bluuebunny/crossref_metadata_2025 huggingface dataset:
MEASUREMENT OF THE SPECIFIC CONTACT RESISTANCE OF Au/Ti/p-DIAMOND USING TRANSMIS SION LINE MODEL
Authors: WANG YIN-YUE  , ZHEN CONG-MIAN  , GONG HENG-XIANG  , YAN ZHI-JUN  , WANG YA-FAN  , LIU XUE-QIN  , YANG YING-HU  , HE SHAN-HU  ,   兰州大学物理系，兰州  730000
Published: December 2020

The measurements of the specific contact resistance (ρc) were carrie d out for Ti/Au ohmic contact to heavily boron-doped p-diamond (～1020cm-3) by the transmission line model (TLM).I-V measurements were per formed before and after annealing at 500℃,as well as in big current cases.The a nnealing effects on the ρc value were investigated.It is shown that heavy doping of the semiconductor and annealing are effective means to improve o hmic contacts.The changes of ρc value with the operating temperature are discussed.We suggest that the dominant transport mechanism at the metal/sem iconductor interface is tunneling.No light effects on the ρc value h ave been observed,the results show that diamond can be an ideal window material. In our experiments,the smallest ρc value of the Au/Ti/p-diamond reac hes ～10-4Ωcm2.
STUDY ON THE TECHNOLOGY AND PROPERTY FOR Y2BaCuO5 PARTICLE S ARTIFICIAL DOPING TO OBTAIN SINGLE-CRYSTAL DOMAIN MELT-TEXTURED YBCO BULK SUPE RCONDUCTOR
Authors: SHA JIAN-JUN  , YAO ZHONG-WEN  , YU JIN-NAN  , YU GANG  , LUO JIN-HAN  , WEN HAI-HU  , YANG  WAN-LI  , LI SHI-LIANG  ,   (1)宁夏大学物理与电子信息工程系，银川  750021; (2)中国科学院物理研究所，北京  100080; (3)中国原子能科学研究院，北京  102413
Published: December 2020

This paper describes the method of artificial doping Y-211 phase and melt-textur ed growth with a top-seeded technique to prepare the quasi-single crystal domain YBCO bulk materials with various Y-211 particle contents.The specimens obtained have high density (more than 62g/cm3) and good mechanical toughnes s.The Jc of specimens reaches 123×106A/cm2 u nder 06T at 30K and 135×104A/cm2 under 2 T at 70K.The scanning electron microscope observation of specimens indicates that Y-211 part icles can improve the quality of melt-textured YBCO superconductor and reduce th e microcrack of specimens.Combining the microstructures with Jc measu rements shows that the smaller the particle size,the more homogeneous the partic le distribution,the higher the pinning effectiveness.The best ratio of Y-123 to Y-211 for the superconductor specimens is 1∶05 in moles,in which the Y-211 pa rticles are uniformly distributed and their size is about 200nm.
BLUE-LIGHT ENHANCEMENT EFFECT IN ION IMPLANTED NANO-Si3N4 QUANTUM DOTS
Authors: TU XIAN-HUA  , LI DAO-HUO  ,   中国科学院安徽光学精密机械研究所，合肥  230031
Published: December 2020

Blue light (449nm) has been observed at room temperature and it has been multip le enhanced (up to 6.3 times) in ion implanted samples. The quantum confinment-l uminence center model can well explain it. A new type of material that can emit blue light has been prepared.
ANALYSIS OF PROPERTIES OF HIGH-ELECTRON-MOBILITY-TRANSISTOR UNDER OPTICAL ILLUMI NATION
Authors: Lv YONG-LIANG  , ZHOU SHI-PING  , XU DE-MING  ,   (1)上海大学通信工程系，上海  201800; (2)上海大学物理系，上海  201800
Published: December 2020

We studied the dynamical behaviors of the depletion-mode AlGaAs/GaAs high-electr on-mobility transistor under optical illumination. The photovoltage effect and t he photogenerated carriers contribution to the space charge concentration were t aken into account. The pinch-off voltage, the sheet concentration of two-dimensi onal electron gas (2-DEG) located at the interface of the heterojunction, the I- V characteristic curve, and the transconductance were investigated by using the charge-controlling model. We found that the pinch-off voltage was lowered and th e sheet concentration of 2-DEG was increased because of the optical illumination , which, in turn, resulted in an increase in the current gain and the transcondu ctance of the device.
CONNECTIONS AMONG HOMOGENEOUS BALANCE METHOD, WEISS-TABOR-CARNEVALE METHOD AND CLARKSON-KRUSKAL METHOD
Authors: FAN EN-GUI  ,   复旦大学数学研究所，上海  200433
Published: December 2020

The homogeneous balance method is extended to search for the Bcklund transformations and similarity reductions of nonlinear mathematical and physical equations. The corresponding results coincide with those of Weiss-Tabor-Carnevale method and Clarkson-Kruskal method respectively. It is shown that there exist close relations among these three methods.
APPLLICATIONS OF AVERAGE-BOND-ENERGY METHOD IN STRAINED-LAYER HETEROJUNCTION BAND OFFSET
Authors: LI SHU-PING  , WANG REN-ZHI  , ZHENG YONG-MEI  , CAI SHU-HUI  , HE GUO-MIN  ,   厦门大学物理学系，厦门  361005
Published: December 2020

We have extended the average-bond-energy method to the study of strained-layer heterojunction band offset. Through a careful study of the effect of hydrostatic strain and uniaxial strain on band offset parameter Emv, we find that the average band offset parameter Emv,av(Emv,av=Em-Ev,av) is largely kept unchanged under different strain conditions. So, in the calculation of strained-layer band offset parameter Emv, it is only required the unstrained band offset parameter Emv,0, a deformation parameter b and the experimental value of spin-orbit splitting Δ0 to calculate the value of strained-layer Emv by simple algebraic operation. Obviously, it will be very convenient to calculate the valence band offset of heterojunction. The simplifed calculation scheme has the characteristic of small calculation amount and the calculation reliability can be improved by using the experimental value.
QUANTUM NONDEMOLITION MEASUREMENTS IN DEGENERATE OPTICAL PARAMETRIC OSCILLATOR
Authors: WANG DAN-LING  , GONG  QI-HUANG  , WANG KAI-GE  , YANG GUO-JIAN  ,   (1)北京大学物理系，人工微结构和介观物理国家重点实验室，北京  100871; (2)北京师范大学物理系，北京  100875
Published: December 2020

