Autor: Panta, P. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Specific heat of selected graphites used in calorimetry of electron beam and its influence on the accuracy of measurement of large dose
Autorzy:: Panta, P.
Głuszewski, W.
Powiązania:: https://bibliotekanauki.pl/articles/147858.pdf
Data publikacji:: 2005
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: radiation processing
radiation sterilization
electron beam (EB)
high dose calorimetry
calibration
electron energy
Opis:: Calorimetry is applicable to both absolute calibration of routine dosimeters and absolute measurements of electron beam (EB) intensity (for industrial radiation processing). Advantages of graphite as the absorbing calorimetric material are a good heat capacity and negligible heat defect of this material. Knowledge of the specific heat capacities of the calorimetric core materials is fundamental in making absolute dose measurements. Two kinds of high-purity graphite used in calorimeters were analysed, i.e. Union Carbide grade AGOT and nuclear grade graphite [10]. There are some differences of specific heat of these graphites, up to 2% , which influence dosimetric response of calorimeters made of them.
Źródło:: Nukleonika; 2005, 50,suppl.2; 55-57
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Structural and Mössbauer effect studies of Dy(Fe0.4Co0.6-x Alx)2 intermetallics
Autorzy:: Stoch, P.
Pszczoła, J.
Suwalski, J.
Pańta, A.
Powiązania:: https://bibliotekanauki.pl/articles/148809.pdf
Data publikacji:: 2003
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: crystal structure
hyperfine interactions
Mössbauer spectroscopy
rare earth
Slater-Pauling curve
transition
Opis:: The magnetic hyperfine fields observed at the 57Fe nuclei (77 K) in the Dy(Mn1-xFex)2 and Dy(Fe1-xCox)2 intermetallics form a Slater-Pauling curve. In order to study the effect of cobalt atoms on crystal structure and hyperfine interactions, the new Co/Al substituted series Dy(Fe0.4Co0.6-xAlx)2 was prepared and data of X-ray powder analysis are presented (300 K). From the 57Fe Mössbauer measurements at 77 K the hyperfine parameters were obtained. The magnetic hyperfine fields form a branch of the Slater-Pauling curve.
Źródło:: Nukleonika; 2003, 48,suppl.1; 75-77
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Mössbauer effect studies of Dy(Fe0.7-xNixCo0.3)2 intermetallics
Autorzy:: Jabłońska, A.
Suwalski, J.
Pszczoła, J.
Guzdek, P.
Stoch, P.
Pańta, A.
Powiązania:: https://bibliotekanauki.pl/articles/147231.pdf
Data publikacji:: 2004
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: intermetallics
crystal structure
57Fe Mössbauer effect
hyperfine interactions
Slater-Pauling curve
band structure
Opis:: Abstract A consequence of the Fe/Ni substitution in the series of Dy(Fe0.7 xNixCo0.3)2 was studied in the presented paper. The synthesis and X-ray analysis (300 K) of the Dy(Fe0.7 xNixCo0.3)2 system were performed. The cubic, MgCu2-type, Fd3m crystal structure was evidenced for this solid solution. 57Fe Mössbauer effect measurements for the system were carried out at 77 K. The obtained crystallographic lattice parameters and the hyperfine interaction data are presented. The magnetic hyperfine field values form a separate branch of the Slater-Pauling curve situated above the branch corresponding to the Dy(Fe1 xCox)2 intermetallics.
Źródło:: Nukleonika; 2004, 49,suppl.3; 85-88
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Mössbauer effect studies of Dy(Fe0.4-xNixCo0.6)2
Autorzy:: Jabłońska, A.
Suwalski, J.
Stoch, P.
Pszczoła, J.
Guzdek, P.
Szamański, P.
Pańta, A.
Powiązania:: https://bibliotekanauki.pl/articles/148209.pdf
Data publikacji:: 2007
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: crystal structure
Mössbauer effect
hyperfine interaction
Slater-Pauling curve
band structure
Opis:: A consequence of the Fe/Ni substitution in the Dy(Fe0.4Co0.6)2 compound was studied in the present paper. For this purpose the synthesis and X-ray analysis (295 K) of the Dy(Fe0.4 xNixCo0.6)2 series were performed. The cubic, MgCu2-type, Fd3m crystal structure was observed across the series. 57Fe Mössbauer effect spectra for the series were collected at 77 K. The obtained crystallographic data and the hyperfine interaction parameters are presented. The magnetic hyperfine fields form a separate branch of the Slater-Pauling curve known for the Dy(Mn1 xFex)2 and Dy(Fe1 xCox)2 series. The data are qualitatively related to the Stoner model.
Źródło:: Nukleonika; 2007, 52, supl. 1; 55-58
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Mössbauer effect studies of Dy(Mn0.4-xAlxFe0.6)2 intermetallics
Autorzy:: Stoch, P.
Pszczoła, J.
Guzdek, P.
Jabłońska, A.
Suwalski, J.
Dąbrowski, L.
Pańta, A.
Powiązania:: https://bibliotekanauki.pl/articles/147206.pdf
Data publikacji:: 2004
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: intermetallics
crystal structure
57Fe Mössbauer effect
hyperfine interactions
Slater-Pauling curve
Opis:: Both 3d subbands in the Dy(Mn0.4Fe0.6)2 compound are filled up only partially with 3d electrons. So, it was interesting to study the consequence of Mn/Al substitution in the Dy(Mn0.4 xAlxFe0.6)2 series. The cubic, MgCu2-type, Fd3m crystal structure was observed across the series. However, for x = 0.35 and 0.40 a stoichiometric admixture of the hexagonal, MgZn2-type, P63/mmc structure was evidenced. Mössbauer effect measurements at 57Fe nuclei were performed at 77 K. The magnetic hyperfine field decreases vs. the aluminium content x. This dependence is related to the possible 3d-electron band structure.
Źródło:: Nukleonika; 2004, 49,suppl.3; 23-25
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

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