bluuebunny/crossref_metadata_2025 huggingface dataset:
THE APPLICATION OF SECOND ORDER DIFFRACTION OF A MONOCHROMETER IN LABORATORY EXAFS MEASUREMENT
Authors: WANG WEN-CAI  , YANG CHUN-LAI  , CHEN YU  ,   北京大学物理系,北京,100871
Published: December 2020

Some aspects on the application of second order diffraction of a monochrometer in laboratory EXAFS measurement are studied. Significant distortions in measured X-ray absorption fine structure occur when there are impurities' emission lines on the continuum spectra m the investigated energy range. A method for correcting that distortion is proposed. As the EXAFS amplitude decreases, which is caused by the application of second order diffraction of a monochrometer, how to obtain correct structural parameters is also discussed.
HREELS INVESTIGATION OF CO AND POTASSIUM CO-ADSORPTION ON Fe(110)
Authors: ZHU LI  , BAO SHI-NING  , XU YA-BO  , WANG GENG  ,   (1)浙江大学物理系,杭州,310027; (2)中国科学院表面物理开放研究实验室,北京,100080
Published: December 2020

Co-adsorption of CO and potassium on Fe(110) is investigated by HREELS. We find three CO adsorption states, with different C-O stretching frequencies. When θk=0.03, the three loss peaks are ascribed to three kinds of interactions i.e., short-range, medium-range and long-range interaction. When θk = 0.06, the long-range interaction adsorption state disappears, but the short-range state dominats. All C-O stretching frequencies shift to higher wavenum-ber with the increasing of CO exposure. CO-Fe loss peak disappears with the increasing of potassium atoms on the surface.
THERMODYNAMICS OF ONE-DIMENSIONAL FERMI GAS IN THE INFINITE REPULSIVE COUPLING LIMIT
Authors: HU ZHAN-NING  , ZHOU YU-KUI  ,   西北大学现代物理研究所,西安,710069
Published: December 2020

The thermodynamic properties for a gas of one-dimensional fermi particles interacting via a repulsive delta-function potential have been studied under the limit of infinite repulsive coupling using the theory of grand canonical ensemble. All the thermodynamic functions have been found explicitly and the velocity of sound is derived as a function of the fugacity. In particular, the entropy is not zero at the absolute zero temperature for this model. Finally, some results are given for the arbitrary spin gas.
MULTI-PHOTON SQUEEZING EFFECT FOR THE MIXED ABSORPTIVE-DISPERSIVE DRIVEN OPTICAL SYSTEM IN GOOD CAVITY CASE
Authors: ZHANG LIN  , LIN REN-MING  ,   福建师范大学物理系,福州,350007
Published: December 2020

In this paper, the multi-photon field squeezing effects for the mixed absorptive-dispersive driven optical system in good cavity case is discussed. Under certain condition, for the single-photon case the squeezing effect of A1, one of the quadrature component of field, in the mixed systems is better than that in the pure absorptive systems. And for the two-photon case, the squeezing effect of A2, another quadrature component of field, may appear.
A THEORETICAL STUDY OF GENERATION OF A STRONG SQUEEZED CAVITY FIELD BY USE OF ONE PHOTON MICROMASER
Authors: LI FU-LI  ,   兰州大学现代物理系,兰州,730001,西安交通大学物理系,西安,710049
Published: December 2020

In this paper interaction of two-level atoms initially occupied the upper most level with a single mode of cavity field initially in a coherent state is investigated. Let the atoms interact in sequence with the field in equal time intervals and we find that the field can be kept in squeezed states and squeezed continuously in this process if initial intensity of the field is strong. The atoms interacting with the squeezed light are also discussed.
NON-PROPAGATING SURFACE-WAVE SOLITONS IN AN ANNULAR RESONATOR
Authors: YANG XIN-E  , HAN WEN-GE  ,   天津大学物理系,天津,300072
Published: December 2020

In an annular resonator parametrically driven in the vertical direction, the irrotational movement of an incompressible fluid has been studied by the multiple-scales approach. The calculations have shown that under the condition that the radius of the annular resonator is much larger than the width the displacement of the movement of fluid surface satisfies the cubic Schrodinger equation. A non-propagating surface-wave solitons solution is obtained that describes the standing solitary wave observed by Wu, Keolian and Rudnick (1984).
THE PROPAGATION PROPERTY OF ION-ACOUSTIC SOLITON IN AN INHOMOGENEOUS PLASMA
Authors: ZHU JIA-ZHEN  , WANG GENG-GUO  ,   西安电子科技大学物理系,西安,710071
Published: December 2020

The propagation property of ion-acoustic soliton in a weakly inhomogeneous plasma caused by ionization is studied. Finite ion temperature and ion-neutral collisions are considered the self consistent, stationary distribution N(x), V(x) and the corresponding soliton solution are obtained, numerical results of soliton amplitude, speed and width dependent on position are given, which are reasonable and consistent with experiments.
A NEW METHOD APPLIED TO SOME IONIC CONDUCTORS FOR MEASURING PARAMETERS OF IONIC CONDUCTION
Authors: XU ZHENG-YI  , LING YA-WEN  , YANG HUA-GUANG  ,   (1)中国科学院物理研究所,北京,100080; (2)中国科学院物理研究所,北京,100080,西安电子科技大学物理实验室
Published: December 2020

In this paper, a new method applied to some ionic conductors for measuring fundamental parameters of ionic conduction was developed based on the phenomena of light diffraction produced by a laser beam through these ionic conductors under a low frequency AC field. The ionic conduction parameters of aaaa-LiIO3 single crystal was measured by this method. The results are as follows. The activation energy of mobility Eμ=0.36eV. The formation energy of Frenkel defect EM =0.59 eV. At 300K, both the number densities of positive and negative carriers are 1.6×1017cm-3; their relative concentrations are 1.07×10-5; the effective mobility μeff+=3.9×10-8cm2·s-1·V-1 as the DC field applied to the crystal is antiparallel to its spontaneous polarization (we denote the voltage as V+) the effective mobility μeff- = 3.4 ×10-9cm2·s-1·V-1 as they are parallel (we denote the voltage as V-). Under the action of an AC field, in the half period that is corresponding to V+, it at least need that the ion hops 7 steps to form a space grating, and in another half period ion at least hops 32 steps to cause an oscillating component in the diffraction light intensity.
STUDIES AND ANALYSIS FOR MICROSTRUCTURES OF MICRO-CRYSTALLIZATION PROCESS OF AMORPHOUS SILICON FILMS
Authors: HE YU-LIANG  , ZHOU HENG-NAN  , LIU XIANG-NA  , CHENG GUANG-XU  , YU SHI-DONG  ,   (1)南京大学固体微结构物理实验室,南京,210008; (2)南京大学物理系,南京,210008
Published: December 2020