The knowledge about nonlinear quantum optics is applied to the study of the degenerate optical parametric oscillator as a quantum non-demolition (QND) measurement device. We find that the model can perform a perfect QND measurement at the threshold in the resonant case, and the optimum QND measurement occurs at the nonlinear double resonances in the detuning case.
A COLLISION MODEL IN PLASMA PARTICLE SIMULATIONS
Authors: MA YAN-YUN  , CHANG WEN-WEI  , YIN YAN  , YUE ZONG-WU  , CAO LI-HUA  , LIU DA-QING  ,   国防科技大学应用物理系，长沙  410073
Published: December 2020

In order to offset the collisional effects reduced by using finite-size particles,β particle clouds are used in particle simulation codes (β is the ratio of charge or mass of modeling particles to real ones).The method of impulse approximation (strait line orbit approximation) is used to analyze the scattering cross section of β particle clouds plasmas.By this way,we can obtain the relation of the value of a and β and scattering cross section (a is the radius of β particle cloud).By using this relation we can determine the value of a and β so that the collisional effects of the modeling system is correspondent with the real one.We can also adjust the values of a and β so that we can enhance or reduce the collisional effects fictitiously.The results of simulation are in good agreement with our theoretical ones.
ELECTRONIC STRUCTURES OF PbWO4 CRYSTAL CALCULATED IN TERMS OF DENSITY FUNCTIONAL THEORY
Authors: TONG HONG-YONG  , GU MU  , TANG XUE-FENG  , LIANG LING  , YAO MING-ZHEN  ,   同济大学物理系，上海  200092
Published: December 2020

The electronic structure of PbWO4 crystal is studied with the relativistic self-consistent discrete variational embedded cluster method in the framework of density functional theory. The results show that the valence band is mainly made up of O2p with a certain amount of W5d component, and the conduction band is mainly made up of the hybrid states of W5d and O2p. The bottom of the conduction band is first found to be occupied by a narrow Pb6p1/2 state. The band gap and the width of valence band are around 4.8 and 4.0eV, respectively. The results can successfully interpret the reflective spectrum of the crystal. The mechanism of the blue luminescence of the crystal is discussed.
ELECTRONIC STRUCTURE OF DIBLOCK COPOLYMER
Authors: LIU DE-SHENG  , XIE SHI-JIE  , HAN SHENG-HAO  ,   (1)山东大学光电研究所，济南  250100; (2)山东大学物理系，济南  250100
Published: December 2020

We proposed a tight-binding model for diblock copolymers. Electronic structure calculations presented for poly(p-phenylene)/polyacetylene revealed that the band gap of copolymers can be tuned by changing the concentration ratio of the homopolymers. The effect of homopolymer interactions on the band structure of copolymers has been studied. The results were compared with the known experimental data.
A SEMIEMPIRICAL STUDY OF THE Sb/Si(001) SURFACE
Authors: HE YAO  , CHE JING-GUANG  ,   复旦大学物理系，应用表面物理国家重点实验室，上海  200433
Published: December 2020

The properties of Sb adsorption on the Si(001) substrate have been studied by us ing the semiempirical approach for calculating the surface stress based on the C hadi's model and the Green's function method. It is shown that the Sb atoms form symmetric dimers on the Si(001) surface with the dimer bond length being 0.293n m. No significant relaxations can be found in subsurface layers. The Sb/Si(001)2 ×1 surface is shown to be under tensile stress of 1.0eV/(1×1cell) along the di mer direction and compress stress of-1.1eV(1×1cell) perpendicular to the dimer direction. The main contribution of surface stress of Sb/Si(001) comes from the top three layers.
MONTE CARLO SIMULATION OF ELECTRON TRANSPORT IN 6H-SiC
Authors: SHANG YE-CHUN  , ZHANG YI-MEN  , ZHANG YU-MING  ,   西安电子科技大学微电子所，西安  710071
Published: December 2020

Temperature-and electric field-dependent electron transport in 6H-SiC has been s tudied by single-particle Monte Carlo technique,and the Hall electron mobility i n 6H-SiC has been measured over the temperature range 77K‖c/μ⊥c in 6H-SiC is nearly 5,and the saturation velocity vs is 2×107cm/s.The simulated results are in good agreement with measured data in a wide range of temperature and electric field.
STUDY ON TRANSPORT PROPERTIES OF TWO-DIMENSIONAL ELECTRON GASES IN n-Hg0.80 Mg0.20Te INTERFACE ACCUMULATION LAYER
Authors: JIANG CHUN-PING  , GUI YONG-SHENG  , ZHENG GUO-ZHEN  , MA ZHI-XUN  , LI BIAO  , GUO SHAO-L ING  , CHU JUN-HAO  ,   中国科学院上海技术物理研究所，红外物理国家重点实验室，上海  200083
Published: December 2020

The transport properties in Hg0.80Mg0.20Te molecular beam epitaxy film has been studied in the temperature range from 15 to 250K by vari able magnetic-field Hall measurement.The experimental data have been analyzed us ing a hybrid approach consisting of the mobility spectrum(MS) technique followed by a multicarrier fitting(MCF) procedure.Both Shubnikov de Hass(SdH) Measuremen ts and the hybrid approach show two- and three-dimensional electronic behaviors. Experimental results indicate that the two-dimensional electrons are due to an a ccumulation layer near the Hg1-xMgxTe-CdTe interface or th e Hg1-xMgxTe-vacuum interface.Ionized impurity scattering of the three-dimension electron mobility dominates at low temperature(considerin g the screening effect) while lattice scattering dominates above 100K.The scatte ring mechanism in Hg1-xMgxTe is very similar to that in Hg 1-xCdxTe.
THE CONSERVATION LAW IN THE DOUBLE-WAVE QUANTUM THEORY
Authors: HUANG CHUN-JIA  , LI JIANG-FAN  , HE HUI-YONG  ,   长沙电力学院物理系，长沙  410077
Published: December 2020

The mathematical formulas of the conservation law in the double-wave quantnm theory are studied.As an example,the constants of motion and their classical limits of a 3-dimensional isotropic harmonic oscillator are discussed.The results indicate that the conservation law of the double-wave quantnm theory is applicable to single particle systems,and the conservation law of the usual quantnm theory is applicable only to statistical ensembles.
PIC SIMULATION OF THE ELECTRON-ION COLLISION EFFECTS ON SUPRATHERMAL ELECTRONS
Authors: WU YAN-QING  , HAN SHEN-SHENG  ,   中国科学院上海光学精密机械研究所，上海  201800
Published: December 2020

