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中国物理B(英文版)
中国物理B(英文版)

欧阳钟灿

月刊

1674-1056

010-82649026 82649519

100080

北京603信箱

中国物理B(英文版)/Journal Chinese Physics BCSCDCSTPCD北大核心EISCI
查看更多>>该刊与《物理学报》是中国物理学会主办的物理学英文和中文的综合性国际学术月刊。刊登物理学科领域中,国内外未曾公开发表的具有创新性的科学研究最新成果。内容包括物理学各领域的理论、实验技术及应用。两刊内容不重复。两刊以论文水平高、创新性强,发表速度快的特点,受到国内外物理学工作者的好评和关注。被国际著名的SCI等10种以上检索系统收录。曾多次被评为中国科学院优秀期刊一等奖,1999,2003,2005年荣获第一、第二和第三届国家期刊奖,2001年被国家新闻出版总署评为“中国期刊方阵”中的双高(高知名度、高学术水平)期刊。2001,2002,2003年两刊都评为百种中国杰出期刊。
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    An underdamped and delayed tri-stable model-based stochastic resonance

    靳艳飞王昊天张婷婷
    308-315页
    查看更多>>摘要:Stochastic resonance(SR)is investigated in an underdamped tri-stable potential system driven by Gaussian colored noise and a periodic excitation,where both displacement and velocity time-delayed states feedback are considered.It is challenging to study SR in a second-order delayed multi-stable system analytically.In this paper,the improved energy envelope stochastic average method is developed to derive the analytical expressions of stationary probability density(SPD)and spectral amplification.The effects of noise intensity,damping coefficient,and time delay on SR are analyzed.The results show that the shapes of joint SPD can be adjusted to the desired structure by choosing the time delay and feedback gains.For fixed time delay,the SR peak is increased for negative displacement or velocity feedback gain.Meanwhile,the SR peak is decreased while the optimal noise intensity increases with increasing correlation time of noise.The Monte Carlo simulations(MCS)confirm the effectiveness of the theoretical results.

    Enhancing visual security:An image encryption scheme based on parallel compressive sensing and edge detection embedding

    王一铭黄树锋陈煌杨健...
    316-332页
    查看更多>>摘要:A novel image encryption scheme based on parallel compressive sensing and edge detection embedding technology is proposed to improve visual security.Firstly,the plain image is sparsely represented using the discrete wavelet transform.Then,the coefficient matrix is scrambled and compressed to obtain a size-reduced image using the Fisher-Yates shuffle and parallel compressive sensing.Subsequently,to increase the security of the proposed algorithm,the compressed image is re-encrypted through permutation and diffusion to obtain a noise-like secret image.Finally,an adaptive embedding method based on edge detection for different carrier images is proposed to generate a visually meaningful cipher image.To improve the plaintext sensitivity of the algorithm,the counter mode is combined with the hash function to generate keys for chaotic systems.Additionally,an effective permutation method is designed to scramble the pixels of the compressed image in the re-encryption stage.The simulation results and analyses demonstrate that the proposed algorithm performs well in terms of visual security and decryption quality.

    Characteristic analysis of 5D symmetric Hamiltonian conservative hyperchaotic system with hidden multiple stability

    黄丽莲马衍昊李创
    333-346页
    查看更多>>摘要:Conservative chaotic systems have unique advantages over dissipative chaotic systems in the fields of secure commu-nication and pseudo-random number generator because they do not have attractors but possess good traversal and pseudo-randomness.In this work,a novel five-dimensional(5D)Hamiltonian conservative hyperchaotic system is proposed based on the 5D Euler equation.The proposed system can have different types of coordinate transformations and time reversal symmetries.In this work,Hamilton energy and Casimir energy are analyzed firstly,and it is proved that the new system satisfies Hamilton energy conservation and can generate chaos.Then,the complex dynamic characteristics of the system are demonstrated and the conservatism and chaos characteristics of the system are verified through the correlation analy-sis methods such as phase diagram,equilibrium point,Lyapunov exponent,bifurcation diagram,and SE complexity.In addition,a detailed analysis of the multistable characteristics of the system reveals that many energy-related coexisting orbits exist.Based on the infinite number of center-type and saddle-type equilibrium points,the dynamic characteristics of the hidden multistability of the system are revealed.Then,the National Institute of Standards and Technology(NIST)test of the new system shows that the chaotic sequence generated by the system has strong pseudo-random.Finally,the circuit simulation and hardware circuit experiment of the system are carried out with Multisim simulation software and digital signal processor(DSP)respectively.The experimental results confirm that the new system has good ergodicity and realizability.

