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91.
用重量法、容量法和放射性示踪法测定了氯化铯和三氯化锑在冰醋酸介质中形成的复盐的组成,初步确定为7CsCl·5SbCl3。并且发现该复盐在一定条件下,经过适当时间可能逐渐向4CsCl·3SbCl3转变,而不是向3CsCl·2SBCl3转变.研究了两种复盐7CsCl·5SbCl3和3CsCl3·2SbCl3在冰醋酸和9.965N盐酸中的溶解动力学,分別绘出它们的溶解动力学曲线。结果指出,除了3CsCl·2SbCl3复盐在9.965N盐酸中是稳定的外,7CsCl·5SBCl3复盐在冰醋酸和9.965N盐酸中以及3CsCl·2SbCl3复盐在冰醋酸中均不稳定。也作了7CsCl·5SBCl3和3CsCl·2SbCl3两种复盐的初步热重分析和显微结晶观察,绘出了热重分析曲线,并计算了两个大平台部分的残重百分数。这些结果也指出两种复盐显然不同。 相似文献
92.
A recombination model of subquarks for superhigh energy collision is proposed.The new phenomena observed in experiments of superhigh energy cosmic ray can be explained naturally via the cascade decay of superfireballs of subquark stratum from this model.The mean multiplicity,the average transverse momentum,the distributions of both transverse and longitudinal momenta and the inclusive spectrum for the superhigh energy collision are obtained based on this model.It is shown that if the mean multiplicity of secondary particles increases as S increases according to the power law,the scaling violation should take place.Espe-cially,when the behavior of mean multiplicity changes from s+ to S+ there will be a significant jump of violation coofficient and the scaling violation.wil1 become more significant as S in-creases.It is also pointed out that the characteristic behavior of the existence of subquark stratum for the inclusive distribu-tion is almost model-independent and can be treated as a decided experimental verification of the appearance of subquark stratum,in particular,for the experiments with accelerator in the near future. 相似文献
93.
We discuss in this paper a stellar model of degenerate massive neutrinos with a core made of heavy matter. Dimension of the core is much smaller than the scale of neutrino star. The Oppenheimer-Volkoff equation is solved for such a system. Our calculation shows that under certain conditions, this neutrino halo will resemble a pure neutrino star. We have further obtained insides the neutrino star (or halo) the rdtation curve and the gravitational red shifts. It is interesting to note that the relative rotation velocity v(r)EV(r)/V(R) (R is the radius of the neutrino star) depends only on the relative coordinate ξ=r/R in the nonrelativistic cases. Therefore, all nonrelativistically degenerate neutrino systems will have a universa1 relative rotation curve(v versus ξ). Within the accuracy of numeri calcalculation, we have also obtained a useful relation connecting the maximum velocity Vm and the corresponding coordinate Rm as VmRm2=0.231. By comparing this relation with the observed rotation data at large distances for some galaxies, we have obtained an upper bound for neutrino mass of about 6-9eV. 相似文献
94.
By using a highly accurate variational wave function with 50 parameters for hydrogen molecule[4] and the wave function of HeH+ used by Wolniewicz with 64 parameters[5], the behavior of the β-spectrum of H-T→ HeH++β-+νe is discussed. The spectral shape thus obtained deviates remarkably from the β-spectrum of an atomic triton, and hence is different from the for mula used by Lyubimov et al. in determining the neutrino mass. This means that the "atomic approximation" is invalid in describing the molecular β-spectrum of valine, and the conclusion about the value of neutrino mass based upon the analysis of β -spectrum of valine also cannot be regarded as a reliable one. Therefore, in order to obtain ari accurate value of neutrino mass from the β-spectral shape, it is important to investigate the structure of the radioactive source, from which the corection has arisen. 相似文献
95.
By direct calculation of rotation matrices of SO(3), we show how certainspecific sequence of eight consecutive rotations of digital angles can yielda tilting of a facet mirror. We also design a detailed program specificallyto tilt an array of mirrors from planar orientation to the required focusingorientation. We describe how to use the 8-step to realize the focusing ofthe mirror array. We have found, in our designed program, an importantfeature of row-sharing during the rotations for the columns and similarlythe column-sharing during the rotations for the row. This feature can save alot of operating time during the actual realization of the mechanicalmovements. 相似文献
96.
It is shown that the mixing effect between the Z0 and the toponium will significantly affect various properties of toponium state. 相似文献
97.
In evaluating the β-spectrum of atomic H3 a more accurate formula is obtained. in which the first three transitions leading to the Lowest three states of 3He+ are treated exactly, and the cJosure approximation is used to estimate the contribution from all excited states with n>3.The formula obtained is compared with what is used by Lyubimov et al.[1] in determining the neutri-no mass. As a result it has been shown that the formula used by Lyubimov et al. does not yield an adequate accuracy. Especially the end-point energy they obtained may differ from the true value by 13.6 ev, which would cause an uncertainty of the same order inthe value of the neutrino mass. 相似文献
98.
On the basis of previous papers,this work discusses the theory of composite fields composed of colored stratons.Varicus equivalent representations of the S-matrix elements are given.The formulae for the transition matrix elements between states involving baryons in the theory of Straton Model are derived.Finally,the field- current relations are extended to spin 1/2 baryons and their applications are discussed. 相似文献
99.
In this paper we introduce the concept of "same order" in the perturbution expansion of the quatized composite field theory which is different from single particle theory. For example, in the case of Q. E. D., "same order" is defined by means of a coupling constant, but here it closely relates the operators occuring in the B. S. equations. Feymann graphs of the "same order" are defined for different kinds of transitions in the composite field theory. Finally, we prove that guage invariance is a natural result as long as all "same order" Feymann graphs are calculated for an electromagnetic transition between composite particles. 相似文献
100.