The generation and transportation of suprathermal electrons are important to both traditional ICF scheme and “Fast Ignition” scheme. This paper discusses the effects of electronion collision on the generation and transportation of the suprathermal electrons by parametric instability. It indicates that the weak electron-ion term in the PIC simulation results in the enhancement of the collisional absorption and increase of the hot electron temperature and reduction in the maximum electrostatic field amplitude while wave breaking. Therefore the energy and distribution of the supratermal electrons are changed. They are distributed more close to the phase velocity of the electrostatic wave than the case without electron-ion collision term. The electron-ion collision enhances the self-consistent field and impedes the suprathermal electron transportation. These factors also reduce the supratermal electron energy. In addition, we discuss the effect of initial condition on PIC simulation to ensure that the results are correct.
HIGH FIELD TRANSPORT PROPERTIES OF ZnS AT DIFFERENT TEMPERATURES
Authors: ZHAO HUI  , WANG YONG-SHENG  , HOU YAN-BING  , XU ZHENG  , XU XU-RONG  ,   北方交通大学光电子技术研究所，北京  100044
Published: December 2020

Electron-phonon interactions in ZnS are studied. Based on these results, high field transport processes at different temperatures are investigated by means of Monte Carlo method. The transient acceleration time of electrons do not vary with temperature. As the temperature increases, the kinetic energy distribution shifts to lower energy side and the average kinetic energy drops. The intervalley distribution of electrons shifts to lower valley as the temperature increases. The drift velocity of electrons decreases with increasing temperature. The detailed changes of these parameters with temperature are also given in this article.
ANISOTROPY AND COERCIVITY ANALYSIS OF Fe/MnPd BILAYERS
Authors: TANG YUN-JUN  , B.F.P.ROOS  , B.HILLEBRANDS  , ZHAO HONG-WU  , ZHAN WEN-SHAN  ,   (1)Physics Department,University Kaiserslautern,Kaiserslautern 67663,Germany; (2)中国科学院物理研究所与凝聚态物理中心磁学国家重点实验室，北京  100080
Published: December 2020

We present the detailed studies of the exchange bias effect,the coercivity and the enhanced coercivity of exchange bias bilayer Fe/MnPd,both experimentally and theoretically.We have,so far as we know for the first time,demonstrated that the existence of large higher order anisotropies due to exchange coupling between different Fe and MnPd layers can account for the large increase of coercivity in Fe/MnPd system.The linear dependence of coercivity on inverse Fe thickness can be well explained by a phenomenological model by introducing higher order anisotropy term into the total free energy of the system.
HIGHER-ORDER FLUCTUATIONS AND THEIR SQUEEZING OF ANGULAR MOMENTUM IN ATOMIC COHERENT STATES
Authors: DONG CHUAN-HUA  ,   上海大学物理系,上海200072
Published: December 2020

The second-,fourth-and sixth-order fluctuations have been discussed by making use of- SU-(2)Lie algebra.On the basis of higher-order uncertainty relation,the definition of higher-order squeezing for the fluctuations of angular momentum has been put forward.In particular,the second-,fourth-and sixth-order squeezing in atomic coherent states are investigated.These methods and definition can be used for studying much higher-order squeezing.The higher-order squeezing can be generalized to the fluctuations of atomic variances thereby.
CALCULATION AND EVALUATION OF DISPERSIONS IN A FEMTOSECOND PULSE AMPLIFICATION SYSTEM
Authors: ZHANG ZHI-GANG  , SUN HONG  ,   (1)天津大学精仪学院超快激光研究室,光电信息技术科学教育部重点实验室,天津300072; (2)天津大学理学院应用物理学系,光电信息技术科学教育部重点实验室,天津300072
Published: December 2020

Using the ray-tracing method,we demonstrate that a grating-telescope stretcher is the conjugation of a grating pair compressor.We present an analytical formula for calculating the phase dispersions of the grating-telescope stretcher.The computer simulation with the formula demonstrates that there exists an optimal material dispersion for an amplification system,with which we can achieve the largest dispersion-free bandwidth.
THEORY OF WIDE BANDWIDTH OPTICAL HARMONIC GENERATION BASED ON FREQUENCY MIXING
Authors: WANG JIE  , YAO JIAN-QUAN  , YU YI-ZHONG  , WANG PENG  , ZHANG FAN  , WANG TAO  ,   天津大学精仪学院激光与光电子研究所,教育部光电信息科学技术开放实验室,天津300072
Published: December 2020

A new theory of wide bandwidth optical harmonic generation based on frequency mixing is presented.We point out that the wide bandwidth optical harmonic generation is a process of frequency mixing rather than only frequency doubling if there are phase match among different wavelengths.The sum frequency between different wavelengths can play a leading role in wide bandwidth optical harmonic generation,which can increase the acceptance bandwidth dramatically.This theory is not limited by the acceptance bandwidth of frequency doubling and not only suit for second harmonic generation but also for third harmonic generation.
ALGEBRAIC FOUNDATION OF MAXIMAL FINITE GROUP OF 3 DIMENTIONAL CRYATALLOGRAPHY
Authors: YE XIAO-RONG  , CAO YOU-AN  , YANG QI-BIN  ,   (1)湘潭大学数学系,湘潭411105; (2)湘潭大学现代物理研究所,湘潭411105
Published: December 2020

Four arithmetic non-equivalent metric tensor matrices,-have been derived in this paper according to a crystallographic general equation TN=T.T1,T3 and T4 are geometric equivalent ones,therefore,only T1 and T2 are geometric non-equivalent ones.Substituting T1 and T2 into NTN=T,two maximal finite groups can be derived, which have 48 and 24 elements respectively and belong to two crystallographic point groups.The other 30 point groups can be derived according to group-subgroup relationship.
SIMULATION OF A FLOW FIELD WITH NONUNIFORM TEMPERATURE BY USING LATTICE BOLTZMANN EQUATION MODEL
Authors: FENG SHI-DE  , ZHANG QIONG  , REN RONG-CAI  ,   中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室,北京100029
Published: December 2020

