Autor: Milczarek, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Determination of Capillary Motion of Water in Bricks Using Neutron Radiography
Autorzy:: Czachor, A.
El-Ghany El-Abd, Abd
Milczarek, J. J.
Powiązania:: https://bibliotekanauki.pl/articles/2035490.pdf
Data publikacji:: 2002-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.05.Rm
28.20.-v
47.55.Mh
Opis:: Vertical migration of water in several porous materials has been directly observed and recorded with the recently installed neutron and gamma radiography facility at the MARIA reactor of Institute of Atomic Energy, Świerk. The density profiles of water in samples were obtained from the optical density of digitised images. A simple model (representing the porous material as the collection of capillary tubes of various radii) has been introduced to describe the liquid transport in porous materials in terms of capillary motion. The equation for viscous movement of water in porous material in presence of the gravitation is proposed. A good agreement of the calculated density profiles for vertical water migration with the data collected for siliceous bricks suggests that the thinnest capillary tubes determine the upper edge of the water density profile.
Źródło:: Acta Physica Polonica A; 2002, 102, 2; 245-252
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Materials Research on Archaeological Objects Using PIXE and Other Non-Invasive Techniques
Autorzy:: Miśta, E.
Stonert, A.
Korman, A.
Milczarek, J.
Fijał-Kirejczyk, I.
Kalbarczyk, P.
Wiśniewska, A.
Powiązania:: https://bibliotekanauki.pl/articles/1402188.pdf
Data publikacji:: 2015-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.05.Bx
82.80.Ej
82.80.Dx
82.80.Ms
82.80.Pv
Opis:: An interdisciplinary study of metallic objects from selected archaeological sites in Poland was performed. The aim of the project was to obtain information about the chemical composition and structural changes of the objects. Furthermore, the research results provided information about the technological process which was used to manufacture the artifacts. The materials research had a non- and micro-invasive character which is very important in this type of investigation. The main experimental tools were particle-induced X-ray emission supplemented with nuclear reaction thermal neutron (white beam) radiography, scanning electron microscopy with X-ray energy dispersive analysis, and laser ablation inductively coupled plasma mass spectrometry techniques. The results show that the artifacts were made by a secondary smelting process used in local metallurgy manufactures.
Źródło:: Acta Physica Polonica A; 2015, 128, 5; 815-817
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Application of Neutron Refraction for Characterization and Optimization of High-Damping Iron-Based Alloys
Autorzy:: Udovenko, V. A.
Polyakova, N. A.
Chudakov, I. B.
Milczarek, J. J.
Mikke, K.
Powiązania:: https://bibliotekanauki.pl/articles/2011037.pdf
Data publikacji:: 1999-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.12.-q
75.50.Bb
75.60.Ej
75.80.+q
Opis:: High-damping alloys with the magnetomechanical damping mechanism, based on the Fe-Cr system, have been studied. It has been shown that the direct investigation of the magnetic domain structure in the bulk materials using the neutron refraction method allows one to obtain important quantitative information concerning the formation of the high-damping state. The dependence of the damping capacity on the average magnetic domain size was found to possess a sharp maximum, thus revealing a range of the optimal domain sizes. The results obtained are important for the development of the technology of high-damping materials.
Źródło:: Acta Physica Polonica A; 1999, 96, 2; 303-306
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Temperature Dependence of Magnetic Inelastic Neutron Scattering in Mn(12%Ge) Alloy
Autorzy:: Jankowska-Kisielińska, J.
Mikke, K.
Milczarek, J. J.
Hennion, B.
Udovenko, V. A.
Powiązania:: https://bibliotekanauki.pl/articles/1956523.pdf
Data publikacji:: 1997-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.30.Ds
75.50.Ee
Opis:: A systematic study of temperature dependence of magnetic inelastic neutron scattering for itinerant antiferromagnet Mn(12%Ge) is presented. At low temperatures the experimental data are well described in terms of damped spin waves. This description becomes insufficient at least 150 K below T$\text{}_{N}$. In the temperature range 200-400 K the integrated intensity of distribution for energy transfer 13 THz increases by one third and the shape of the deconvoluted neutron scattering cross-section changes. These changes suggest that ca. 200 K below T$\text{}_{N}$ an additional contribution to the inelastic neutron scattering starts to appear and that its origin is different from spin waves.
Źródło:: Acta Physica Polonica A; 1997, 91, 2; 483-486
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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