    Static-to-kinematic modeling and experimental validation of tendon-driven quasi continuum manipulators with nonconstant subsegment stiffness

    郑先杰丁萌刘辽雪王璐...
    347-358页
    查看更多>>摘要:Continuum robots with high flexibility and compliance have the capability to operate in confined and cluttered envi-ronments.To enhance the load capacity while maintaining robot dexterity,we propose a novel non-constant subsegment stiffness structure for tendon-driven quasi continuum robots(TDQCRs)comprising rigid-flexible coupling subsegments.Aiming at real-time control applications,we present a novel static-to-kinematic modeling approach to gain a comprehen-sive understanding of the TDQCR model.The analytical subsegment-based kinematics for the multisection manipulator is derived based on screw theory and product of exponentials formula,and the static model considering gravity loading,actuation loading,and robot constitutive laws is established.Additionally,the effect of tension attenuation caused by rout-ing channel friction is considered in the robot statics,resulting in improved model accuracy.The root-mean-square error between the outputs of the static model and the experimental system is less than 1.63%of the arm length(0.5 m).By em-ploying the proposed static model,a mapping of bending angles between the configuration space and the subsegment space is established.Furthermore,motion control experiments are conducted on our TDQCR system,and the results demonstrate the effectiveness of the static-to-kinematic model.

    Ab initio potential energy surface and anharmonic vibration spectrum of NF3+

    陈艳南徐建刚范江鹏马双雄...
    359-366页
    查看更多>>摘要:Potential energy surfaces(PESs),vibrational frequencies,and infrared spectra are calculated for NF3+using ab initio calculations,based on UCCSD(T)/cc-pVTZ combined with vibrational configuration interaction(VCI).Based on an itera-tive algorithm,the surfaces(SURF)program adds automatic points to the lattice representation of the potential function,the one-dimensional and two-dimensional PESs are calculated after reaching a convergence threshold,finally the smooth image of the potential energy surface is fitted.The PESs accurately account for the interaction between the different modes,with the mode q6 symmetrical stretching vibrations having the greatest effect on the potential energy change of the whole system throughout the potential energy surface shift.The anharmonic frequencies are obtained when the VCI matrix is diagonal-ized.Fundamental frequencies,overtones,and combination bands of NF3+are calculated,which generate the degenerate phenomenon between their frequencies.Finally,the calculated anharmonic frequency is used to plot the infrared spectra.Modal antisymmetric stretching v5 and symmetric stretching v6 exhibit a phenomenon of large-intensity borrowing.This study can provide data to support the characterization in the laboratory.

    High-order harmonic generation of ZnO crystals in chirped and static electric fields

    张玲玉何永林谢卓璇高芳艳...
    367-376页
    查看更多>>摘要:High harmonic generation in ZnO crystals under chirped single-color field and static electric field are investigated by solving the semiconductor Bloch equation(SBE).It is found that when the chirp pulse is introduced,the interference structure becomes obvious while the harmonic cutoff is not extended.Furthermore,the harmonic efficiency is improved when the static electric field is included.These phenomena are demonstrated by the classical recollision model in real space affected by the waveform of laser field and inversion symmetry.Specifically,the electron motion in k-space shows that the change of waveform and the destruction of the symmetry of the laser field lead to the incomplete X-structure of the crystal-momentum-resolved(k-resolved)inter-band harmonic spectrum.Furthermore,a pre-acceleration process in the solid four-step model is confirmed.

    Collision off-axis position dependence of relativistic nonlinear Thomson inverse scattering of an excited electron in a tightly focused circular polarized laser pulse

    王禹博杨青屿常一凡林宗熠...
    377-388页
    查看更多>>摘要:This paper presents a novel view of the impact of electron collision off-axis positions on the dynamic properties and relativistic nonlinear Thomson inverse scattering of excited electrons within tightly focused,circularly polarized laser pulses of varying intensities.We examine the effects of the transverse ponderomotive force,specifically how the deviation angle and speed of electron motion are affected by the initial off-axis position of the electron and the peak amplitude of the laser pulse.When the laser pulse intensity is low,an increase in the electron's initial off-axis distance results in reduced spatial radiation power,improved collimation,super-continuum phenomena generation,red-shifting of the spectrum's harmonic peak,and significant symmetry in the radiation radial direction.However,in contradiction to conventional understandings,when the laser pulse intensity is relatively high,the properties of the relativistic nonlinear Thomson inverse scattering of the electron deviate from the central axis,changing direction in opposition to the aforementioned effects.After reaching a peak,these properties then shift again,aligning with the previous direction.The complex interplay of these effects suggests a greater nuance and intricacy in the relationship between laser pulse intensity,electron position,and scattering properties than previously thought.