A new lattice Boltzmann equation(LBE) model is developed based on the previous LBE model and the conservative criteria of mass, momentum and energy. The result shows that the LBE model is further improved in an external force field. The relation between the buoyancy strength parameter and the Grashof number is obtained through the recovery of dynamic equations. The viscosity transport term is obviously improved by comparing the derived momentum equation with Navier-Stokes equation. It is shown that the viscosity stress not only depends on the velocity gradient and the compressibility of the fluid, but also depends on the gradient of unsteady internal energy and unsteady momentum flux. The flow field with nonuniform temperature has been simulated by using the model. It is shown that the model is valid both in theory and in numerical experiment.
ANALYSIS ON MACROSCOPIC EQUATION TO ONE-DIMENSIONAL RANDOM TRAFFIC FLOW MODELS
Authors: Lü XIAO-YANG  , KONG LING-JIANG  , LIU MU-REN  ,   (1)广西师范大学物理与电子科学系,桂林541004; (2)华南师范大学行政学院,广州510631
Published: December 2020

By introducing a break noise,create and disappear probability,we obtain a wholly stochastic cellular automaton traffic model.Through studying its microscopic evolution rule,we build its macroscopic dynamical equation under the Boltzmann approximation.We analyzed the solution of the equation under special conditions and did some computer simulation experiments.
DIAGNOSTIC OF RF PLASMA BY USING LANGMUIR PROBE AND ITS NUMERICAL PROCESSING
Authors: CHI LING-FEI  , LIN KUI-XUN  , YAO RUO-HE  , LIN XUAN-YING  , YU CHU-YING  , YU YUN-PENG  ,   汕头大学物理系,汕头515063
Published: December 2020

Langmuir probe is an important diagnostic tool for measuring plasma parameters. A tuned single probe has been used to diagnostic the electron energy distribution function in Ar radio frequency (13.56MHz) glow plasma. The second derivative of probe I-V characteristic was obtained after using numerical filter procedure to eliminate the statistical noise in measured I-V characteristic. A differential circuit has been designed and applied to measure the second derivative of I-V characteristic on line under the same discharge conditions. The results of the two methods are in agreement with each other.
MONTE CARLO STUDY ON INTERFACE ROUGHNESS DEPENDENCE OF ELECTRON MOBILITY IN 6H-SiC INVERSION LAYERS
Authors: SHANG YE-CHUN  , ZHANG YI-MEN  , ZHANG YU-MING  ,   西安电子科技大学微电子研究所,西安710071
Published: December 2020

A new interface roughness scattering model is developed using exponential autocovariance functions.The electron mobility in 6H-SiC inversion layers is studied by single-electron Monte Carlo approach that takes into account the size quantization and the main scattering mechanisms in SiC inversion layers.The simulation results show that the electron mobility calculated using the exponential model presented in this paper are in good agreement with the experimental data. Interface roughness scattering is shown to play a strong role in the high effective transverse field.The electron mobility falls as the temperature increases.The roughness scattering under higher effective fields is reduced significantly by screening effects.
OPTICAL PROPERTY OF Tm:YVO4 CRYSTAL
Authors: CHEN XIAO-BO  , HE CHEN-JUAN  , CHEN LUAN  , ZHUANG JIAN  , SONG ZENG-FU  ,   (1)北京大学物理系,北京100875; (2)北京师范大学光学中心,国家教育部射线束技术与材料改性重点实验室,北京100875; (3)北京师范大学光学中心,国家教育部射线束技术与材料改性重点实验室,北京100875,中国科学院物理研究所光物理开放实验室,北京100080; (4)中国科学院福建物质结构研究所,福州350001
Published: December 2020

YVO4 crystal has high laser output slope efficiency and damage threshold,good mechanical property and chemical stability.We have measured the absorption of Tm:YVO4 crystal.The anisotropy effect is taken account.The optical intensity parameters are fitted out.And the oscillator strength f,the radiative transition rate,the integral emission section Σ are calculated.In the wavelength range of 350—2500nm,the absorption of YVO4 crystal itself is rather small.However,Tm3+ ions in the YVO4 crystal have very strong luminescent ability. Especially,the 1D2→3F4 (about 454nm) blue transition has excellent oscillator strength (f=38×10-6) and integral emission section (Σ=33×10-18cm).It is quite benefit to achieve laser lasing in short-wavelength.In brief,the rare earth ion doped YVO4 crystal is a kind of wonderful laser material,which has great applications in future.
SPATIAL DISTRIBUTION OF ELECTRON ENERGY IN THIN FILM ELECTROLUMINESCENT DEVICES
Authors: DENG CHAO-YONG  , ZHAO HUI  , WANG YONG-SHENG  ,   北方交通大学光电子技术研究所,信息存储、显示与材料开放实验室,北京100044
Published: December 2020

We adopted an analytical approach based on fitting of the full band structure of ZnS by polynomials.We studied the electron transport process in phosphor layer of thin-film electroluminescent divices by Monte Carlo Simulation.Two kinds of spatial distributions of electron energy are obtained in phosphor layers of the sandwich structure and the layered optimization structure,and the explanation about it is also given.
INVESTIGATIONS OF TiO2 FILMS PREPARED BY REACTIVE MAGNETRON SPUTTERING
Authors: ZHAO KUN  , ZHU FENG  , WANG LI-FANG  , MENG TIE-JUN  , ZHANG BAO-CHENG  , ZHAO KUI  ,   北京大学重离子研究所,北京100871
Published: December 2020

TiO2 thin films were prepared by reactive magnetron sputtering.The influences of O2 partial pressure,substrate temperature and annealing temperature on the structural properties of the films have been studied.In these films anatase and rutile phases were observed and their respective preferred crystallizing conditions were analyzed.In this paper,the morphological characteristic of TiO2 film was also discussed.
THE RESEARCH ON IMPROVING THE CHARACTERISTICS OF LASER OUTPUT WITH DIFFRACTIVE OPTICAL ELEMENTS
Authors: LU XUAN-HUI  , HUANG KAI-KAI  ,   浙江大学物理系,杭州310028
Published: December 2020

The matrix eigenvalues method is used to analyze the laser cavity in which the traditional spherical mirror is replaced by the phase type diffraction optical elements. The authors analyze the characteristics of the modes under the conditions of different Frenesl number. The results show that this laser cavity can enhance the discrimination between spatial modes effectively and can be used to design the output laser beam.
A NOVEL METHOD TO MEASURE THE THICKNESS OF YBCO THIN FILM
Authors: ZHANG GUO-YONG  , ZHANG PENG-XIANG  ,   昆明理工大学材料科学与工程系,昆明650051
Published: December 2020

