The Institute of Physics ( IOP ) по журналам "Acta Physica Sinica (Overseas Edition)"
Отображаемые элементы 1-20 из 756
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(1997-08-01)A (2 + 1)-dimensional multi-component derivative nonlinear Schrödinger (DNLS) equation is obtained from the symmetry constraint of the modified Kadomtsev-Petviashvili equation. The model is proved to be integrable under ...
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(1997-10-01)The multiphoton ionization spectra of dimethylamine are given in the 445-470 nm region. A time-of-flight mass spectrometer was used, and experiment was done under collision free condition. It is found that (2 + 2) ...
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(1993-08-01)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 ...
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(1992-11-01)Ab initio calculations of optical-phonon 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 LMTO-ASA ...
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(1993-10-01)An energy dependence of the axial minimum channeling yield in GexSi1-x/Si(100) Strained-layer superlattice is observed in the energy range of impinging He+ ions from 1.2 to 3.0 MeV. For [100] axial channeling, the measurements ...
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(1999-06-01)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 time-dependent wave packet methods. In order to ...
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(1997-09-01)We study the one-dimensional 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 ...
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(1995-08-01)A continuous compound four-wave mixing mechanism for self-pumped phase conjugation in photorefractive crystals is presented. The coupled-beam equations of this mechanism are solved numerically when depletion of the forward ...
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(1998-02-01)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 ...
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(1999-01-01)The acoustic-energy 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) ...
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(1993-04-01)A high-Tc superconducting array microbolometer has been fabricated by using a YBCO film. Optical measurements gave moderate performance as individual detector, but significant improvement appears possible.
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(1997-08-01)A matrix formalism is introduced here for the analytical calculation of the thermo-elastic response of one-dimensional optically inhomogeneous layered structures exposed to the periodic laser heating. The multilayer structure ...
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(1999-08-01)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 ...
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(1998-11-01)The electronic structures of the perovskite oxides, LaMnO3 and CaMnO3, with various magnetic structures are studied using the first-principles discrete variational (DV) cluster method based on ab initio local-spin-density ...
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(1994-05-01)Pure C60 single crystals were grown by a sublimation-condensation method in an evacuated closed quartz tube situated in a double-temperature-gradient furnace. Large C60 single crystals, up to a size of 0.6 mm × 1.0 mm × ...
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(1992-09-01)A full quantum treatment about the process of parametric down-conversion with frequency degenerate but polarization non-degenerate in an optical parametric oscillator (OPO) cavity is presented. Using the linearized Langevin ...
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(1997-11-01)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. ...
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(1998-05-01)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 ...
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(1998-03-01)The Al L near-edge 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 ...
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(1997-11-01)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 conventionally-used infinite-dimensional state spaces. ...
Отображаемые элементы 1-20 из 756