components is briefly discussed.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 5; 1491-1494
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of Bayesian Reasoning and the Maximum Entropy Method to Some Reconstruction Problems
    Autorzy:
    Fornalski, K.
    Parzych, G.
    Pylak, M.
    Satuła, D.
    Dobrzyński, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537660.pdf
    Data publikacji:
    2010-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    29.85.-c
    78.70.Bj
    76.80.+y
    Opis:
    The so-called Bayesian reasoning is applied whenever uncertainty has to be considered as serious factor in interpretation of results. The paper presents analysis of the impact of inaccurate data on the straight line and quadratic relation fittings. This type of analysis is particularly important when one tries to decide on the type of dependence. The paper also shows examples of the Maximum Entropy Methods applied to the reconstruction of the hyperfine parameters distribution from the measured Mössbauer spectra of $GaFeO_{3}$ and the electron-positron momentum distribution from the positron annihilation data of Gd.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 6; 892-899
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gamma Radiation Absorption Characteristics of Concrete with Components of Different Type Materials
    Autorzy:
    Stanković, S.
    Ilić, R.
    Janković, K.
    Bojović, D.
    Lončar, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537948.pdf
    Data publikacji:
    2010-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    28.41.Qb
    29.25.Rm
    29.27.Eg
    29.85.-c
    Opis:
    Nuclear facilities as nuclear power stations, nuclear research reactors, particle accelerators and linear accelerator in medical institution using concrete in building construction. The different type materials of the aggregate as component of concrete were analyzed to provide radiation protection. The energy deposited the transmission factor and the mass attenuation coefficients in ordinary and barite concretes have been calculated with the photon transport Monte Carlo software. The numerical simulations results show that using barite as an aggregate in the concrete is one of the solutions for gamma ray shielding. Thereat, it is shown non-destructive method for determining the gamma radiation absorption characteristics of concrete.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 5; 812-816
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Neutron-induced medical radioisotope production in a conceptual accelerator-driven system, fueled with uranium carbide
    Autorzy:
    Arslan, A.
    Bakir, G.
    Selçuklu, S.
    Genç, G.
    Yapici, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1070433.pdf
    Data publikacji:
    2016-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    28.20.-v
    28.20.Np
    28.65.+a
    29.85.Fj
    29.20.-c
    Opis:
    In this study, the medical radioisotope production performance of a conceptual accelerator-driven system is investigated. Lead-bismuth eutectic is used as target material. The fuel core of the considered accelerator-driven system is divided into ten subzones, loaded with uranium carbide and various isotopes (isotopes of copper, gold, cobalt, holmium, rhenium, scandium, and thulium) and cooled with light water. As is known, light water is an effective moderator of neutrons as well as a good coolant. The fuel and the isotopes are separately placed as cylindrical rods with a cladding of carbon composite. The volume fractions of fuel, isotope, cladding and coolant are selected as 25%, 35%, 10% and 30%, respectively. The copper rods are placed into the first five subzones due to the fact that copper isotopes have low capture cross-section. In the case of the each radioisotope production, one of the other considered isotopes that have higher capture cross-section are placed into the following five subzones for optimization of fission, fissile breeding and radioisotope production. The graphite zone is located around the fuel core to reflect the escaping neutrons. Boron carbide (B₄C) is used as shielding material. In order to produce more neutrons (about 25-30 neutrons per 1 GeV proton), the target is irradiated with a continuous beam of 1 GeV protons. All neutronic computations have been performed with the high-energy Monte Carlo N-Particle Transport Code using the LA150 data library. The neutronic results obtained from these calculations show that the examined accelerator-driven system has a high neutronic capability, in terms of production of thermal power, fissile fuels, and medical radioisotopes.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 1; 68-71
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Examples for the Industrial Use of Synchrotron Radiation
    Autorzy:
    Hormes, J.
    Chauvistré, R.
    Schmitt, W.
    Pantelouris, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920823.pdf
    Data publikacji:
    1992-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    07.85.+n
    29.20.-c
    32.30.Rj
    78.70.Dm
    Opis:
    Synchrotron radiation has become a valuable tool for many fields of basic research. Several of the methods which were here developed are also suitable for solving industrial problems. Perhaps the most promising ones are the various X-ray techniques, e.g. X-ray absorption spectroscopy (EXAFS and XANES) and X-ray fluorescence. In the following article the theoretical and experimental basis for these techniques is shortly introduced and some instructive examples for such applications for actual industrial problems are dicussed. In the last section, X-ray lithography for the production of microstructures is presented as an example where synchrotron radiation is already today used for industrial production.
    Źródło:
    Acta Physica Polonica A; 1992, 82, 1; 37-50
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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