The laser induced voltage effect had been found in HTSC YBCO thin film grown on vicinal cut SrTiO3 substrate. The relationship between the decay time constant of response signal and the thickness of YBCO thin film was studied. It was found that the relationship between the decay time constant and the film thickness can be fitted by a fitting curve. The film thickness can be obtained from the fitting. We discussed the error induced to the fitting.
SUPERRESOLUTION BY MICRO-ZOOMING TECHNIQUE
Authors: ZHANG HAI-TAO  , GONG MA-LI  , ZHAO DA-ZUN  , YAN PING  , CUI RUI-ZHEN  , JIA WEI-PU  ,   (1)北京理工大学光电工程系颜色科学与工程国家重点实验室,北京100081; (2)清华大学精密仪器与机械学系,北京100084
Published: December 2020

In opto-electronic imaging systems, aliasing will occur when sampling a scene containing spatial frequencies exceeding one half of the sampling frequency. A novel superresolution technique, micro zooming, is proposed, which can reduce aliasing and improve the resolution of the imaging systems through a series of aliased frames with different optical magnifications. Both computer simulations and experimental results are presented to verify the effectiveness and simplicity of micro-zooming technique for obtaining superresolution.
COMPARATIVE STUDY ON PHOTOLUMINESCENCE FROM Si-CONTAINING SILICON OXIDE FILMS AND Ge-CONTAINING SILICON OXIDE FILMS
Authors: MA SHU-YI  , QIN GUO-GANG  , YOU LI-PING  , WANG YIN-YUE  ,   (1)北京大学物理系,北京100871; (2)兰州大学物理科学与技术学院,兰州730000; (3)西北师范大学物理系,兰州730070
Published: December 2020

Si-containing silicon oxide (SSO) films and Ge-containing silicon oxide (GSO) films were deposited on p-type Si substrates using the RF magnetron sputtering technique with a Si-SiO2 and a Ge-SiO2 composite target, respectively. These films were annealed in a N2 ambient at temperatures from 300 to 1100℃. Using high resolution transmission electron microscopy,nanometer Si particles and nanometer Ge particles were observed in the SSO and GSO films,respectively,after annealing at 900 or 1100℃. All the PL spectra from the two types of films annealed at various temperatures have similar shapes with peak positions around 580nm (～2.1eV). It is indicated that light emission originates from luminescence centers in Si oxide films. The experimental results have been explained reasonably.
CHAOTIC PHENOMENA OF SUPERCONDUCTIVITY
Authors: SHENG PING-XING  ,   上海大学理学院数学系,上海200436
Published: December 2020

One-dimensional steady state and evolutionary Ginzburg-Landau equations for superconductivity is disussed. Instability of constant steady state solutions and the existence of limit sets of infinite-dimensional dynamic system are proved. Using the author's definition of chaos for finite-and infinite-dimensional dynamic systems, we conclude that superconductors governed by G-L equations possess chaotic phenomena. Therefore strange phenomena may occur in conducting. The theoretical results indicate that it is advisable to improve the design of experiments or try to find new structures of superconductors in future research to suppress the chaotic behavior.
TRUNCATED EXPANSION METHOD AND NEW EXACT SOLITON-LIKE SOLUTION OF THE GENERAL VARIABLE COEFFICIENT KdV EQUATION
Authors: ZHANG JIE-FANG  , CHEN FANG-YUE  ,   浙江师范大学非线性物理研究室,金华321004
Published: December 2020

By using of the special truncated expansion, the soliton-like solution of the generalized KdV equation with variable coefficients is obtained. In this method, the form solution is assumed as the truncated expansion form which is based on the idea that the generalized KdV equation with variable coefficients is reduced to a set of algebraic equations of undetermined functions, so that we can obtain a set of ordinary differential equations of undetermined functions which are easily integrated. An example is given to illustrated that this method is very effective in solving soliton-like solution of a large class of variable coefficient nonlinear evolution equations.
BOUND STATES OF KLEIN-GORDON EQUATION AND DIRAC EQUATION FOR SCALAR AND VECTOR P?SCHL-TELLER-TYPE POTENTIALS
Authors: CHEN GANG  ,   绍兴文理学院物理系,绍兴312000
Published: December 2020

The s-wave bound states of Klein-Gordon equation and Dirac equation with scalar and vector P?schl-Teller-type potentials are obtained.
GEOMETRY OF C42+ AND THE JAHN-TELLER EFFECT
Authors: WANG RONG  , ZHU ZHENG-HE  , YANG CHUAN-LU  ,   四川大学原子与分子物理研究所,成都610065
Published: December 2020

stable geometrical configurations of electronic states for C42+ are found with QCISD/6-311G method. These configurations are Cs,C∞v,C2v,D2h,D∞h,D4h,D2d and C3v, etc. The Jahn-Teller distortions from the configurations C42+(Td) and C42+(D4h) exist. The analysis of the relationships among these various geometrical configurations, based on the Jahn-Teller effect, vibronic interaction and the resolution of group representations, is in agreement with the calculated results. The most stable electronic state of C42+ is 3A″ of the planar Cs configuration.
RADIATIVE TRANSITION OF CORE-EXCITED 2smd4De STATES TO THE 2pnd4Do STATES IN LITHIUM
Authors: WANG FEI  , GOU BING-CONG  , HAN LI-HONG  ,   北京理工大学应用物理系,北京100081
Published: December 2020

The saddle-point variational method is used with restricted variation method to obtain the energies of the core-excited states 1s2smd4De(m=3—7) and 1s2pnd4Do(n=3—5) for lithium, including the mass polarization and relativistic corrections. Oscillator strengths, transition rates, lifetimes and wavelengths are also calculated. The results are compared with other theoretical and experiment data in the literature.
RESEARCH ON THE NON-CRITICAL PHASE-MATCHING WAVELENGTH OF GdxY1-xCa4O(BO3)3 CRYSTAL
Authors: WANG ZHENG-PING  , XU XIN-GUANG  , SUN XUN  , FU KUN  , SONG REN-BO  , WANG JI-YANG  , LIU YAO-GANG  , WEI JING-QIAN  , SHAO ZONG-SHU  ,   山东大学晶体材料国家重点实验室,济南250100
Published: December 2020

