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Vliv magnetické susceptibility na T1 relaxace 129Xe.
Bartušek, Karel ; Rychnovský, Jan
Every substance has its own susceptibility, which can affect homogenous magnetic field in magnetic resonance measuring. Local homogenous magnetic field deformation reduces T1 and T2 relaxation times of measured materials. By the laboratory glasses magnetic susceptibilities measurement, we obtained theirs walls influence to thermally polarized 129Xe T1 relaxation times.
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Fenomén nehomogenity materiálu v NMR
Fiala, P. ; Kroutilová, E. ; Steinbauer, M. ; Dohnal, P. ; Bartušek, Karel
This article deals with the verification of experimental results obtained by numerical simulation. We solved the effect of changes in the homogeneity of magnetic fields evoked by different samples from conductive and/or magnetic materials and the different types of inhomogeneity in the MR tomograph. Moreover, the paper will describe the suitable magnetic resonance techniques.
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Jednoduchá numerická simulace vnitřní struktury částicového testu
Bartušek, Karel ; Fiala, P.
The basic configuration of the electron beam was verified in Institute of Scientific Instruments Academy of Sciences of the Czech Republic experimentally. We prepared the numerical model which is based on the particle theory. Actually, it respects classical Electrodynamics Material Wave Theory (MWT). Numerical results were evaluated. The second model was prepared in respect to theory of wave packet (Louis de Broglie) and solved again. Results of both models were the same in their quality, we evaluated electric field intensity E on the electron impact area, and they corresponded with results from experiments.
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Měření pole vzdušných iontů
Bartušek, Karel ; Fiala, P. ; Bachorec, T. ; Kadlecová, E.
An analysis of the electric state of air shows the presence of various ion sorts. The therapeutic effect of negative high-mobility ions of proper concentration is known. This positive effect was observed in caves that are used for speleotherapy. This article presents the capability of methods for measuring ion concentration and for ion spectral analysis.
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