Statistical expression of vapour pressure equations of metals is derived from the Debye model. The statistical distribution of T_(-p) ensemble is presented in an in-elab- orate mode and the partition function is defined.

Starte from Lindemann’s law,the melting temperature of 4 alkali metals (Li,Na,K and Cs)under high pressure are fitted and calculated using the Debye model andVinet equation. The calculated results are compared with that obtained by Simon eua-tion.

Based on Lindemann's law and the Debye model,the pressure dependence of melting temperature of rare gas solids have been argued recently. The expression is finally decided by the second Grüneisen parameter q. In this paper,a new form of q for rare gas solids different from that of the prior work is presented.

Statistical expression of vapour pressure equations of metals is derived from the Debye model. The statistical distribution of T_(-p) ensemble is presented in an in-elab- orate mode and the partition function is defined.

Starte from Lindemann’s law,the melting temperature of 4 alkali metals (Li,Na,K and Cs)under high pressure are fitted and calculated using the Debye model andVinet equation. The calculated results are compared with that obtained by Simon eua-tion.

This paper deals with the energy shift of average-ion by the average-ion Debye model. It takes place of the ion-sphere model in the screened hydrogenic theory by the average-ion Debye model,and calculates the electron densities in weekly non-ideal argon plasmas of shock-generated.

Based on Lindemann's law and the Debye model,the pressure dependence of melting temperature of rare gas solids have been argued recently. The expression is finally decided by the second Grüneisen parameter q. In this paper,a new form of q for rare gas solids different from that of the prior work is presented.

To calculate the phonon thermal conductivity at low temperature, Gauss-Legendre formula and Laguerre formula are used to convert the integral into algebra sum.

On the basis of a large number of experiments, the following theoretical problems have been solved: (1) Starting from Debye's model of atomic specific heat of simple solid, the concept of optimum temperature increment △T in Specific heat measurement at low temperature and its equation was suggested;

In estimating the heat capacity of the lattice, use is made of the Debye model with due regard for the temperature dependence of the Debye temperature.

The speed of sound in liquid lithium has been estimated within the Debye model.

The parameters of this scattering can be determined within the Debye model of thermal conductivity from a comparison of samples differing in their isotope composition.

The temperature dependence of the thermal conductivity of bismuth tellurite is calculated in the framework of the Debye model.

A quantitative description of the results obtained is performed within the Debye model of thermal conductivity and allows for the fact that the mean free path of phonons cannot be less than half the phonon wavelength.

In estimating the heat capacity of the lattice, use is made of the Debye model with due regard for the temperature dependence of the Debye temperature.

The speed of sound in liquid lithium has been estimated within the Debye model.

The parameters of this scattering can be determined within the Debye model of thermal conductivity from a comparison of samples differing in their isotope composition.

The temperature dependence of the thermal conductivity of bismuth tellurite is calculated in the framework of the Debye model.

A quantitative description of the results obtained is performed within the Debye model of thermal conductivity and allows for the fact that the mean free path of phonons cannot be less than half the phonon wavelength.

An adiabatic calorimeter has been developed for measuring specific heat of solids at low temperatures. Bismuth of high purity and OFHC are used as measuring samples ia temperature range, 13.81-273.15K. A comparison is made between the values of specific heat obtained by us and the data collected by TPRC of Purdue University ia U.S.A., the deviations obtained being from 0.4 to 2.8 percent.Based on Debye's model for atomic specific heat of simple solids, an equation has been developed, by means of which we may...

An adiabatic calorimeter has been developed for measuring specific heat of solids at low temperatures. Bismuth of high purity and OFHC are used as measuring samples ia temperature range, 13.81-273.15K. A comparison is made between the values of specific heat obtained by us and the data collected by TPRC of Purdue University ia U.S.A., the deviations obtained being from 0.4 to 2.8 percent.Based on Debye's model for atomic specific heat of simple solids, an equation has been developed, by means of which we may find out the optimum temperature increment △T* in specific heat measurement at low temperatures.Error analysis and data on some solid samples are given in this paper, too.

This paper give the measured results of specific heat from LH_2 to ambient temperature of five materials by means of the fitting formulas, including metal and nonmetal structural materials and foam insulating materials. On the basis of a large mumber of experiments. the method of the exact measuring and fitting of specific heat of the solid was discussed and the following ideas was suggested: (1) Starting from Debye's model of atomic specific heat of simple solid, the concept of optimum temperature rise in...

This paper give the measured results of specific heat from LH_2 to ambient temperature of five materials by means of the fitting formulas, including metal and nonmetal structural materials and foam insulating materials. On the basis of a large mumber of experiments. the method of the exact measuring and fitting of specific heat of the solid was discussed and the following ideas was suggested: (1) Starting from Debye's model of atomic specific heat of simple solid, the concept of optimum temperature rise in the measuring of specific heat at low temperature and its equation was suggested: (2) The principles of selecting the sorts of thermometers and the assembling structure of samples on the basis of the density and thermal conductivity of the mate- rials was suggested, (3) Seeing that there are only empirical formulas of specific heat at low temperature, which are suitable for a quite narrow temperature, range. the idea of seeking the fitting formulas with in large range (20-280 K) by orthogonal functions in the least squares norm was suggested and the satisfied results was gotten.

Ten apparatus were developed for measuring properties of materials at low temperature, including specific heat, thermal conductivity, expansion and elastic module etc. On the basis of a large number of experiments, the following theoretical problems have been solved: (1) Starting from Debye's model of atomic specific heat of simple solid, the concept of optimum temperature increment △T in Specific heat measurement at low temperature and its equation was suggested; (2) Starting from Harding's equation which is...

Ten apparatus were developed for measuring properties of materials at low temperature, including specific heat, thermal conductivity, expansion and elastic module etc. On the basis of a large number of experiments, the following theoretical problems have been solved: (1) Starting from Debye's model of atomic specific heat of simple solid, the concept of optimum temperature increment △T in Specific heat measurement at low temperature and its equation was suggested; (2) Starting from Harding's equation which is based on isotropic foamed materials, a new closed cell proportion equation that is suitable for nonisotropic foamed materials was deduced; (3) The new method of assembling sample and reasonable experiment program was suggested, solved the problem that measuring thermal conductivity of foamed materials exactly is difficult at low temperature by the flat-plate thermal conductivity apparatus; (4) The idea of seeking the fitting formulas in large range (20-280K) by orthogonal functions in the least squares norm was suggested and the satisfied results were gotten.