We have studied the fine procedure and characters of the microstructures for the a-Si:H and a-Si films, which have been changed from amorphous phase to microcrystalline phase, by means of Rigaku 3015 type X-ray diffraction spectroscope and high resolution electronic microscopy (HREM). This research provides some intuitive information for the transformation process, in which amorphous silicon filims change over from amorphous phase to micro-crystalline phase, and further deepens the understanding for the microstructures of amorphous silicon films.
FLUCTUATION AND DIMENSIONALITY OF SUPERCONDUCTIVITY IN HIGH Tc THIN FILMS
Authors: WEN HAI-HU  , LI HONG-CHENG  , QI ZHEN-ZHONG  , CAO XIAO-WEN  ,   (1)中国科学院等离子体物理研究所,合肥,230031; (2)中国科学院固体物理研究所,合肥,230031; (3)中国科学院物理研究所,北京,100080
Published: December 2020

Strong signal of fluctuation superconductivity has been found in RBa2Cu3O7-δ(R = Y, Gd) superconducting thin films near Tc through careful investigation on resistance transitions. Detailed analyses show that, for both polycrystalline and epitaxial YBa2Cu3O7-δ thin films, it tends to be of 2D characteristic when T》Tc, but a crossover from 2D to 3D will occur when T approaches Tc, which is consistent with the prediction of Lawrence-Doniach theory. The 3D-2D crossover can also take place when a rather weak field (1.5G) is applied parallel to Cu-O planes, but it is not the case when H is perpendicular to Cu-O planes, this indicates that there is a weak coupling between Cu-O planes in YBa2Cu3O7-δ. The same study on a GdBa2Cu3O7-δ epitaxial thin films shows that the 2D feature also appeares when T》Tc, but no evidence of 3D has been found when T approaches Tc, this we think is related to the self-moment of Gd ions.
INFLUENCE OF HIGH Sn CONCENTRATIONS ON THE STRUCTURE AND PROPERTIES OF Y-Ba-Cu-O COMPOUNDS
Authors: ZHANG DAO-YUAN  , WANG GEN-MIAO  , WANG YU-XIA  , WANG ZHENG  , ZHANG YU-HENG  ,   中国科学技术大学物理系,合肥,230026
Published: December 2020

Mossbauer measurements of YBa2Cu3-xSnxO7-y compounds with high Sn concentrations have revealed that the Sn dopants all exist as Sn4+, with their majority occupying Ba, Y, Cu(2) sites, and only a small part at Cu(l) sites. The amount of Sn at each site varies with Sn content (x). As for superconductivity, the sample systems are all with Tc above 77 K, this indicates that the substitutions for the metal ions on Cu(2) and Y sites have small effect on Tc, which strongly supports the concept that Cu-O plane does not predominate the superconductivity.
RESEARCHES ON THE TEMPERATURE DEPENDENCE OF THE WIDTH OF DISTRIBUTION OF RELAXATION TIMES OF INDUCED MAGNETIC ANISOTROPY IN COBALT BASED METAL GLASSES
Authors: HE KAI-YUAN  , LU XING  , WANG QUN  ,   东北工学院材料科学与工程系,沈阳,110006
Published: December 2020

From the analysing of the relaxation curves of magnetic annealing induced anisotropy of three cobalt based metal glasses, a linear relationship between the width of lognormal distribution of relaxation times (β) and the reciprocal temperature (1/T) has been established. This result implies that, in the process of relaxation, both Inτ0 and activation energy E obey the Gaussian distribution. The width of distribution for Inτ0 and E have been estimated.
DV-X2 CALCULATIONS FOR THE CRYSTAL-FIELD SPECTRA OF RUBY
Authors: YANG JIN-LONG  , XIA SHANG-DA  , WANG KE-LIN  ,   (1)中国科学技术大学基础物理中心,合肥,230026; (2)中国科学技术大学物理系,合肥,230026; (3)中国科学院国际材料物理中心,沈阳,110015
Published: December 2020

Using a DV-X2 method of calculating the crystal-field spectra of transition-metal complexes in [1] , we calculated all the crystal-field transition energies of ruby non-empirecally. The results obtained are in good agreement with the experimental data.
HIGH-RESOLUTION NMR SPECTROSCOPIC STUDY ON THE CENTRAL TRANSITION OF SPIN-3/2 QUADRUPOLAR NUCLEI IN POWDERS
Authors: LI GENG-YING  , WU XUE-WEN  ,   华东师范大学分析测试中心,上海,200062
Published: December 2020

We make use of the selectivity of pulse excitation in the central transition of spin-3/2 quadrupolar nuclei, and in powder sample, employ a 90°pulse to rotate the nuclear spin magnetization of certain spatial orientation of the electric-field-gradient tensor to the XY plane of the rotating frame for detection. Thus, high resolution spectrum similar to that obtained in a single crystal is acquired. The result is analyzed by density operator formula theoretically and confirmed by 23Na spectra of NaNO2 and Na2SO4 powders experimentally.
INSTABILITY ANALYSIS OF LASER WITH AN INJECTED SIGNAL
Authors: YANG GUO-JIAN  , HU GANG  ,   (1)北京师范大学低能核物理研究所,北京,100875; (2)北京师范大学物理系,北京,100875
Published: December 2020

Based on the instability criterion of semi-classical Maxwell-Bloch equations of single-mode laser with an injected signal, we investigated the instability of this system In. particular, we examined the global structure of Hopf instabiliy domain in the entire parameter space and derived the boundary of this domain analytically. We also found a full hysteresis loop between the bistable states of the output laser intensity in the active cavity case and discussed the condition of occurance of such phenomenon.
THE EFFECT OF ELECTRON DIFFRACTION CONDITIONS ON RHEED INTENSITY OSCILLATIONS DURING Si(111) MBE
Authors: CHEN KE-MING  , ZHOU TIE-CHENG  , FAN YONG-LIANG  , SHENG CHI  , YU MING-REN  ,   复旦大学表面物理实验室,上海,200433
Published: December 2020

