Autor: Szymański, J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Laser ablated carbon plume : experiment and modelling
Autorzy:: Moscicki, T.
Hoffman, J.
Szymanski, Z.
Powiązania:: https://bibliotekanauki.pl/articles/146429.pdf
Data publikacji:: 2012
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: laser ablation
plasma plume
Opis:: Laser ablation of graphite is studied both theoretically and experimentally. Plasma temperature and electron density in the early phase of expansion into vacuum are measured as a function of distance from the target. The experimental results agree well with the theoretical simulations. The simulation of ablation shows that plasma plume considerably affects the ablation rate.
Źródło:: Nukleonika; 2012, 57, 2; 283-286
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Mössbauer study of the Fe1-xNix Invar alloys by monochromatic circularly polarized source
Autorzy:: Satuła, D.
Szymański, K.
Dobrzyński, L.
Rećko, K.
Waliszewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/148805.pdf
Data publikacji:: 2003
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: Invar alloys
Mössbauer polarimetry
transition metal alloys
Opis:: X-ray diffraction measurements and Mössbauer spectroscopy with and without external magnetic field parallel to beam direction have been performed for Fe1-xNix (x = 0.25, 0.30, 0.35) alloys. The compositions of the studied alloys were chosen in order to cover the concentration range where the fcc - bcc structural transformation appears, as well as where single phase fcc Fe-Ni alloys exhibit the Invar phenomena. Spatial distribution of the iron magnetic moments is discussed. The hyperfine magnetic field (h.m.f.) distribution is analyzed within a scope of two models discussed in the literature. In the first model it is assumed that any hyperfine magnetic filed vector have the same spatial distribution (the same values of (). In the second, the low field component of the hyperfine magnetic field is ordered antiferomagnetically (or disordered) while the high field component is aligned by an external magnetic field. In order to determine the mean values of cosine of the angle between teta-rays direction and hyperfine field vector of iron, (), a monochromatic circularly polarized Mössbauer source (MCPMS) was used. The analysis of the MCPMS results show that the shapes of the measured spectra can be explained by single values of .
Źródło:: Nukleonika; 2003, 48,suppl.1; 71-74
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Mössbauer studies of single crystal gamma-Mn-Fe
Autorzy:: Szymański, K.
Olszewski, W.
Dobrzyński, L.
Satuła, D.
Jankowska-Kisielińska, J.
Powiązania:: https://bibliotekanauki.pl/articles/147239.pdf
Data publikacji:: 2004
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: gamma-Mn-Fe alloys
iron alloys
manganese alloys
Mössbauer spectroscopy
Opis:: Mössbauer measurements were performed on single crystals gamma-Mn60Fe37Cu3 in an external field of 1.3 T at room temperature. The hyperfine field distribution can be described as a vector sum of the external and internal fields. In addition, anisotropic response of magnetic moments was detected. The anisotropy, due to Fe atoms, has Fe-rich surroundings.
Źródło:: Nukleonika; 2004, 49,suppl.3; 75-78
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Hyperfine interactions in (Cr0.9957Fe0.01)3 + xSi1 - x
Autorzy:: Satuła, D.
Szymański, K.
Olszewski, W.
Kalska-Szostko, B.
Waliszewski, J.
Rećko, K.
Powiązania:: https://bibliotekanauki.pl/articles/147344.pdf
Data publikacji:: 2013
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: A15 structure
Cr-Fe-Si alloys
Mössbauer spectroscopy
X-ray diffraction
Opis:: X-ray diffraction measurements and Mossbauer spectroscopy with external magnetic field were carried out on (Cr0.99 57Fe0.01)3+xSi-x alloys. The Mossbauer spectra for A15 type of structure can be described by superposition of single line S(1) and two doublets D(1) and D(2). The relative ratio of the S(1) and D(2) strongly depends on x. The nearest neighbours of these components have been identified. It was shown that 57Fe atoms preferentially locate in Cr positions for x less-than or equal to 0.0, while for x greater 0.0 iron atoms are distributed both in Cr and Si positions. It was shown that, in A15 structure, one Cr atom located in the 57Fe nearest neighbours (n.n.) decreases isomer shift by (0.022 plus or minus 0.002) mm/s, while one Si in n.n. increases isomer shift by (0.09 plus or minus 0.01) mm/s. The measured Mossbauer spectra of bcc Cr-Si indicate that atoms are randomly distributed and can be well described as superposition of single lines, related to various local environments of 57Fe atoms.
Źródło:: Nukleonika; 2013, 58, 1; 73-76
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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