Using the Sellmeier equations of GdCOB and YCOB, we determined the wavelength range in which non-critical phase matching in GdxY1-xCOB can be realized. Using a 704-5 type optical parametric amplifier, we measured the non-critical phase-matching wavelengths in several GdxY1-xCOB crystals with different compositional parameter x.
OPTIMIZED DESIGN OF A SYSTEM OF GENERATING TERAWATT LASER PULSES BY USE OF OPTICAL PARAMETRIC CHIRPED PULSE AMPLIFICATION
Authors: LIU HONG-JUN  , CHEN GUO-FU  , ZHAO WEI  , WANG YI-SHAN  , ZHAO SHANG-HONG  ,   中国科学院西安光学精密机械研究所瞬态光学技术国家重点实验室,西安710068
Published: December 2020

Using the numerical method, an optimized design is presented for the generation of peak powers up to ～60 TW with pulse duration ～25 fs using an optical parametric chirped pulse amplifier (OPCPA) pumped by the high-power Nd:glass laser. The OPCPA system consists of an LBO preamplifier and an LBO power amplifier. The numerical simulation results demonstrate that this system can scale the pulse energy at nanojoule level to the joule level and generate terawatt pulses. So it provides great po-tential to efficiently produce and amplify very short femtosecond laser pulses, and can be regarded as a step toward generating petawatt laser pulses using optical parametric chirped pulse amplifiers pumped by powerful nanosecond systems.
NANO-Cu/Al2O3 ASSEMBLIES TEMPLATE SYNTHESIS AND OPTICAL ABSORPTION
Authors: WANG YIN-HAI  , MO JI-MEI  , CAI WEI-LI  , XU YAN-QI  ,   (1)中国科学技术大学材料科学与工程系,合肥230026; (2)中国科学技术大学材料科学与工程系,合肥230026;安徽大学物理系,合肥230039
Published: December 2020

Nano-Cu/Al2O3 assemblies were prepared by AC electrochemical deposition of Cu in the ordered pores of alumina membranes. TEM measurement show that the amount of Cu nanoparticls increase with the deposition time. Optical absorption characteristics in the wavelength range 200—800nm has been investigated for the assemblies, and only an absorption band-edge was observed. With the increasing deposition amount of Cu, the absorption band-edge red-shifts. The results are discussed in terms of Rayleigh scattering. Meanwhile the assemblies exhibit the optical features of a semiconductor with indirect band gap.
MONTE-CARLO CALCULATION OF X-RAY DOSE ENHANCEMENT FACTOR NEARBY HIGH Z METAL CONNECTED INTERFACE
Authors: MU WEI-BING  , CHEN PAN-XUN  ,   (1)中国工程物理研究院电子工程研究所,绵阳919信箱522分箱,绵阳621900; (2)中国工程物理研究院西南核物理与化学研究所,绵阳919信箱213分箱,绵阳621900
Published: December 2020

The dose would be enhanced on the low- Z material side when X-ray enters the interface constructed with two different materials.The mechanism of dose enhancement has been discussed and the Dose Enhancement Factors of W-Si,W-SiO2,Ta-Si and Ta-SiO2 interfaces are calculated by the Monte-Carlo method.
QUANTUM PROBLEM OF THREE FERMI IONS WITH COPLANAR CONFIGURATION IN A PAUL TRAP
Authors: HE MING  , DUAN YI-WU  , ZHU XI-WEN  , SHI LEI  ,   (1)湖南师范大学物理系,长沙410081; (2)中国科学院武汉物理与数学研究所,武汉430072
Published: December 2020

We have solved the Shr?dinger equation of three Fermi ions with coplanar configuration in a Paul trap,when the whole spin angular momentum of the system is S=1/2 or 3/2.The structure and quantum dynamics of this system are investigated by inspecting the wave function nodal structure and the shape-density.At the same time,we compare our result with that of three Bose ions system and three ions system in classical condition.
THE DIFFRACTION PROPERTIES FOR THE ONE-DIMENSIONAL FIBONACCI-CLASS QUASILATTICES
Authors: LI CUI-LIAN  , LIU YOU-YAN  ,   华南理工大学物理系,广州510640
Published: December 2020

Using the projection and Fourier transform methods,we have derived the diffraction formulas and discussed the rules of diffraction peaks and systematic absences for the one-dimensional Fibonacci-class quasilattices.Moreover,we have calculated and labeled the positions of the diffraction peaks of FC(1) and FC(3).In order to check our diffraction formulas,we extend the formulas to the FC(n) quasiperiodic superlattices.Comparing the present diffraction results of the FC(1) superlattice with the experimental data,we have found that most of them agree with each other but one of the spectra is not consistent.Particularily,we doubt that the peak (4,2) in the experiment should be a stronger peak.
STUDY ON GOLD NANOCLUSTERS AND GOLD NANOWIRES ON THE SURFACE OF HIGHLY ORIENTED PYROLYTIC GRAPHITE
Authors: HOU SHI-MIN  , TAO CHENG-GANG  , LIU HONG-WEN  , ZHAO XING-YU  , LIU WEI-MIN  , XUE ZENG-QUAN  ,   北京大学电子学系,北京100871
Published: December 2020

We have investigated the growth of gold nanoclusters on the surface of highly oriented pyrolytic graphite in ultrahigh vacuum.Studies by ultrahigh vacuum scanning tunneling microscopy indicated that the size distribution of gold clusters was very narrow and quasi-one-dimensional chains of gold nanoclusters of approximately 2 nm diameter were produced after annealed at 74℃.And gold nanowires made of different sized gold clusters could also be formed after annealed at 122℃.These results suggest the viability of a new route to the creation of ordered nanoscale structures.
INFLUENCE OF ION BOMBARDING ON ADHESION FORCE OF DIAMOND NUCLEI ON Si SUBSTRATE
Authors: WANG BI-BEN  , WANG WAN-LU  , LIAO KE-JUN  , XIAO JIN-LONG  , FANG LIANG  ,   重庆大学理学院应用物理系,重庆400044
Published: December 2020

The enhanced nucleation process of diamond by negative substrate bias was investigated by scanning electron microscopy and atomic force microscopy. The mechanism of enhanced joint adhesion of diamond nuclei on Si substrate by ion bombardment was theoretically approached, and the relationship between negative substrate bias and adhesion of diamond nuclei on Si substrate was given.
TIGHT-BINDING POTENTIAL WITH CORRECTION OF BONDING ENVIRONMENT FOR SILICON-HYDROGEN
Authors: PAN BI-CAI  ,   中国科学技术大学物理系,合肥230026
Published: December 2020

