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Wyszukujesz frazę "Szuszkiewicz, A." wg kryterium: Autor

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Test Measurements of Modernized Version of Two-Detector Doppler Spectrometer
    Autorzy:
    Baranowski, A.
    Kostrzewa, M.
    Szuszkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2007881.pdf
    Data publikacji:
    1999-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.70.Bj
    07.85.-m
    Opis:
    Basing on the electronic analogue modules in adding and subtracting branches of pulses, a modernized two-detector Doppler spectrometer has been constructed using only one multichannel analyser. Doppler spectra for Al, Ni, Ag have been measured. ACARFIT computer program was used to compare the Doppler and angular correlation of annihilation radiation results.
    Źródło:
    Acta Physica Polonica A; 1999, 95, 4; 439-447
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studying of Nickel Alloys with 1 at.% of Ge, Zn, In, Zr and Pb by Positron Annihilation Methods
    Autorzy:
    Baranowski, A.
    Kostrzewa, M.
    Szuszkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2024150.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.70.Bj
    78.30.Er
    Opis:
    The measurements of cold rolled nickel alloys with 1 at.% of Ge, Zn, In, Zr, Pb and additionally Ti and Sb by positron lifetime and Doppler broadening techniques have been done. Monovacancies were a dominating type of defects in the alloys. The authors of the present paper connect the differences between the annihilation parameters of the investigated samples with the existence of the vacancy-impurity atom pairs. A direct proportionality between the vacancy lifetime and the product of vacancy-impurity binding energy and atomic radius of impurity atom has been found.
    Źródło:
    Acta Physica Polonica A; 2001, 99, 3-4; 329-336
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Positron Annihilation with Electrons of Admixture Atoms in Some Binary Nickel Alloys
    Autorzy:
    Baranowski, A.
    Kostrzewa, M.
    Szuszkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2042168.pdf
    Data publikacji:
    2005-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.70.Bj
    78.30.Er
    Opis:
    Weighted difference curves have been shortly presented as a proper tool allowing to analyze in another way two-detector Doppler spectra regarding positron annihilation with admixture electrons in some nickel alloys. The analysis of low and middle momentum parts of Doppler spectra for investigated alloys reflects the annihilation of positrons with admixture electrons. There is no distinct signal of annihilations with admixture electrons from the positron lifetime data for well-annealed samples.
    Źródło:
    Acta Physica Polonica A; 2005, 107, 4; 570-575
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Positron Lifetime in Hostaphan
    Autorzy:
    Kostrzewa, M.
    Bujnarowski, G.
    Kluza, A. A.
    Szuszkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047137.pdf
    Data publikacji:
    2006-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.70.Bj
    71.60.+z
    61.41.+e
    Opis:
    Positron lifetime measurements in hostaphan RNK, used for encapsulation of $\text{}^{22}$Na positron sources, were performed. It was found that the parameter of positron lifetime spectra in hostaphan RNK differ markedly from those for other forms of polyethylene terephthalate. The maximum penetration depth of positrons from RNK hostaphan amounts 0.42 mm. The information gained in the present study is of great importance for experimenters using hostaphan RNK for encapsulation of positron sources.
    Źródło:
    Acta Physica Polonica A; 2006, 110, 5; 615-620
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Positron Annihilation in Steel Samples Deformed by Uniaxial Tension
    Autorzy:
    Rudzińska, W.
    Szuszkiewicz, M.
    Bujnarowski, G.
    Kluza, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1812548.pdf
    Data publikacji:
    2008-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.70.Bj
    Opis:
    Angular distributions of the positron annihilation quanta were measured for steel ST2 SAL samples deformed by uniaxial tension up to different deformation degrees. The dependences of the S parameter on the relative elongation of the samples are presented. The positron annihilation data for steel are compared with the results obtained previously for polycrystalline iron samples deformed by uniaxial tension up to different deformation degrees in the proportionality and limited proportionality regions.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 5; 1507-1510
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Positron Annihilation in Polycrystalline Metals Deformed by Uniaxial Tension
    Autorzy:
    Rudzińska, W.
    Pająk, J.
    Szuszkiewicz, M.
    Bujnarowski, G.
    Kluza, A. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2043362.pdf
    Data publikacji:
    2005-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.70.Bj
    Opis:
    Angular distributions of the positron annihilation quanta were measured for polycrystalline samples deformed by uniaxial tension up to different deformation degrees. The S parameter as a function of the W parameter was determined. The data obtained for samples elongated up to different elongation degrees indicate that in the proportionality and limited proportionality regions the changes in the physical properties of samples are governed mainly by generation of vacancies and formation and kinetics of transformations of vacancy clusters occurring first of all on the grains of monocrystallites. In the region of plastic deformations the dominant defects are dislocations and vacancies and their aggregates generated due to the formation and movement of the dislocation of the primary and secondary slip. The positron annihilation data are corroborated by the results of the resistometric and tensometric measurements in the proportionality and limited proportionality regions.
    Źródło:
    Acta Physica Polonica A; 2005, 107, 5; 857-863
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Positron Annihilation in Metals Defected by Action of the Tensile Force
    Autorzy:
    Rudzińska, W.
    Pająk, J.
    Szuszkiewicz, M.
    Bujnarowski, G.
    Kluza, A. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047160.pdf
    Data publikacji:
    2006-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.70.Bj
    Opis:
    Results of experimental investigations of uniaxially elongated mono- and polycrystalline samples of several metals (Fe, Ta, Pd, Ag, and Au), performed using the positron annihilation methods, are reviewed. The dependences of the S-parameters and positron lifetimes on the relative elongation of the samples were presented. The data obtained for polycrystalline samples indicate that in the proportionality and limited proportionality regions the changes in the physical properties are governed mainly by generation of vacancies and by kinetics of formation and transformations of vacancy clusters occurring first of all on the grain boundaries of monocrystallites. In the region of plastic deformations the dominant defects are dislocations and vacancies and their aggregates generated due to the formation and movement of the dislocations of the primary and secondary slip. In the case of monocrystalline samples it was found that the dynamics of the dislocations and vacancy generation during the sliding of some crystallographic planes depends on the crystallographic direction.
    Źródło:
    Acta Physica Polonica A; 2006, 110, 5; 691-699
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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