The Reflection High Energy Electron Diffraction (RHEED) intensity oscillations under different angles of incidence and azimuths during Si(111) molecular beam epitaxy have been studied. The phase of intensity oscillation and initial transient response change dramatically with the angles of incidencl if the observation is carried out along [112] azimuthal direction, but vary little when observed along [011] azimuth. From the measurement results of RHEED specular beam rocking curve, we believe that, the characteristics of RHEED intensity oscillation as a function of electron diffraction condition, indicate the existence of two different seattering processes: coherently elastic diffraction beam oscillation and inelastic or diffuse scattering beam oscillation. This can be explained only by the electron multiple scattering mechanism. The origin of initial transient is also discussed.
THE GROWTH OF GaSb/AlSb/GaAs STRAINED LAYER HETEROSTRUCTURES BY MBE
Authors: ZONG XIANG-FU  , QIU SHAO-XIONG  , YANG HENG-QING  , HUANG CHANG-HE  , CHEN JUN-YI  , HU GANG  , WU ZHONG-CHI  ,   复旦大学材料科学系,上海,200433
Published: December 2020

By means of monitoring with the reflection high energy electron diffraction (RHEED) -and its intensity oscillations, the GaSb/AlSb/GaAs strained layer heterostructures have been suc-cessfully grown on semi-insulating (100) GaAs substrates by molecular beam epitaxy (MBE) The RHEED patterns show that the GaSb surface grown under Sb-stabilized condition has C (2×6) structure and the AlSb surface has (1×3) Sb structure. We observed and recorded the RHEED intensity oscillations during the growth of GaSb and AlSb. Using the information provided by the RHEED intensity oscillations, we successfully prepared a GaSb/AlSb super-lattice with 10 periods. The transmission electron micrograph shows the interfaces in the su-perlattice are sharp and planar. If the AlSb buffer layer is thick enough under a proper growth condition, a high-quality GaSb epitaxy will be grown on SI GaAs substrate. The full width at half maximun (FWHM) of the peak corresponding to the GaSb epilayer in double-crystal X-ray diffraction rocking curve is less than 300 seconds. Undoped GaSb is p-type with carrier concentration of 2.12×1016 cm-3 and mobility of 664cm2/V·s at room temperature.
BORON DIFFUSION IN B-DOPED a-SiC:H/UNDOPED a-Si:H HETEROJUNCTIONS
Authors: ZHANG FANG-QING  , HE DE-YAN  , SONG ZHI-ZHONG  , KE NING  , CHEN GUANG-HUA  ,   兰州大学物理系,兰州,730001
Published: December 2020

The B depth profiles in B-doped a-SiC: H/undoped a-Si: H heteroiunctions have been measured by utilizing the nuclear reaction 11B(p, α)8Be. From the change of B depth profiles, we estimate the coefficients of B diffusion in a-Si:H during preparation and post-deposition annealing. The behaviors of electrically activated B diffusion have also been investigated by conductivity measurements. Based on the recent studies of thermal equilibrium defects in a-Si: H, a simple discussion on the mechanism of B diffusion in a-Si:H is presented in this paper as well.
CHARACTERISTICS OF PINNING FORCE IN LOW FIELD FOR Tl2Ba2Ca2Cu3Oy SUPERCONDUCTOR
Authors: DING SHI-YING  , SHI ZHI-XIANG  , TAN JIA-LIE  , YU ZHENG  , SHI KE-XIN  , TONG HONG-WU  , QIU LI  ,   南京大学物理系,南京,210008
Published: December 2020

By measuring magnetization curves of polycrystalline Tl2Ba2Ca2Cu3Oy superconductor, magnetitudes of the hysteresis against temperature T and applied field Ba have been obtained. Using the critical state equation, we have got an effective pinning force which varies with temperature and field and results from both contributions of winklinks and intragrain pinning. Peak effect of the effective pinning force has been found, and the peak moves to higher fields with temperature dropping. The peak effect is considered to be the results of two pinning mechanisms, which have different field relations. Finally, some discussions about the results are made.
TWO DIMENSIONAL MAGNETISM AND DEAD LAYER EFFECT IN COMPOSITIONALLY MODULATED FeSi/Si FILMS
Authors: LIU YI-HUA  , MA XIAO-DING  , MEI LIANG-MO  ,   山东大学物理系,济南,250100
Published: December 2020

The compositionally modulated amorphous films FeSi/Si have been prepared successfully. Systematically varying the thickness dm of the FeSi layers with fixed thickness of Si layers, it is shown that the saturation magnetization Ms decreases monotonously with decreasing dm. This basically is the contribution from the dead layer effect. The thickness of dead layer at OK is about 5.8?. With decreasing dm, the modulated films transit from three dimensional magnetism to two dimensional one gradually. The expressions of this transition are the appearances of low magnetic and nonmagnetic hysteresis effect, the linear Ms(T)-T relations and the monotonous decreasing of Curie temperature Tc. Tc satisfies the equation: △Tc∝dm-1, where λ=1.6.
BIELECTRON INTERACTION IN HELIUM ATOM AND THE CORRESPONDING SPECTRAL STATISTICAL FLUCTUATION PROPERTIES
Authors: LI JUN-QING  , GU JIN-NAN  , ZHU JIE-DING  ,   (1)兰州大学现代物理系,兰州,730001; (2)中国科学院近代物理研究所,兰州,730000
Published: December 2020

The spectral fluctuation properties of a quantum system are related closely to the dynamical symmetries of the system and its nonlinearity but not dependent upon number of the degrees of freedom. The energy spectrum of Helium atom is calculated, and by analysing the spectral fluctuations it is found that the residual one pair electron-electron interaction is not sufficient to change the dynamical symmetry of the nucleus-electron central field, eventhough the interaction is amplified artificially to a possible extent (as far as the dissociation of the system does not occur). It turns out that the contour plot of the potential intuitively gives the information about the symmetry of the system, indicates the degree of the symmetry breaking as well as the way how the symmetry is lost.
MULTIPLE-SCATTERING EXPANSION METHOD FOR (e,2e) COLLISIONS OF ATOMIC HYDROGEN
Authors: CHEN XUE-JUN  , ZHENG LIANG-YOU  ,   (1)清华大学现代应用物理系,北京,100084;中国高等科学技术中心(世界实验室); (2)西安交通大学物理系,西安,710049
Published: December 2020

