A soft-hard two-component approach to the description of high energy hadronic interactions is proposed. It shows the important role of parton hard scattering in explanation of the chief characteristics of high energy hadronic interactions.

Superradiance of two level atoms from a lattice of arbitrary dimension is discussed which is resonant sharply with some definite momenta of photons. Both the photon superradiant and the photon trapping (squeezing) from the lattice are expected theoretically.

Photoconductivity spectra temperature dependence combining with transmission measurements have been formed on hydrogenated amorphous silicon. After exposure by AM1 light a reversible increase of 6% of the Urbach parameter E₀ (T,X) has been observed. This is a direct evidence for the fact that photo-induced changes in a-Si:H create not only metastable defects but also affect the topological disorder.

Discrete high energy y-rays in~5-10MeV region were produced utilizing a~ 10⁵ / s Am-Be neutron source through the radiation capture process. The device can be conveniently used for energy calibration and relative efficiency determination for γ-detectors.

A suitable supersymmetry Lagrangian density is found to describe the 1+1 dimensional soliton-fermion coupled system. The general exact solutions of the field equations of the system are found.

To elucidate the promotion action of cobalt on Mo sulfide catalysts, UV-Photoelectron Spectroscopy(UPS), X-ray Photoelectron Spectroscopy (XPS) and Lou Energy Diffraction(LEED) have been applied to study the submonolayer deposited process of metal Co on the highly edged surfaces of MoS₂ crystal. The results show that the electronic effect near E_F rather than the chemical changes on the surfaces, might be primary influence.

We extend previous theoretical work to predict the derivatives with respect to the <100> uniaxial stress of the substitutional deep point defect energy levels in Gap and GaAs which, for a defect at a specific site producing a level of particular symmetry, can be evaluated as a function of their energy levels in the band gap.

Relaxation behavior of the Curie temperature (TC) of two amorphous alloys Fe₄₀Ni₄₀P₁₄B₆ and ( Fe_0.1Co_0.55Ni_0.35)₇₈Si₈B₁₄ was investigated under high pressure up to 20kbar. Experimental results show that T_c relaxation process was restrained by high pressure. On the other hand, alternative treating sample at different pressures may enhance this process. Based on the expansion of local pressed region in an amorphous structure, a mechanism of relaxation under high pressure was suggested for explaining the above phenomena.

The electron cyclotron resonance heating (ECRH) processes to produce the energetic trapped electrons are proposed. Injecting the RF waves on a certain magnetic surface with proper frequency and wave vector. are suggested. By the relay of different high electron cyclotron harmonic resonances a few percent of electrons are heated up to a desired energy.

A new method to detect multidomain phase transition by measuring the depolarization of transmitted light is reported. As an example, the ferroelastic phase transition in LiKSO₄ was investigated in more detail. It was found that the multidomain phase F₃ was ferroelastic. More accurate transition temperatures between phases F₂ and F₃ in cooling and heating cycle were determined to be -85°C and -79°C respectively.

Using pentamethylidyne dye as a saturable absorber, we have obtained pulses close to Fourier-transform limit from colliding pulse mode-locked Nd:YAG and Nd:phosphate glass lasers with minim pulse durations of 8 psec and 3.7 psec, respectively.

Fokker-Planck equation (FPE) has been studied by using the geometric theory for partial differential equations. We give the differential ideal generated by three differential forms, which is geometrically equivalent to the original FPE. Then we obtain a class of conversation laws and conserved quantities for FPE from this differential ideal. The applications of the conservation laws and conserved quantities are discussed.