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851.
V.I. Marakhonov N.A. Rogachev E.I. Terukov J.T. Ishkalov I.N. Trapeznikova 《Physica B: Condensed Matter》1991,170(1-4):571-573
Magnetron assisted silane decomposition (MASD) is proposed as a method for deposition of a-Si:H and its alloys. In this method a silane containing gas mixture is passed through the magnetron plasma near a target and decomposed there. The deposition rate in the case of the c-Si target is increased 3 times compared to magnetron sputtering and film properties are changed. a-SiSn:H is obtained with a Sn target. 相似文献
852.
An all-fibre interferometer which allows the measurement of the movement (speed and distance) of a vibrating body is presented. An electronic signal processing scheme is used and this is contrasted with the measurement of velocity through an optical processing technique, which is however, more complex and expensive to implement. The overall simplicity of the electronic technique, the low cost of components and the use of an all-fibre arrangement make this an attractive system to implement where the more limited information available is sufficient for monitoring purposes. 相似文献
853.
A. G. Bakan 《Mathematical Notes》1991,50(5):1103-1106
Translated from Matematicheskie Zametki, Vol. 50, No. 5, pp. 18–22, November, 1991. 相似文献
854.
Ferric ferrocyanides synthesized from different sources of ferric cations and ferrocyanide anions and those derived from ferrous ferricyanide, ferrous ferrocyanide and ferric ferricyanide have been studied using Mössbauer and XRD techniques. Structural information of the effect of the provenance on the properties of the final compound is obtained. Significant correlations between isomer shift and quadrupole splitting of inner and outer iron cations have been observed. 相似文献
855.
Techniques of uniformization are used to prove that it is not consistent that the Whitehead groups of cardinality ℵ1 are exactly the strongly ℵ1-free groups. Some consequences of the assumption that every strongly ℵ1-free group of cardinality ℵ1 is Whitehead are derived. Other results about uniformization are also proved.
Research partially supported by NSERC grant #9848.
Research partially supported by the BSF. The authors thank Rutgers University for its support. Publication #441. 相似文献
856.
A. G. Nikitin 《Ukrainian Mathematical Journal》1991,43(11):1413-1418
The complete set of symmetry operators of an arbitrary order associated with the Schrödinger equation is found. It is shown that this equation is invariant with respect to a 28-dimensional Lie algebra, realized in the class of differential operators of the second order. Higher-order symmetries of the Levi-Leblond equation are investigated.Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 43, No. 11, pp. 1521–1526, November, 1991. 相似文献
857.
V. A. Ginzburg 《Functional Analysis and Its Applications》1992,26(1):51-52
The Institute of the Earth Physics, Academy of Sciences of the USSR. Translated from Funktsional'nyi Analiz i Ego Prilozheniya, Vol. 26, No. 1, pp. 64–66, January–March, 1992. 相似文献
858.
S. A. Merkulov 《Functional Analysis and Its Applications》1992,26(1):72-73
Branch of Theoretical Problems, USSR Academy of Sciences, Translated from Funktsional'nyi Analiz i Ego Prilozheniya, Vol. 26, No. 1, pp. 89–90, January–March, 1992. 相似文献
859.
We generalize a method for determination of time scales of nonstationary diffusion in a one-dimensional medium. The time of relaxation to a stationary non-equilibrium density of substance in a system with a source, a sink, and an arbitrary potential profile are obtained and studied in detail. A few specific examples are considered. 相似文献
860.
Mössbauer effect studies of Pt3−xFe1+x fcc ordered alloys in the range 4.2 K <T<300 K, in zero and in external magnetic field, for samples with x = 0.16 to 0.28, are reported. The low-temperature spectra show several satellite lines which are related to different excess-Fe nearest-neighbor configurations. Experiments in external fields give information on the different local spin structure at different concentrations. 相似文献