The multiple-scattering expansion method proposed in Ref [6] has been applied to the calculations for the triple differential cross sections of the (e,2e) collisions of atomic hydrogen under the Ehrhardt geometric conditions. The present results are in good agreement with the experimental data.
ELECTRONIC SPECTRUM OF TWO-DIMENSIONAL FIBONACCI QUASICRYSTALS
Authors: FU XIU-JUN  , CHENG BO-LIN  , ZHENG DA-FANG  , LIU YOU-YAN  ,   (1)华南理工大学应用物理系,广州,510641; (2)内蒙古师范大学物理系,呼和浩特,010022
Published: December 2020

By means of the decomposition-decimation method based on the renormalization-group technique, we have studied the properties of electronic energy spectrum for the two-dimensional Fibonacci quasicrystals. It is found that the spectrum has a multifurcating structure which is very different from the monofurcating structure of one-dimensional Fibonacci quasicrystals. By using the four-fold symmetry of the Fibonacci quasilattice under study, we have reduced the Hamiltonian and then performed a numerical simulation, the results of which are consistent with the analytical ones.
PICOSECOND PHOTOLUMINESCENCE IN a-Si:H/a-SiNx:H MULTILAYERS
Authors: HUANG XU-GUANG  , WANG HE-ZHOU  , SHE WE-LONG  , LI QING-XING  , YU ZHEN-XIN  , JIN BO  , PENG SHAO-QI  ,   (1)中山大学激光与光谱学研究所,广州,510275; (2)中山大学物理系,广州,510275
Published: December 2020

The initial dynamics of photogenerated carriers in a-Si:H/a-SiNx:H multilayers has been investigated with time-resolved laser spectroscopy. The mechanisms of thermalization and recombination of these carriers are analysed. The results also reveal that the decay time cutoff, the mobility edge and the band-tail width vary non-monotonously with respect to nitrogen content with a turning point near x = 0.85, which may result from the changes of the internal electric field and the structure of multilayer with nitrogen content.
FLUX TRANSITION PROPERTIES OF RF-SQUID IN THE DIS-SIPATIVE MODE IN THE PRESENCE OF LARGE FLUCTUATION
Authors: WANG XIAO-HUI  , JIN XIN  , YAO XI-XIAN  ,   南京大学物理系,南京,210008
Published: December 2020

In the presence of large thermal fluctuation, conditions that RF-SQUID in the dissipa-tive mode can be properly operated are analysed, the flux transition distribution densities are obtained, thus the mean value and the width of transition are derived. Finally we find that the-effective critical current of RF-SQUID loop is greatly reduced by large fluctuation and the transition width can be determined with a simple equation.
PROPAGATION OF NONLINEAR MAGNETOSTATIC SURFACE WAVES ON FERROMAGNETIC FILM
Authors: A. D. BOARDMAN  , BAO JIA-SHAN  , WANG QI  , CAI YING-SHI  , S. A. NIKITOV  ,   (1)Department of Pure and Applied Physics,University of Salford,UK.; (2)Institute of Radio Engineering and Electronics,USSR Academy of Science,Moscow,USSR; (3)上海科学技术大学物理系,上海,201800
Published: December 2020

The wave equation for nonlinear magnctostatic surface waves (MSSW) on ferromagnetic film is derived with perturbation theory under the condition of transverse magnetisation, and its solution is found. The nonlinear dispersion relation shows that a high wave power results in a reduction of frequency band of MSSW. The variations of group velocity dispersion and nonlinear frequency shift with the wave frequency and film thickness are also studied. The results show that the bright pulse envelope solitons can not exist in our case.
SOLUTIONS TO THE q-DEFORMED OSCILLATOR SYSTEM AND THE Hq(4) SYMMETRY
Authors: YAN HONG  ,   中国科学院理论物理研究所,北京,100080;中国高等科学技术中心(世界实验室)
Published: December 2020

A discussion on the q-oscillator system and the algebra Hq(4) is presented, emphasizing the case of |q| = 1 in particular. A remarkable connection between algebras SUq(2) and Hq(4) is given. The single q-oscillator system is solved and shown to be analogous to the parafermion-(PF), with the specific cases analogous to 2nd and 3rd order PF's discussed in detail. The properties of the representations of Hq(4) and a finite chain model of q-oscillators are discussed-
K-STRUCTURES OF THE CSM WAVE FUNCTIONS OF 164Er96 AND 166Er98
Authors: LIAO BO-QIN  , LIN XIN-WEI  ,   西南师范大学物理系,重庆,630715
Published: December 2020

The K-structures of the CSM wave functions in 164Er96 and 166Er98 were analyzed in the represention, the bases of which are characterized by the quantum numbers N,π,r,v,K,E1. The K-structure becomes complex as ω increases and the system becomes axially asymmetric. The calculation shows that the K-structure of the yrast band in 164Er96 is very similar to that in 166Er98, but the K-structure of the yrare band in 164Er96 is quite different from that in 166Er98.
MOVING REFRACTIVE-INDEX PHASE GRATING AND BACKWARD PHOTOREFRACTIVE SCATTERING
Authors: LING ZHEN-FANG  , LIU SI-MIN  , GUO RU  , ZHANG GUANG-YIN  ,   南开大学物理系,天津,300071
Published: December 2020

According to Kukhtarev photorefractive theory, spontaneous generated moving refractive-index phase grating and strong backward photorefractive scattering produced by the phase grating in LiNbO3: Fe crystals are analysed.
COUPLING OF MELTING-SOLIDIFICATION PHASE CHANGE CONVECTION WITH FLOATING ZONE CONVECTION UNDER MICROGRAVITY
Authors: XIONG BIN  , TANG ZE-MEI  , HU WEN-RUI  ,   中国科学院力学研究所,北京,100080
Published: December 2020

A finite element algorithm is used to analyze the process of floating zone Gystal growth under microgravity. The effect of phase change convection coupled with surface tension convection is considered. The results show that the rate of crystal growth is very important. The single-crystal-melt interface is steeper than the feed-melt interface during the process of crystal growth. When the rate exceeds a critical value, the Marangoni vortex nearby the feed-melt interface will become so large that a secondary vortex exists.
PROGRESSIVE WAVES AS SOLUTIONS TO VARIOUS NO NLINEAR WAVE EQUATIONS
Authors: TANG SHI-MIN  ,   北京大学力学系,北京,100871
Published: December 2020

Progressive waves expressed by rational combination of elliptic functions in general and solitary waves, solitons and kinks in special cases are found as solutions to various nonlinear wave equations.
STUDY ON HIGH-FIELD ELECTRON TRAPPING AND DETRAPPING PROPERTY IN THIN SiOx Ny FILMS
Authors: YANG BING-LIANG  , LIU BAI-YONG  , Y. C. CHENG  , H. WONG  ,   (1)华南理工大学应用物理系,广州,510641; (2)香港城市理工学院,香港
Published: December 2020

The electron trapping at high-field and detrapping in thin thermally nitrided silicon oxide (SiOxNy) films are studied in the present work. It is observed that when the nitridation degree is the lighter, with the increasing of the nirridation time the effective electron trap surface concentration in the films increases rapidly, and the detrapping ratio of trapped electrons is almost zero and independent of the shorting time for samples and the strength (until 8MV/cm) and duration of application of external reverse field, and the depth of the electron trap level is the deeper; when the nitridation degree is the heavier with the further increasing of the nitridation time the effective electron trap surface concentration decreases and the depth of electron trap level becomes shallow gradually, and the detrapping ratio of trapped electrons gradually increases and is approximately dependent exponentially on the strength and duration of time application of external reverse field and is almost independent of the shorting time for the samples.
CHANGE OF ELECTRONIC STRUCTURES CAUSED BY LOCAL SUBSTITUTION OF Zn FOR Cu IN YBa2Cu3O7 MATERIAL
Authors: WANG CHENG-ZHANG  , WANG HUAI-YU  , ZHANG LI-YUAN  ,   北京大学物理系,北京,100871
Published: December 2020

Using Recursion method, we have studied the change of electronic structures caused by local substitution of Zn for Cu(2) in YBa2Cu3O7 material. It is found that the substitution has important effect on the properties of the substituted site and its neighbours, which include the partial wave densities of states, the type and strength of bonds, and the atomic valence of sites. On the basis of calculations, we analyze the mo ement of charge and believe that the decrease of hole concentration in CuO2 layers is the dominant factor in lowering the superconducting transition temperature of YBa2Cu3O7 when Zn substitutes Cu in small amounts.
Sn4+ MONTMORILLONITE——A Sn4+ CATION CONDUCTOR
Authors: WANG YI-ZHEN  , WANG DA-ZHI  , ZHANG DAO-YUAN  , ZHAO JIAN-XING  , HE XIANG-YONG  ,   (1)上海电力学院,上海,200090; (2)中国科学技术大学材料科学与工程系,合肥,230026
Published: December 2020

A four valence cation conductor Sn4+ Montrnorillonite has been obtained in our lab. The valence state of migrating ion Sn4+ was confirmed with Mossbauer spectroscopy. Its electron eonductivity and AC conductivities were 5.1×10-7 and 1.5×10-4(S/cm) respectively. Some Sn/MnO2 batteries were made using this solid electrolyte with 1.2V OCV and 5mA short current for 13mm×3mm size.
AN ANALYSIS OF ENERGY LEVEL STRUCTURES FOR SINGLE IONIZED ALUMINUM BY MQDT
Authors: YANG LI  ,   郑州测绘学院物理系,郑州,450052
Published: December 2020

All the perturbed Rydberg series, i. e., 3sns 1S0,3snp 1P1O, 3P0,1,2O,3snd 1D2 and 3snf 3F2,3,4O, have been studied by the multichannel quantum defect theory (MQDT). The analysis show that, the first two series are weakly disturbed, the rest, however, are strongly perturbed by the core-excited states: 3p4s 1P1O,3p2 1D2 and 3p3d 3F2,3,4O, respectively and 3snf 1F3O by 3p3d 1F3O which may be located 5613 cm-1 above the first ionizing potential according to our estimation. This prediction agrees with those made by other authors.
ELECTRONIC STRUCTURES OF DOPED HCP CLUSTERS Al12M
Authors: WU JI-AN  , DAI MING  , NI GUO-QUAN  , ZHOU RU-FANG  ,   (1)中国科学院半导体研究所,北京,100083;中国科学院量子光学开放研究实验室,上海,201800; (2)中国科学院上海光学精密机械研究所,中国科学院量子光学开放研究实验室,上海,201800
Published: December 2020

Xα-SW SCF calculations have been carried out for hep structure cluster Al12M, where M is one of 3d transition metal impurity atoms Cr, Mn, Fe, Co and Ni. The calculated results indicate that the electronic structures near the Fermi levels are notably influenced by the impuriy atoms. With the variation of impurity atomic numbers the ionization potentials of the systems vary not monotonously.
INFLUENCE OF CHLORIDE IONS ON SERS IN Ag SOL
Authors: FU SHI-YOU  , ZHANG PENG-XIANG  , LI XIU-YING  ,   中国科学院物理研究所,北京,100080
Published: December 2020

The influence of chloride ions on SERS of PABA (p-aminobenzioc acid) and pyridine in Ag sol were discussed. SERS of PABA in Ag sol, the influence of chloride ions on and the time dependence of SERS intensities were obser ved. It was found that the decrease of SERS intensity was caused by that the solid like phase adsorption of PABA was destroyed and the molecular adsorption state was changed dut to the competitive adsorption of chloride ions. Besides, the influence of chloride ions on the time dependence of SERS intensities of a mixture of PABA/Ag sol and pyridine/Ag sol and on the light absorption of PABA and pyridine in Ag sol were studied. These experimtnts show that the influence of chloride ions on SERS in our system are mainly chemical.
X-RAY PROFILE ANALYSIS ON DEFORMED SEMICRYSTAL LINE POLYETHYLENE FILMS
Authors: TENG FENG-EN  , HAN WEI  , LIU YAN-LING  , WANG YU-MING  ,   吉林大学材料科学研究所,长春,130023
Published: December 2020

Analysis of X-ray scattering and diffraction profile for the uniaxial tensile specimens of polyethylene films at different deformation stages have been performed at room temperature. The results show that within elastic region before yielding and post-yield region, the micros-train (distortion) increases notably and the micrograin size does not change much, but within constant stress region of plastic flow, micrograin size decreases rapidly and microstrain changes only a little.
EFFECTS OF STRUCTURE IN RUBIDIUM ACID PHTHALATE (RAP) ON ITS SINGLE CRYSTAL GROWTH HABIT AND DEFECT FORMATION
Authors: HUANG YI-SEN  , ZHAO QING-LAN  ,   中国科学院福建物质结构研究所,福州,350002
Published: December 2020

Large perfect crystals have been grown by using (001) seed plates from aqueous solution. It is shown that the great difference in the growth rates along positive and negative a-axis directions and the defect formation are closely related to the orientation of the key groups of carboxyl radicals(I) and the open structure (mainly the structural channels A and B), respectively. A proposal for improving the quality of crystals by changing the orientation of the polar axis a is given.
ATUDY OF INTERFACE PROPERTIES OF a-Si:H/a-SiNx:H MULTILAYERS BY PAT
Authors: WANG ZHI-CHAO  , TENG MIN-KANG  , LIU YIN-CHUN  ,   南京大学物理系,南京,210008
Published: December 2020

A series of a-Si:H/a-SiNx:H(x=0.5) multilayers are studied by positron annihilation technique (PAT). It is found that a large number of defects are induced in the interface region of a-Si:H/a-SiNx:H multilayers, owing to the structure mismatch of a-Si:H and a-SiNx:H. In the a-Si:H sublayer, there is a strained layer close to the interface, its thickness is about 8?, and a transition layer above the strained layer, its thickness is about 50?. There are a large number of defects in the transition layer, they are called the "interface defects".
PHOTO-INDUCED ABSORPTION IN POLYDIACETYLENE SINGLE CRYSTAL
Authors: PENG JING-CUI  ,   湖南大学应用物理系,长沙,410082
Published: December 2020

Photo-induced absorption in poly (bis (p-toluene sulphonate) ester of 2,4-hexadiyne-1, 6-diol) (PDA-TS) single crystal is studied theoretically. A mechanism of photo-induced absor-ption is proposed as exciton excitation. The binding energies for single and triple excitons are calculated and the photo-induced absorption peak at 1.35eV is considered as resulting from the transition 3Ag→3Bu. This agrees with experimental data.
CIRCULARLY SYMMETRIC SOLITON SOLUTION IN AN ANNULAR JOSEPHSON JUNCTION
Authors: WANG QIANG-HUA  , WANG WEI  , YAO XI-XIAN  ,   南京大学物理系非线性动力学中心,南京,210008
Published: December 2020

We have analysed the circularly symmetric sine-Gordon equation with bias and dissipation by means of a simplified perturbation theory. Analytic solutions that describe the dynamical behaviour of a quasisoliton trapped within the annular junction have been obtained. Between the results of our theory and numerical simulation, there exists a good agreement for the first zero field step (ZFS) in the l-V characteristic. A brief discussion of our results is also presented.
STABILITY OF STRIPE DOMAINS AND BUBBLE DOMAINS UNDER BOTH IN-PLANE FIELD AND STATIC BIAS FIELD
Authors: HUO SU-GUO  , NIE XIANG-FU  , HAN BAO-SHAN  ,   (1)河北师范大学物理系,石家庄,050016; (2)中国科学院物理研究所磁学开放研究实验室,北京,100080
Published: December 2020

The erasing process of stripe domains in (111)-oriented garnet bubble films was investigated experimentally in the presence of both an in-plane field Hin and a static bias field Hb. As Hb was kept constant and Hin was raised, the stripe domain erasing field Hs* and the bubble domain erasing field Hk* were measured as functions of the azimuthal angle β of the in-plane field. Taking the cubic magnetocrystalline anisotropy into account, we established a theory of stability of stripe domains subjected to both an inplane field and a static bias filed. The main features of the experimental results can be explained qualitatively by this theory. The angle at which both white and black domains are erased at the same time was obtained as βn=1/3(2nπ±arc cos│3/(21/2)(MsHb)/K1│)(n=0,±1,±2,…) which is in reasonable agreement with the experiments.
NULL GEODESICS AND THE STABILITY OF THE NONSING-ULAR SCHWARZSCHILD BLACK HOLE
Authors: SHEN WEN-DA  , ZHU SHI-TONG  ,   (1)上海科学技术大学物理系,上海,201800; (2)中国科学院上海光学精密机械研究所,上海,201800
Published: December 2020

The null geodesies and the stability of the nonsingular black hole are further investigated. The results show that null geodesies in the nonsingular Schwarzschild black hole are also complete as the timelike geodesies and a stable nonsingular black hole can exist.
SOLITON-LIKE SOLUTIONS OF GENERALIZED KdV EQUA-TION WITH EXTERNAL FORCE TERM
Authors: ZHU ZUO-NONG  ,   江苏农学院基础部,扬州225001
Published: December 2020

In this paper, by means of B?cklund transformation of generalized KP equation, sditon-like Solutions of generalized kdV equation with external force term are obtained
XRD AND EXAFS STUDIES ON THE PROCESS OF RELEASING HYDROGEN FROM NICKEL FOIL PERMEATED WITH HYDROGEN
Authors: HU XIAO-JUN  , WU QIU-LIN  , MAN YI-JUN  ,   首都钢铁公司冶金研究所,北京100085
Published: December 2020

The process of releasing hydrogen from nickel foil permeated with hydrogen is investigated by XRD and a laboratory EXAFS equipment which is attached on a X-ray spectrometer. The results obtained by these two methods show that the phase content of NiH decrease exponentially in this process We also determine a definite atomic ratio of Ni and H in NiH phase and point out the location of hydrogen in the lattice. This laboratory. EXAFS equipment is proved to be suitable for the study of this kind of problem.
A STUDY ON DISSIPATION MECHANISM IN TWO-PHOTON LASER
Authors: PENG JIN-SHENG  , LI GAO-XIANG  ,   华中师范大学物理系,武汉430070
Published: December 2020

In this work, we have respectively investigated two-photon processes of a cascade three-level atom interacting with thermal and vacuum radiation fields by means of non-relativestic QED. We verified the important role of atomic thermal loss and two-photon transtion loss in the disspation processes. We proved the condition under which the thermal fluctuation can be neglected, and discussed, the character of laser cavity in which the two-photon laser can be produced.
LOCAL ELECTRONIC PROPERTIES OF A CLASS OF ONE-DIM-ENSIONAL QUASICRYSTALS
Authors: YAN XIAO-HONG  , YAN JIA-REN  , ZHONG JIAN-XIN  , YOU JIAN-QIANG  ,   湘潭大学科学技术研究所,湘潭411105
Published: December 2020

