Temat: 42.40.Kw - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Secondary Radiation Field Effects for the CEM Spectra
Autorzy:: Ruebenbauer, K.
Błachowski, A.
Żukrowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/1537767.pdf
Data publikacji:: 2010-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.80.+y
82.80.Ej
23.20.Nx
42.40.Kw
Opis:: The secondary resonant radiation field and resonant absorption thickness effects on the Conversion Electron Mössbauer Spectroscopy spectra are analyzed for highly enriched resonant targets. It is shown that secondary field effect is important for the thick α-Fe foil enriched in the resonant isotope. Even for the polycrystalline sample traces of the coherent resonant field have been detected as the distortion of lines. Secondary field is discussed in detail. Suitable approximations to treat spectra originating from targets with significant resonant thickness developing secondary field composed of the incoherent and coherent parts are introduced. Finally, the formalism is applied to the high quality spectrum recorded for the enriched iron foil and correlation between contribution due to the secondary field and experimental line shape is investigated.
Źródło:: Acta Physica Polonica A; 2010, 117, 6; 953-961
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Holographic Measurement of Dental Tissue Contraction and Stress, due to Postpolymerization Reaction
Autorzy:: Pantelić, D.
Blažić, L.
Savić-Šević, S.
Murić, B.
Vasiljević, D.
Panić, B.
Belić, I.
Powiązania:: https://bibliotekanauki.pl/articles/2047904.pdf
Data publikacji:: 2007-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.40.Kw
87.85.G-
87.15.rp
87.10.Kn
Opis:: Polymerization contraction of dental photo-polymer composites induces internal stress, in a tooth cavity. This stress is measured indirectly by, first, holographic determination of tooth deformation, with consequent calculation of stress using finite element method. Real time holographic technique enabled observation of dental deformation in all stages of polymerization. Specially constructed blue-LED light source was used to polymerize photopolymer composite. We have found that polymerization continues even after illumination is over. Consequently, stress is increased, too.
Źródło:: Acta Physica Polonica A; 2007, 112, 5; 1157-1160
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Acquisition of the Surface Morphology of Ruled Gratings with a Microscope Objective
Autorzy:: Li, Z.
Ma, L.
Liu, C.
Zhang, M.
Chen, X.
Cheng, C.
Powiązania:: https://bibliotekanauki.pl/articles/1189791.pdf
Data publikacji:: 2015-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.30.Kq
42.87.-d
42.79.Dj
42.40.Kw
Opis:: In this paper, an optical microscope objective with large numerical number is inserted into a Mach-Zehnder interferometer, and this system is adopted to detect the surface morphologies of two ruled transmission gratings with area scale to a micrometer. The object waves transmitting from the gratings interfere with spherical reference wave, and the interferograms constructed are recorded by a high-resolution CCD. The surface maps of the gratings are retrieved from the interferograms, and the results are confirmed by the measurement with an atomic force microscope, with detection errors in nanometer scale. This work provides an optical non-destructive method for precise detection of small-area sophisticated object surfaces with an optical microscope objective.
Źródło:: Acta Physica Polonica A; 2015, 127, 6; 1630-1633
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja