Vol. 48, No. 9 (1999)
1999-05-05
GENERAL
1999, 48 (9): 1565-1570.
doi: 10.7498/aps.48.1565
Abstract +
The classical -deformed WN algebra and the corresponding -deformed Miura transformation are constructed.The algebra degenerate the classical WN algebra when →0.
1999, 48 (9): 1571-1580.
doi: 10.7498/aps.48.1571
Abstract +
The quantum theory of -deformed WN algebra is constructed.The corresponding quantum -deformed Miura transformation is given.We also study the algebra of the screening currents of quantum -deformed WN algebra.
1999, 48 (9): 1581-1586.
doi: 10.7498/aps.48.1581
Abstract +
We present a generalized integral transformation with changeable coefficient,and show that the case of electromagnetic field interaction could be settled by nonlinear-suppersymmetry method.As an example,Landau systems are analyzed.
1999, 48 (9): 1587-1592.
doi: 10.7498/aps.48.1587
Abstract +
The universal formula for calculating the matrix element of radial operator of relativistic hydrogen atom is established.
1999, 48 (9): 1593-1600.
doi: 10.7498/aps.48.1593
Abstract +
The coupled wave functions for equivalent electrons are constructed by (U,D)L-LSQ-R scheme,where U(D) is the total orbital angular momentum of all spin up (down) electrons,Q is the quasi-spin,R is the interchange operator between spin and quasi-spin.It is
1999, 48 (9): 1601-1604.
doi: 10.7498/aps.48.1601
Abstract +
From the generalized linear quantum transformation theory,we obtain the normal product form of evolution operator and the wave function for a time-dependent oscillator.
1999, 48 (9): 1605-1610.
doi: 10.7498/aps.48.1605
Abstract +
This paper proposes the occasional coupling synchronization scheme of the active-passive decomposition (active-occasional coupling).This scheme consists of synchronization and autonomous phases.In the former,the synchronization scheme is used to synchroni
1999, 48 (9): 1611-1617.
doi: 10.7498/aps.48.1611
Abstract +
The nonlinear dynamics of a two-dimensional map system on a plane is studied.We found that the attractor of the system changed from stable focus，stable invariant circle(limit circle) to the chaotic attractor contracted into low-dimensional manifold with o
1999, 48 (9): 1618-1627.
doi: 10.7498/aps.48.1618
Abstract +
This paper presents a nonlinear state feedback approach to the control and synchronization of chaotic nonlinear dynamic systems based on a unified frame for both the control and the synchronization.Assuming the boundedness of chaotic attractors and limit
ATOMIC AND MOLECULAR PHYSICS
1999, 48 (9): 1628-1634.
doi: 10.7498/aps.48.1628
Abstract +
Recent measurements on CO2-laser-assisted electron-atom collisions have shown large inconsistencies with the Kroll-Watson formula.We use Born approximation theory to carry out a detailed study of the problem.The calculations have shown that the
CLASSICAL AREA OF PHENOMENOLOGY
1999, 48 (9): 1635-1643.
doi: 10.7498/aps.48.1635
Abstract +
The method for the simulational generation of Gaussian correlation random surfaces is proposed,and the computational simulation of the speckle field produced by this kind of surfaces on the Fraunhofer plane is performed.10000 speckle fieldsamples at each
1999, 48 (9): 1644-1649.
doi: 10.7498/aps.48.1644
Abstract +
The superposition of two excited coherent states of identical intensity but different phases yields a state that can exhibit varied non-classical characteristics.Under suitable conditions,as the phase difference changes,the mean photon number of the super
1999, 48 (9): 1650-1658.
doi: 10.7498/aps.48.1650
Abstract +
The cavity field spectra for a pair of coupled two-level atoms with single mode of the radiation in an ideal cavity via two-photon resonant transition processes are investigated.The results for the initial fields in pure number state,coherent state or squ
1999, 48 (9): 1659-1666.
doi: 10.7498/aps.48.1659
Abstract +
Using transfer matrix method with rate equations and couple wave theory,the static and dynamic analysis of 3PS-DFB and QPS-DFB diodes are presented.With vector processing rather than NR algorithm,carrier density and photon density distribution of the two
1999, 48 (9): 1667-1675.