We have developed a new Si-H tight-binding potential through introducing hydrogen atom into the previous silicon tight-binding potential model,in which the correction of environment around a Si-H bond is considered for the interaction between silicon and hydrogen.The testing results show good transferability,hence this new model can be used to do research on complicated silicon-hydrogen systems.
A STUDY ON ENERGY TRANSFER AND ENERGY MIGRATION MODELS FOR RE IONS LUMINESCENCE SYSTEM
Authors: WANG DIAN-YUAN  , XIE PING-BO  , ZHANG WEI-PING  , LOU LI-REN  , XIA SHANG-DA  ,   (1)中国科学技术大学结构分析开放实验室,合肥230026,中国科学技术大学物理系,合肥230026; (2)中国科学技术大学结构分析开放实验室,合肥230026,中国科学院激发态物理开放研究实验室,长春130021,中国科学技术大学物理系,合肥230026; (3)中国科学技术大学物理系,合肥230026
Published: December 2020

By Application of the V-F-B model which is obtained by combining the Vasquez-Flint (V-F) model for donor-acceptor energy transfer and the model of Burshtein for donor-donor energy migration, the experimental luminescence decay curves of 4S3/2 state of Er3+ in LaF3 at 295K for four different concentrations are re-simulated successfully.It is found that in this system the donor-acceptor interaction is dipole-dipole interaction,and that the donor-acceptor interaction constant CDA is 4.75×10-41cm6/s. The results are all in agreement with the previous results of Okamoto. However, the hopping time τ0 obtained from the above simulation in proportional to xD-1.237 (xD is the donor concentration), which is different from the theoretical dependence on the donor concentration (that is τ0∝xD-2). In addition, by considering donor-acceptor energy transfer and donor-donor energy migration within the V-F model at the same time, we obtain the estimated values of the hopping time τ0′ for four different concentrations, which are in reasonable agreement with the values of τ0 obtained from the above simulation.It seems that the V-F-B model is rather self-consistent.
BASIC THEORY OF RELATIVISTIC BIRKHOFFIAN DYNAMICS OF ROTATIONAL SYSTEM
Authors: LUO SHAO-KAI  , FU JING-LI  , CHEN XIANG-WEI  ,   商丘师范学院数学力学与数学物理研究所,商丘476000
Published: December 2020

The basic theory of relativistic Birkhoffian dynamics of rotational system is constructed,and the Birkhoffian,Birkhoff's functions,Pfaff action,Pfaff-Birkhoff principle,Pfaff-Birkhoff-D'Alembert principle and Birkhoffian equations are given.The relations among relativistic Lagrangian mechanics,Hamiltonian mechanics and relativistic Birkhoffian dynamics of rotational system are studied.It is proved that the holonomic conserved and holonomic non-conserved rotational relativistic systems can all belong to the rotational relativistic Birkhoffian system.
AN IMPROVED ONE-DIMENSIONAL CELLULAR AUTOMATON MODEL OF TRAFFIC FLOW AND THE EFFECT OF DECELERATION PROBABILITY
Authors: XUE YU  , DONG LI-YUN  , DAI SHI-QIANG  ,   (1)上海大学上海市应用数学与力学研究所,上海200072; (2)上海大学上海市应用数学与力学研究所,上海200072,广西大学物理系,南宁530003
Published: December 2020

Based upon the single-lane traffic cellular automaton (CA) model introduced by Negel and Schreckenberg, an improved single-lane traffic CA model has been proposed by the consideration of the relative motion of vehicles and the relation of deceleration probability with the density. Numerical simulations have been carried out.The results show the complicated evolution process of traffic flow.The flow of vehicles can be controlled by the definition of the relation between deceleration probability and the exponet v of density pnoise～ρv.Different values of v have different effect on the critical point from free phase to jam phase.The simulation agrees with the measurement as v is about 0.75.With the increase of vehicles and the evolution process of traffic flow,the free and jam phases will become unsteady and appear alternatively, similiar to the propagation of wave.
MEASUREMENT OF ISOTOPE SHIFTS AMONG 142—146,148,150Nd+ BY USING COLLINEAR FAST-ION-BEAM LASER SPECTROSCOPY
Authors: MA HONG-LIANG  , TANG JIA-YONG  ,   (1)复旦大学现代物理研究所,上海200433; (2)上海大学物理系,上海200436
Published: December 2020

In atomic spectroscopy, the subject of isotope shifts is one of the few problems that links atomic and nuclear physics. The isotope shifts among all the seven stable isotopes in Nd Ⅱ were measured by means of collinear fast-ion-beam laser spectroscopy.Compared with the data that have been published,our experimental accuracy is improved by one order of magnitude and some of the results are obtained for the first time, as far as we know.
TRUE RANDOM NUMBER GENERATOR BASED ON A PHOTON BEAMSPLITTER
Authors: LIAO JING  , LIANG CHUANG  , WEI YA-JUN  , WU LING-AN  , PAN SHAO-HUA  , YAO DE-CHENG  ,   (1)中国科学技术大学研究生院,北京100039; (2)中国科学院物理研究所光物理开放实验室,北京100080
Published: December 2020

A quantum optical true random number generator based on splitting a beam of photons at a 50/50 beamsplitter has been demonstrated. A continuous stream of random numbers at a rate of 200 kbit/s can be generated. A mathematical method (Huffman coding and data compressing) is used to improve the ratio of 0 and 1 bits in the original random number arrays.
SLOW BRAGG SOLITONS IN A PERIODIC STRUCTURE WITH KERR NONLINEARITY
Authors: LI SONG-MAO  , WANG QI  , WU ZHONG  , WEI QING  ,   上海大学理学院,上海200436
Published: December 2020

On the basis of coupled-mode theory we find a class of solitary solutions for the electromagnetic wave propagating in an infinite one-dimensional periodic structure with an intensity-dependent refractive index. We show that the amplitude of the solitary wave is dependent of the incident frequency and the pulse width. In the Bragg resonance limit, the solitary wave can be simplified to a soliton-like solution which was named as “gap soliton” or “slow Bragg soliton”.
MAGNETIC AND TRANSPORT PROPERTIES IN THE DOUBLE PEROVSKITE Sr2CrWO6
Authors: WANG JIN-HUI  , ZHU HAO  , HAN HONG-MEI  , NI GANG  , ZHONG WEI  , DU YOU-WEI  ,   南京大学物理系,南京210093
Published: December 2020

