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1.
A. B. Malinin N. V. Kurenkov M. D. Kozlova A. S. Sevastyanova 《Journal of Radioanalytical and Nuclear Chemistry》1988,126(1):17-25
A procedure has been worked out for the preparation of chloroplatinic acid from natural metallic platinum irradiated in a nuclear reactor and purified from199Au impurities by extraction from acidic solutions with ethyl acetate. It was shown that the effective K X-ray activity of natural platinum on irradiation with moderate neutron fluxes /3×1013/ was comparable with that of195mPt obtained from 100%194Pt/with identical neutron fluxes/. Contaminations from193Pt /50 years/ is insignificant and do not produce noticeable radiation loads on the organism on medical tests in vivo. 相似文献
2.
Three basic cases of LPE growth with and without nucleation were examined. The expressions for layer thickness and growth efficiency calculations were developed. Criteria for LPE growth classification were obtained. It was shown the nucleation takes place at critical values of supersaturation of the solution. The values of critical supersaturation may be calculated from growth efficiency experimental data for LPE growth. 相似文献
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Spectroscopic diagnostics of barrier discharge plasmas in mixtures of zinc diiodide with inert gases
The spectral characteristics of the emission of gas discharge atmospheric pressure plasmas in mixtures of zinc diiodide vapor with inert gases (He, Ne, Ar, Kr, and Xe) are investigated. The formation of a gas discharge plasma and the excitation of the components of a working mixture were performed in a high-frequency (with a repetition frequency of sinusoidal voltage pulses of 100 kHz) barrier discharge. The gas discharge emission was analyzed in the spectral range 200–900 nm with a resolution of 0.05 nm. Emission bands of ZnI(B-X) exciplex molecules and I2* excimer molecules, lines of inert gases, and emission bands of XeI* exciplex molecules (in Xe-containing mixtures) were revealed. It is ascertained that the strongest emission of ZnI* molecules is observed in ZnI2/He(Ne) mixtures. The regularities in the spectral characteristics of the gas discharge plasma emission are considered. 相似文献
6.
A. G. Malinin 《Physics of Atomic Nuclei》2004,67(11):2044-2049
The main physics goals of the AMS-02 experiment in the astroparticle domain are searches for antimatter and dark matter. The discovery potential of primordial antimatter by AMS-02 is presented, emphasizing the completeness of the AMS-02 detector for these searches. Meanwhile, antiproton detection suffers from a large secondary interaction background; the anti-4He or anti-3He signal would allow one to probe the Universe for existence of antimatter. The expected signal in AMS-02 is presented and compared to results from present experiments. The e+ and antiproton channels will contribute to the dark matter detection studies. A SUSY neutralino candidate is considered. The expected flux sensitivities in a three-year exposure for the e+/e? ratio and antiproton yields as a function of energy are presented and compared to other direct and indirect searches. 相似文献
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D. A. Malinin 《Algebras and Representation Theory》2003,6(2):215-237
For a given field F of characteristic 0 we consider a normal extension E/F of finite degree d and finite Abelian subgroups GGL
n
(E) of a given exponent t. We assume that G is stable under the natural action of the Galois group of E/F and consider the fields E=F(G) that are obtained via adjoining all matrix coefficients of all matrices gG to F. It is proved that under some reasonable restrictions for n, any E can be realized as F(G), while if all coefficients of matrices in G are algebraic integers, there are only finitely many fields E=F(G) for prescribed integers n and t or prescribed n and d. 相似文献
8.
V. K. Dolganov E. I. Kats S. V. Malinin 《Journal of Experimental and Theoretical Physics》2001,93(3):533-541
Experimental data on the optical reflectance of free-standing smectic C films were analyzed within the framework of a phenomenological Landau approach. At a certain temperature T 0N (determined from experimental data), which exceeds the known temperature T c of the volume phase transition from smectic A to smectic C state, a surface phase transition takes place whereby molecules in the surface layer become sloped relative to the normal of the smectic layers. The transition temperatures T 0N s,a for N-layer films possessing synclinic (symmetric) and anticlinic (antisymmetric) textures of the order parameter (tilt angle θ) were determined. A comparison of the theoretical and experimental data allowed all parameters of the model to be determined (including critical indices of the correlation length and the surface order parameter). Three possible models of the transition from the state with transverse polarization (perpendicular to the molecular tilt plane) to the state with longitudinal polarization (parallel to this plane) are analyzed. The transition takes place at low (°–°) values of the order parameter θ in the middle layer of the film. 相似文献
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 121–139, February, 1990. 相似文献