doi: 10.7498/aps.48.1667
Abstract +
We have studied the polarization beats spectroscopy with phase-conjugation geometry in a cascade three-level system.It was found that the accuracy for the energy-level difference measurement is determined by the homogeneous linewidths of the optical trans
1999, 48 (9): 1676-1681.
doi: 10.7498/aps.48.1676
Abstract +
The Teflon AF/NLO polymer electret double-layer system was presented in order to improve the stability of preferential dipole orientation in the NLO polymer electret layer. The polarization stability of the samples poled by constant voltage corona chargin
1999, 48 (9): 1682-1690.
doi: 10.7498/aps.48.1682
Abstract +
Using transient two-dimensional transport model, theoretical analysis is developed for optically addressed spatial light modulators with semi-insulating multiple-quantum-well structure operating in longitudinal field geometry. A partial differential equat
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES
1999, 48 (9): 1691-1700.
doi: 10.7498/aps.48.1691
Abstract +
The computational method of temperature distribution of free-burning arc is investigated by using a numerical simulation model, which is based on the local thermodynamic equilibrium. A spectrum temperature diagnostic system of plasma torch based on charge
1999, 48 (9): 1701-1708.
doi: 10.7498/aps.48.1701
Abstract +
The ions(N2+,N+) and fast nitrogen molecular (N2f) transport process in cathode sheath of nitrogen glow discharge plasma is studied by using Monte Carlo simulation. Spatial variation of energy distribution and a
1999, 48 (9): 1709-1717.
doi: 10.7498/aps.48.1709
Abstract +
The mechanism of fast wave minority ion heating is discussed in some detail. The ray tracing algorithm is used to simulate fast wave heating for the plasma of two kinds of ions, and the calculation results of different ratios of two ions' density is obtai
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES
1999, 48 (9): 1718-1722.
doi: 10.7498/aps.48.1718
Abstract +
This paper reports the molecular beam epitaxy growth of the GaAs single crystal film on the perovskite oxide SrTiO3(001) substrate. The photo modulated reflectance spectroscopy and the photoluminescence measurement show that the energy band gap
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES
1999, 48 (9): 1723-1732.
doi: 10.7498/aps.48.1723
Abstract +
We have investigated transport properties of electrons in magnetic quantum structures under an applied constant electric field.The transmission coefficient and current density have been calculated for electron tunneling through structures consisting of id
1999, 48 (9): 1733-1744.
doi: 10.7498/aps.48.1733
Abstract +
In this work the resonant splitting effect in semiconductor superlattices and magnetic-barrier superlattices is investigated systematically by using transfer-matrix method.Universality of characteristics of resonant splitting is revealed for electron tunn
1999, 48 (9): 1745-1750.
doi: 10.7498/aps.48.1745
Abstract +
Morphology of self-assembled GeSi quantum dot grown on Si(113) by Si molecular beam epitaxy has been studied by transmission electron microscopy and atomic force microscopy.Photoluminescence from the as-grown sample and annealed sample was studied.The res
1999, 48 (9): 1751-1759.
doi: 10.7498/aps.48.1751
Abstract +
The magnetic properties and narrow domain are investigated.The substitution of silicon for iron leads to the reduction of the lattice parameters,and the significant increase of the Curie temperature from 413K to 526K.The mean field analysis show that the
1999, 48 (9): 1760-1766.
doi: 10.7498/aps.48.1760
Abstract +
Measuring system and method as well as data processing of the laser intensity modulation method(LIMM) have been set up.The polarization distribution and the process of depolarization for VDF/TrFE ferroelectric copolymers are investigated by LIMM.The pyroe
1999, 48 (9): 1767-1772.
doi: 10.7498/aps.48.1767
Abstract +
The dynamical characteristics of electroluminescence in zinc sulfide thin film devices doped with erbium prepared by thermal evaporation with two boats are reported.The transient process of the thin film luminescence is described by a compound function in
1999, 48 (9): 1773-1780.
doi: 10.7498/aps.48.1773
Abstract +
By sol-gel process and appropriate heat treatment,Tb3+-doped light-emitting films were prepared on the silicon bases.The structural changes of the xerogels and the fluorescence properties of the Tb3+ ions doped were studied by photol