    Internal collision double ionization of molecules driven by co-rotating two-color circularly polarized laser pulses

    李雪峰乔月吴丹蔚瑞贤...
    389-396页
    查看更多>>摘要:The double ionization process of molecules driven by co-rotating two-color circularly polarized fields is investigated with a three-dimensional classical ensemble model.Numerical results indicate that a considerable part of the sequential double ionization(DI)events of molecules occur through internal collision double ionization(ICD),and the ICD recollision mechanism is significantly different from that in non-sequential double ionization(NSDI).By analyzing the results of internuclear distances R=5 a.u.and 2 a.u.,these two recollision mechanisms are studied in depth.It is found that the dynamic behaviors of the recollision mechanisms of NSDI and ICD are similar.For NSDI,the motion range of electrons after the ionization is relatively large,and the electrons will return to the core after a period of time.In the ICD process,electrons will rotate around the parent ion before ionization,and the distance of the electron motion is relatively small.After a period of time,the electrons will come back to the core and collide with another electron.Furthermore,the molecular internuclear distance has a significant effect on the electron dynamic behavior of the two ionization mechanisms.This study will help to understand the multi-electron ionization process of complex systems.

    Electron vortices generation of photoelectron of H2+ by counter-rotating circularly polarized attosecond pulses

    杨浩婧刘晓煜朱风筝焦利光...
    397-403页
    查看更多>>摘要:Molecular-frame photoelectron momentum distributions(MF-PMDs)of an H2+molecule ion in the presence of a pair of counter-rotating circularly polarized attosecond extreme ultraviolet laser pulses is studied by numerically solving the two-dimensional time-dependent Schrödinger equation within the frozen-nuclei approximation.At small time delay,our simulations show that the electron vortex structure is sensitive to the time delay and relative phase between the counter-rotating pulses when they are partially overlapped.By adjusting time delay and relative phase,we have the ability to manipulate the MF-PMDs and the appearance of spiral arms.We further show that the internuclear distance can affect the spiral vortices due to its different transition cross sections in the parallel and perpendicular geometries.The lowest-order perturbation theory is employed to interpret these phenomena qualitatively.It is concluded that the internuclear distance-dependent transition cross sections and the confinement effect in diatomic molecules are responsible for the variation of vortex structures in the MF-PMDs.

    Electric field and force characteristic of dust aerosol particles on the surface of high-voltage transmission line

    刘滢格李兴财王娟马鑫...
    404-415页
    查看更多>>摘要:High-voltage transmission lines play a crucial role in facilitating the utilization of renewable energy in regions prone to desertification.The accumulation of atmospheric particles on the surface of these lines can significantly impact corona discharge and wind-induced conductor displacement.Accurately quantifying the force exerted by particles adhering to conductor surfaces is essential for evaluating fouling conditions and making informed decisions.Therefore,this study investigates the changes in electric field intensity along branched conductors caused by various fouling layers and their resulting influence on the adhesion of dust particles.The findings indicate that as individual particle size increases,the field strength at the top of the particle gradually decreases and eventually stabilizes at approximately 49.22 kV/cm,which corresponds to a field strength approximately 1.96 times higher than that of an unpolluted transmission line.Furthermore,when particle spacing exceeds 15 times the particle size,the field strength around the transmission line gradually decreases and approaches the level observed on non-adhering surface.The electric field remains relatively stable.In a triangular arrangement of three particles,the maximum field strength at the tip of the fouling layer is approximately 1.44 times higher than that of double particles and 1.5 times higher compared to single particles.These results suggest that particles adhering to the transmission line have a greater affinity for adsorbing charged particles.Additionally,relevant numerical calculations demonstrate that in dry environments,the primary adhesion forces between particles and transmission lines follow an order of electrostatic force and van der Waals force.Specifically,at the minimum field strength,these forces are approximately 74.73 times and 19.43 times stronger than the gravitational force acting on the particles.