Using the extended real-space renormalizaation-group approach, we study the local electr-onic properties of a class of one-dimensional quasicrystals (the generalized Fibonacci chains) in the framework of tight-binding model. These quasiperiodic systems are termed the An chains, which are associated with the sequences generated by the inflation rule (A, B)→(AnB, A). We introduce 2n2+1 transformations for calculating the local electronic Green's function and the local electronic density of state at any site in any one of An chains for the diagonal, offdiago-nal and combined models. It is shown that this approach is effective and the local electronic density of states is critical, just as that of Fibonacci quasicrystal.
DISTRIBUTION OF ELECTRONIC LOCALISATION IN THE DISORDERED SYSTEM
Authors: XU HUI  , ZENG HONG-TAO  ,   中南工业大学应用物理系,长沙410083
Published: December 2020

The distribution of electronic localisetion n the disordered system of 2000 particles is obtained by a new method for calculating eigenvector. The distribution is discussed with the density of states and the calculation error. The result shows that the distribution is changed with the energy, the distribution area may cover the entire system, and the distribution is affected by the disorder degree.
ANTIFERROMAGNETIC THEORETICAL CALCULATION FOR HlGH-Tc SUPERCONDUCTORS
Authors: DU AN  , WEI GUO-ZHU  , NIE HUI-QUAN  ,   东北工学院物理系,沈阳110006
Published: December 2020

Considering layer-structural characteristico of high-Tc superconductors, the effective Hamiltonian is derived within linear spin wave approximation for aniso-tropic three-dimensional Hubbard model in the large U limit. The Sublattice magnetization, internal energy, Specific heat, parallel and perpindicular susceptibilies of the system are Calculated by using the equation of motion for matrix Green's function. It is shown that the ratio (δ=J⊥/J) of antiferromagnetic interplanar Coupling to planar coupling has an important effect upon these quantities. In the Low temperature regime T?2J(2+δ)/kB, a characteristic temperature T0=2J(2δ(2+δ))1/2/kB is given, the asympototic expressions of these quantities are respectively obtained for T?T0 and T?T0.
SPIN DEFECT STATES IN HYDROGENATED AMORPHOUS GERMANIUM-CARBON FILMS
Authors: CHEN GUANG-HUA  , YU GONG  , ZHANG FANG-QING  , WU TIAN-XI  ,   兰州大学物理系,兰州730001
Published: December 2020

Using in situ electron spin resonance(ESR) technique, we have studied the type, the density, the temperature dependence and the thermal dynamic behavior of defects in rf-reactively sputtered a-Ge1-xCx: H films. In the decomposition process of the ESR spectra, we found that the spectra have an asymmetrical component. Quantitative analysis of the component and the explanation of its origin are given.
STATISTICAL ANALYSIS OF SIMULATION CALCULATION OF SPUTTERING FOR TWO INTERACTION POTENTIALS
Authors: SHAO QI-YUN  ,   复旦大学物理二系,上海200433
Published: December 2020

This paper presents the effects of the interaction potentials(Moliére pntpntial and Universal potential) on computer simulation results of sputtering via Monte Carle simelation based on the binary collision approximation. By means of Wilcoxon two-Sample paired sign rank test, the statistically significant difference for the above results is ob tainad.
PHASE FORMATION IN DROP TUBE PROCESSING FROM UNDERCOOLED Pd77.5Au6Si16.5 MELT
Authors: MAO ZI-LI  , LI CHAO-RONG  , SHAO XIU-YU  , CHEN HONG  , WANG WEN-KUI  ,   (1)中国科学院物理研究所,北京100080; (2)中国科学院物理研究所,北京100080;中国科学院国际材料物理中心,沈阳110015
Published: December 2020

The Pd77.5Au6Si16.5 alloy was studied by means of a drop tube processing. Pd solid solution phase was found in smaller droplets (diameter D3Si was observed. The difference of free energy between underco-oled liquid and solid state, the activation energy for the formation of postcritical nuclei, tie nucleation rate and the speed of crystal growth were calculated as a function of temperature for Pd solid solution and PdsSi phases, these calculations led to time-temperature-transforma-tion curves which may be used to describe the experimental findings oa the kinetics of solidification of this alloy.
BACKSCATTERING OF ELECTROMAGNETIC MISSILES BY A PERFECTLY CONDUCTING CYLINDER WITH ARBITRARY CROSS SECTION
Authors: WEN GB-YI  , RUAN CHENG-LI  , LIN WEI-GAN  ,   电子科技大学应用物理研究所,成都610054
Published: December 2020

In this paper, we present a general study on backscattering of electromagnetic (EM) missile by a perfectly conducting cylinder of arbitrary cross section. We find that, when an EM missile with energy decreasing as r-ε(0 -εR/(2r + R), where R is the radii of curvature at tie specular point of the target.
LONG-TIME BEHAVIOR OF SQUEEZING OF COHERENT LIGHT IN OFF-RESONANCE JAYNES-CUMMINGS MODEL
Authors: CAO CHANG-QI  , DING XIAO-HONG  ,   北京大学物理系,北京100871
Published: December 2020

The long-time behavior of squeezing of intense coherent light is studied with off-resonance Jaynes-Cummings model. The interaction between field and atom includes both one-photon transition type and two-photon transition type. The analytical formulae for quadrature variances are obtained. In one-photon transition case, small detuning only has small effect on squeezing. For two-photon transition, however, the situation is quite different. No squeezing will occur in resonance case. Only detuning can cause squeezing. Then a series of minimum appear in the suppressed quadrature variance during time evolution. In Urge N limit this se-ries tends to zero.
DEGENERATE QUANTUM-BEAT LASER
Authors: HU XIANG-MING  ,   华中师范大学应用物理研究所,武汉430070
Published: December 2020

Both Λ-type system and V-type one can show lasing without inyersion and inversion without lasing due to atomic coherence. Spontaneous emission noise of Λ-type laser is reduced due to coherent substraction but that of V-type laser is reduced due to coherent addition
EFFECT OF ELECTRON PLASMA WAVE ON THE PROPA-GATION OF AN ULTRASHORT-PULSE LASER
Authors: SHENG ZHENG-MING  , MA JIN-XIU  , XU ZHI-ZHAN  , YU WEI  ,   中国科学院上海光学精密机械研究所,上海201800
Published: December 2020