We have carried out preliminary investigations about the magnetic and transport properties of the double perovskite Sr2CrWO6. The polycrystalline sample was fabricated using solid-state reactions in an Ar atmosphere and evacuated silica capsules. The X-ray diffraction studies show that the sample is composed of Sr2CrWO6 and a small amount of impurity SrWO4. The Curie temperature, determined by the thermal magnetization measurements, is around 480 K. The electric resistivity increases with the drop of temperature and exhibits insulator behavior. A large intergrain magnetoresistance (MR) up to 20% at a low temperature (25 K) and a field of 5 T is observed. And the MR decreases to zero with increasing temperature toward 300 K. The large coercive force (5.97×104 A/m) and the low-field deviation of MR from high-field linear behavior indicate that there probably exists a large magnetic anisotropy in the compound.
AGGREGATION CHARACTERISTICS OF GOLD ATOMS DEPOSITED ON MOLTEN GLASS SURFACES
Authors: JIN JIN-SHENG  , YE GAO-XIANG  , QIAN CHANG-JI  , ZHAI GUO-QING  , YE QUAN-LIN  , JIAO ZHENG-KUAN  ,   (1)温州大学物理教研组,温州325027; (2)浙江大学物理系,杭州310028
Published: December 2020

The diffusion,aggregation and crystallization characteristics of gold atoms deposited on molten glass surfaces are studied.Experimental results indicate that the gold atoms first form a characteristic web-shaped Au film on the colloid glass surface,and the average diameter of the crystal grains in the film is about 20 nm.The area of the meshes gradually increases and then the whole film tatters.Thus the compact clusters are formed.The saturated diameter of the compact clusters is about 1.2μm and its diffusion coefficient D is of the order of 107—108cm2/s.The compact clusters diffuse on the molten glass surface quickly and quasi-randomly,and finally large ramified aggregates with diameter of about 50 μm from.
NUMERICAL SIMULATIONS FOR DIRECTED POLYMERS IN 1+1 AND 2+1 DIMENSIONS
Authors: WANG XIAO-HONG  ,   中国科学技术大学热科学和能源工程系,合肥230026
Published: December 2020

Numerical Simulations for directed polymers in 1+1 and 2+1 dimensions show that the transverse fluctuations and free energy fluctuations tend to the strong coupling limit: Δx∝tν,ΔF∝tω (ν=2/3,ω=1/3 for d=1+1; ν≈0.6, ω≈0.2 for d=2+1) at any finite temperature as their behaviors at zero temperature for the long length t of polymer. At finite temperatures, as a result of that the specific heat in both 1+1 dimensions and 2+1 dimensions scales as t and the entropy fluctuations in 1+1 dimensions scale as t1/2 , the ensemble energy fluctuations in both 1+1 and 2+1 dimensions and the internal energy fluctuations in 1+1 dimensions are more pronounced than the free energy fluctuations and scale as t1/2. There is an indication of a phase transition in 2+1 dimensions. It is plausible that the entropy fluctuations and the internal fluctuations per unit length polymers for t→∞ will become zero value at high temperatures from nonzero values at low temperatures at some temperature T=TC where the entropy fluctuation reaches maximum.
SURROGATE DATA TEST FOR THE LINEAR NON-GAUSSIAN TIME SERIES WITH NON-MINIMUM PHASE
Authors: LIU YAO-ZONG  , WEN XI-SEN  , HU NIAO-QING  ,   国防科技大学机电工程与自动化学院,长沙410073
Published: December 2020

Surrogate data testing is a popular method to detect nonlinearity and chaos in time series and has been vastly used in many applications with erratic time series. The explicit null hypothesis often used is that the time series is generated from a linear, stochastic, Gaussian stationary process, including a possible invertible nonlinear static observation function. It is pointed out that the rejection of such a hypothesis may not only result from an underlying nonlinear or even chaotic system, but also from, e.g., a linear, stochastic, non-Gaussian and non-minimum phase sequence. We investigate the power of the test against non-minimum phase sequence.
POSSIBILITY OF ALL OPTICALLY-COOLED AND TRAPPED 133Cs ATOMIC BEC
Authors: YIN JIAN-PING  , GAO WEI-JIAN  , LIU NAN-CHUN  , WANG YI-QIU  ,   (1)北京大学电子学系,北京100871; (2)苏州大学物理系,苏州215006
Published: December 2020

The experimental progress on rf evaporative cooling of 133Cs atomic sample in recent year is reviewed, and the difficulty of magnetically trapped 133Cs atomic Bose-Einstein condensation (BEC) is analyzed. In this paper, we propose an all-optically-cooled and-trapped 133Cs BEC scheme, which is composed of a pyramidal-hollow-beam gravito-optical trap (PHB GOT) from a diode laser (λ=0.852 μm) and a conical-hollow-beam (CHB) GOT from an Ar+ laser (λ=0.5013 μm). In the PHB GOT, the cold atoms experience an efficient hollow-beam induced Sisyphus cooling (i.e., intensity gradient cooling) and repumpimg-beam induced geometric cooling, and they will be cooled to a few photon-recoil limits (～2 μK) from MOT's temperature (～60 μK). Whereas in the Ar+ hollow-laser-beam trap, cold atoms will be further cooled by Raman cooling (or velocity-selection coherent population trapping) and compressed by a blue-detuned covering beam. We have performed Monte-Carlo simulations for PHB cooling process, calculated the optical potential for 133Cs atoms in Ar+ hollow laser beam, and estimated total collision loss and atomic density. Our study shows that the realization of an optically-cooled and-trapped BEC of 133Cs atoms may be possible in our all-optical dipole trap.
STUDY OF THE ELECTRON THERMAL CONDUCTIVITY OF THE OHMICALLY HEATED DISCHARGES IN THE HT-7 TOKAMAK
Authors: ZHANG XIAN-MEI  , WAN BAO-NIAN  , RUAN HUAI-LIN  , WU ZHEN-WEI  ,   中国科学院等离子体物理研究所,合肥230031
Published: December 2020

The electron thermal conductivity in the HT-7 tokamak is obtained by analyzing the electron power balance. In the HT-7 device, the electron thermal convection loss can be neglected, compared with ohmic input power, and the thermal conduction loss is the main energy loss mechanism. The electron thermal diffusion coefficient increases with the minor radius, and is about 100 times larger than the neo-classical theory calculation. After siliconization, the electron thermal diffusion coefficient decreases obviously at the outer half region, and the energy confinement time is prolonged.