We present here the first measurement of photoacoustic spectra (PAS) of a-Si:H/a-SiN_x:H multilayers. By converting the PAS signal to absorption coefficient, the blue shift and the broadening of Urbach edge are explained as the results of quantum size effect in superlattice structure.

The crystal field parameters B°₂, B^-2₂, B°₄, and B⁴₄ are determined Empirically on the basis of one sublattice model. These parameters can account for the major magnetic anisotropy of all of R₂Fe₁₄B (R: rare-earth) including the easy cone of Nd₂Fe₁₄B and Ho₂Fe₁₄B at 4.2K.

We present the result of an experimental search for a heavy neutrino admixture in the electron capture process. The 95% confidence level upper limits from 0.02 to 0.04 are set for the mixing strength of heavy neutrinos in the neutrino mass range of 30keV to 90keV.

An analysis of the nonlinear ac dynamics of charge density wave condensate based on the Tua-Zawadowski model is presented. The obtained results are consistent with the Tessema-Ong experiments.

The radiation pressure produced by two-laser fields on a two-level atom is obtained. These results show that the radiation pressure produced by two-laser fields with appropriate detunings with atom is much greater than that produced by a single-laser field. This great radiation pressure is possible to be applied to isotope separation by laser deflection of an atomic beam.

The mechanism of optogalvanic effect (OGE) in CO₂-N₂ discharge was experimentally investigated. The results show that laser irradiation causes interchange, of energies between molecules CO₂ and N₂ in electronic excited states, and OGE is induced by step-ionization.

A perturbed s-G equation has been solved by numerical experiment. The results indicate that during the resonant time the soliton has a very complicated intrinsic motion and a complexity of the entire motion, and the soliton also has a Newtonian acceleration under constant applied field.

A model Hamiltonian resulting from an extended Schrieffer-wolff transformation on the Anderson lattice Hamiltonian with f-electron hopping has been used to calculate the anomalous temperature dependence of the electrical resistivity in the Kondo lattice compounds (e.g., CeAl₃ and CeCu₆). The Green's functions for the conduction electron have been calculated by the equation of motion approach. The numerical calculated results of the electrical resistivity of CeCu₆ is consistent with the experimental data.

The polarization spectroscopy of Na D₁ line with linearly polarized pumping light is studied theoretically using velocity-selective optical pumping model. The experimental results are in good agreement with the theoretical analysis.

The “scaling in fragmentation region” given by UA5 Collaboration in pp Collider (SPS) experiments is investigated. It is pointed out that these phenomena support the hypothesis of limiting fragmentation. The calculated results using the stochastically decaying fire ball model fit the experimental data remarkable.

The wavelenghts have been calculated for the ( 2p2p )³ P-( 1s2p )³P transition for helium-like ions ranging from z = 2 to 10. The energy values of both( 2p2p )³P and ( 1s2p )³P statas include relativistic correction and mass-polarisation. Radiative corrections are added to the energy values of the ( 1s2p )³P. Our results agree with experiments.

The interference order structure in the angular spectrum is demonstrated for the sea acoustical waveguide. The one-to-one correspondence between the modes and the orders of interference is proved.

It is verified that the instable massive particles in the self-consistent cosmological model must be primitive black holes.