The Institute of Physics ( IOP ) по журналам "Acta Physica Sinica (Overseas Edition)"
Отображаемые элементы 120 из 756

(19970801)A (2 + 1)dimensional multicomponent derivative nonlinear Schrödinger (DNLS) equation is obtained from the symmetry constraint of the modified KadomtsevPetviashvili equation. The model is proved to be integrable under ...

(19971001)The multiphoton ionization spectra of dimethylamine are given in the 445470 nm region. A timeofflight mass spectrometer was used, and experiment was done under collision free condition. It is found that (2 + 2) ...

(19930801)57Fe Mössbauer spectra have been obtained at room temperature for (NdDy)TiFe11, and at 11K and room temperature for the corresponding nitrides (NdDy)TiFe11Ny. The magnetic behaviors of Fe atoms at different sites have been ...

(19921101)Ab initio calculations of opticalphonon deformation potentials (ODP's), i. e., d0, d30, d10 (val) and d10 (con) for sixteen semiconductors were carried out systematically. The calculations are based on the LMTOASA ...

(19931001)An energy dependence of the axial minimum channeling yield in GexSi1x/Si(100) Strainedlayer superlattice is observed in the energy range of impinging He+ ions from 1.2 to 3.0 MeV. For [100] axial channeling, the measurements ...

(19990601)Accurate reactive scattering calculations of reactive probabilities and integral cross sections for the system D+H2 DH+H were carried out by using the quantum mechanical timedependent wave packet methods. In order to ...

(19970901)We study the onedimensional solution of the shape equation of bilayer membranes within the Helfrich spontaneous curvature model. The general integral of the cylindrical shape equation is obtained which gives a complete ...

(19950801)A continuous compound fourwave mixing mechanism for selfpumped phase conjugation in photorefractive crystals is presented. The coupledbeam equations of this mechanism are solved numerically when depletion of the forward ...

(19980201)The acoustic absorption characteristics of foamed aluminum and the effect of its structural parameters on the characteristics have been investigated. The results indicate that the acoustic absorption behavior of foamed ...

(19990101)The acousticenergy loss was measured when the sound wave propagated through a layer of water fog. By the application of the sound attenuation theory in granular media and by means of the acoustic inverse (optimization) ...

(19930401)A highTc superconducting array microbolometer has been fabricated by using a YBCO film. Optical measurements gave moderate performance as individual detector, but significant improvement appears possible.

(19970801)A matrix formalism is introduced here for the analytical calculation of the thermoelastic response of onedimensional optically inhomogeneous layered structures exposed to the periodic laser heating. The multilayer structure ...

(19990801)An exact direct perturbation theory of nonlinear Schrödinger equation with corrections is developed under the condition that the initial value of the perturbed solution is equal to the value of an exact multisoliton solution ...

(19981101)The electronic structures of the perovskite oxides, LaMnO3 and CaMnO3, with various magnetic structures are studied using the firstprinciples discrete variational (DV) cluster method based on ab initio localspindensity ...

(19940501)Pure C60 single crystals were grown by a sublimationcondensation method in an evacuated closed quartz tube situated in a doubletemperaturegradient furnace. Large C60 single crystals, up to a size of 0.6 mm × 1.0 mm × ...

(19920901)A full quantum treatment about the process of parametric downconversion with frequency degenerate but polarization nondegenerate in an optical parametric oscillator (OPO) cavity is presented. Using the linearized Langevin ...

(19971101)Starting with the diagonal spacetime metric tensor, the Einstein gravitational field equation is solved, and a set of exact (3 + 1) dimensional cylindrically symmetric wave solutions with two arbitrary functions are found. ...

(19980501)Based on a surface reaction mechanism for diamond deposition from the gas phase, a kinetic model is developed to describe diamond nucleation sites and the initial stage of diamond growth in chemical vapor deposition. The ...

(19980301)The Al L nearedge fine structures of aluminum and its compounds with nitrogen and oxygen are studied using electron energy loss microspectroscopy in a transmission electron microscope. These edges are normalized to the ...

(19971101)By introducing a series of mathematical symbols and phase quantization condition, we give a new approach to the phase operator, which is defined directly in the conventionallyused infinitedimensional state spaces. ...
Отображаемые элементы 120 из 756