Unification of the frequency shift and pulse compression of an ultrashort laser pulse propagating in a background plasma wave is realized by employing the concept of phase modulation of the laser pulse by the plasma wave. The equation for the evolution of the pulse width is obtained, which is analogues to the "energy conservation equation" for a classical particle moving in a potential well. The threshold amplitude of plasma wave for the pulse compression is estimated. Numerical calculation is performed to confirm these results. The possibitity of laser pulse compression by plasma wave in practice is suggested finally.
LOCAL STRUCTURE AND BOND ORIENTATION ORDER OF LIQUID NOBLE METAL Au AND Ag
Authors: CHEN KUI-YING  , LI QING-CHUN  ,   哈尔滨工业大学金属材料与工艺系,哈尔滨150006
Published: December 2020

Based on the embedded-atom-method, the st ructures of liquid noble metal Au and Ag have been investigated using Molecular Dynamics computer simubation. Results show that, near the melting point, there exists local cubic symmertry, and long-range correlations among these symmertries, are very weak.
CRYSTAL HABIT AND SURFACE OXIDE FILM ANALYSIS OF Fe NANO-PARTICLES
Authors: SUN XIU-KUI  , CHEN WEN-XIU  , XU JIAN  , FAN XUE-SHU  , WEI WEN-DUO  , WANG WEN-HAO  ,   (1)中国科学院金属研究所结构分析室,沈阳110015; (2)中国科学院金属研究所快速凝固非平衡合金国家重点实验室,沈阳110015
Published: December 2020

The crystal habit and size of the Fe nano-particles prepared by an inert gas evaporation method have been observed with transmission electron microscope. The composition, structure and thickness of the surface oxide film on the Fe nano-particles have been analysed in detail by means of several techniques, such as, X-ray diffraction, electron diffraction, X-ray photo-electron spectrum and Auger electron energy spectrum. A model of the composition and structure for these particles has been given. The results show that the crystalline structure of the Fe nano-particles is consistent with the general α-Fe, i.e. bcc structure. On the surface of these particles, there are double layers of the oxide film with about 3 nm thickness, in which the outside is γ-Fe2O3 of about Inm thickness and the inside is Fe3O4 of about 2 nm thickness. The crystal structure of the two kinds of oxide are of cubic spinel-type. The results also indicate that the Fe nano-particles prepared by the gas evaporation method are very stable in dry air. Though the oxide film is thin, it is quite compact and give good protective effect on the particles.
POLARONS IN HIGH INSULATORS
Authors: LI JING-DE  , LU XIA-LIAN  , LEI DE-MING  ,   中山大学物理系,广州510275
Published: December 2020

Using a special lock-in amplifier, the surface and volume conductivities of three kinds of high insulators are measured from -20℃ to 180℃. Hopping and band conductions of conductive polarons are observed in LiNbO3, the transition temperature between the two- conductive states is about 38℃. A conductive polaron can be captured by a trap and becomes a bound polaron. The bound polaron is not an electric carrier, but under the action of external field, its position may be changed to give an ultralow frequency polarization effect. There are many ferroelectric screenning charges on the surface of LiNbO3 and LiTaO3, however, their conductive currents are not so large as those of glass. But the screenning charges supply very large displacement currents. The fact shows that these screenning charges are in bound polaron state. The phenomenon of that the displacement current shows anomalous at about 45, 75, and 130℃ is observed in LiNbO3.
STUDIES OF INTERNAL STRESS IN DIAMOND FILMS PREPA-RED BY DC PLASMA CHEMICAL VAPOUR DEPOSITION
Authors: WANG WAN-LU  , GAO JIN-TING  , LIAO KE-JUN  , LIU AN-MIN  ,   兰州大学物理系,兰州730000
Published: December 2020

The internal stress in diamond thin films deposited by DC plasma CVD was studied as a function of methane concentration and deposited temperature. Experimental results have shown that total stress in diamond thin films is sensitive to the deposition conditions. The results also indicate that the compressive stress can be explained in terms of amorphous state carbon and hydrogen, and tensile stress is ascribed to the grain boundary relaxation model due to high internal surface area and micristructure with voids.
INTERACTION BETWEEN NARROW WAVE BEAM-TYPE HIGH FREQUENCY GRAVITATIONAL RADIATION AND ELECTROMAGNETIC FIELDS
Authors: LI FANG-YU  , TANG MENG-XI  , ZHAO PENG-FEI  ,   (1)雷州师范专科学校物理系,湛江524048; (2)中山大学物理系,广州510275; (3)重庆大学应用物理系,重庆630044
Published: December 2020

Starting with the Einstein-Maxwell equations of weak gravitational field, we discussed the interaction between narrow wave beam-type high frequency gravitational radiation of crystal space array and electromagnetic fields. The perturbed solutions have been obtained. By our calculation, it is shown that this gravitational wave beam with optimal radiation direction is purely + type polarized in TT coordinate system, and it can make electromagnetic wave, which has the same frequency, to generate perturbed effects of frequency doubling, make static electromagnetic fields to generate cumulative effect linear in time. For the gravitational radiation wave beam with an arbitrary direction, it is also purely+type polarized in the plane perpendicular to the gravitational wave vector. Under the condition of high frequency radiation and laboratory's typical size, difference between TT coordinate and Fermi coordinate systems can be neglected.
ZONE-FOLDED LA PHONONS IN AMORPHOUS SEMICONDUCTOR SUPERLATTICES
Authors: XU JUN  , CHEN KUN-JI  , HAN HE-XIANG  , LI GUO-HUA  , WANG ZHAO-PING  ,   (1)半导体超晶格国家重点实验室,北京100083;中国科学院半导体研究所,北京100083; (2)南京大学物理系固体微结构物理实验室,南京210008
Published: December 2020

In this paper, we report the systematic results of folded LA phonon modes in the a-Si: H/a-SiN:H and a-Si: H/a-SiC:H periodic superlattices. We use the elastic continuum model to obtain the theoretical results, which are in good agreement with the experimental values. Finally, the problem of the existence of frequency-gap at the center of the Brillouin zone is briefly discussed.
RAMAN INTERACTION OF A PAIR OF TWO-LEVEL ATOMS WITH A RADIATION FIELD
Authors: LUO ZHEN-FET  , XU ZHI-ZHAN  , XU LEI  ,   (1)中国科学院上海光学精密机械研究所,上海201800; (2)中国科学院上海原子核研究所,上海201800
Published: December 2020

The Raman interaction of a pair of two-level atoms with the radiation field is studied. The emission spectra for two interacting processes are calculated in which either two atoms couple to the field with different constants or with the same constant but at the same time the dipole-dipole interaction between two atoms being included in the consideration. The effect of the relative value of two atom-field coupling constants and also that of atomic dipole-dipo-le interaction on the emission spectra are analyzed.