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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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    Realization of an optimized cylindrical uniform magnetic field coil via flexible printed circuit technology

    赵阿慧张永乐梁跃跃张艺...
    271-278页
    查看更多>>摘要：The design and fabrication method of magnetic field coils with high uniformity is essential for atomic magnetometers.In this paper,a novel design strategy for cylindrical uniform coils is first proposed,which combines the target-field method(TFM)with an optimized slime mold algorithm(SMA)to determine optimal structure parameters.Then,the realization method for the designed cylindrical coil by using the flexible printed circuit(FPC)technology is presented.Compared with traditional fabrication methods,this method has advantages in excellent flexibility and bending property,making the coils easier to be arranged in limited space.Moreover,the manufacturing process of the FPC technology via a specific cylindrical uniform magnetic field coil is discussed in detail,and the successfully realized coil is well tested in a verification system.By comparing the uniformity performance of the experimental coil with the simulation one,the effectiveness of the FPC technology in producing cylindrical coils has been well validated.
      原文链接:
    • 万方数据
    • 维普

    Electron correlation in two-electron atoms:A Bohmian analysis of high-order harmonic generation in high-frequency domain

    宋阳韩姝杨玉军郭福明...
    279-288页
    查看更多>>摘要：In studying interactions between intense laser fields and atoms or molecules,the role of electron correlation effects on the dynamical response is an important and pressing issue to address.Utilizing Bohmian mechanics(BM),we have theoret-ically explored the two-electron correlation characteristics while generating high-order harmonics in xenon atoms subjected to intense laser fields.We initially employed Bohmian trajectories to reproduce the dynamics of the electrons and subse-quently utilized time-frequency analysis spectra to ascertain the emission time windows for high-order harmonics.Within these time windows,we classified the nuclear region Bohmian trajectories and observed that intense high-order harmonics are solely generated when paired Bohmian particles(BPs)concurrently appear in the nuclear region and reside there for a duration within a re-collision time window.Furthermore,our analysis of characteristic trajectories producing high-order harmonics led us to propose a two-electron re-collision model to elucidate this phenomenon.The study demonstrates that intense high-order harmonics are only generated when both electrons are in the ground state within the re-collision time window.This work discusses the implications of correlation effects between two electrons and offers valuable insights for studying correlation in multi-electron high-order harmonic generation.
      原文链接:
    • 万方数据
    • 维普

    Momentum distributions of symmetric(H2+)and asymmetric(HeH2+)molecular ions in a circularly polarized laser field under different ionization mechanisms

    郝欣宇闫淑娟郭颖郭静...
    289-295页
    查看更多>>摘要：By numerically solving the two-dimensional(2D)time-dependent Schrödinger equation(TDSE),we present photo-electron momentum distributions(PMDs)and photoelectron angular distributions(PADs)of symmetric(H2+)and asymmet-ric(HeH2+)molecular ions in circularly polarized(CP)laser pulses.By adjusting the laser wavelength,two circumstances of resonance excitation and direct ionization were considered.The ionization mechanism of the resonance excitation was mainly investigated.The results show that the PMDs of H2+and HeH2+in the y-direction gradually increase with increas-ing intensity,and the number of PMDs lobes is in good agreement with the results predicted by the ultrafast ionization model.In the resonance excitation scenario,the PMDs of H+are dominated by two-photon ionization,whereas the PMDs of HeH2+are dominated by three-photon ionization.Furthermore,the PMDs of HeH2+are stronger in the resonance ex-citation scenario than those of H+,which can be explained by the time-dependent population of electrons.In addition,the molecular structure is clearly imprinted onto the PMDs.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Determining the tilt of the Raman laser beam using an optical method for atom gravimeters

    骆华清徐耀耀崔嘉丰邓小兵...
    296-301页
    查看更多>>摘要：The tilt of a Raman laser beam is a major systematic error in precision gravity measurement using atom interferome-try.The conventional approach to evaluating this tilt error involves modulating the direction of the Raman laser beam and conducting time-consuming gravity measurements to identify the error minimum.In this work,we demonstrate a method to expediently determine the tilt of the Raman laser beam by transforming the tilt angle measurement into characteriza-tion of parallelism,which integrates the optical method of aligning the laser direction,commonly used in freely falling corner-cube gravimeters,into an atom gravimeter.A position-sensing detector(PSD)is utilized to quantitatively charac-terize the parallelism between the test beam and the reference beam,thus measuring the tilt precisely and rapidly.After carefully positioning the PSD and calibrating the relationship between the distance measured by the PSD and the tilt angle measured by the tiltmeter,we achieved a statistical uncertainty of less than 30 μrad in the tilt measurement.Furthermore,we compared the results obtained through this optical method with those from the conventional tilt modulation method for gravity measurement.The comparison validates that our optical method can achieve tilt determination with an accuracy level of better than 200 μrad,corresponding to a systematic error of 20 μGal in g measurement.This work has practical implications for real-world applications of atom gravimeters.
      原文链接:
    • 万方数据
    • 维普

    Optical image watermarking based on orbital angular momentum holography

    朱家龙季佳滢王乐赵生妹...
    302-311页
    查看更多>>摘要：We propose an optical image watermarking scheme based on orbital angular momentum(OAM)holography.Multiple topological charges(TCs,l)of OAM,as multiple cryptographic sub-keys,are embedded into the host image along with the watermark information.Moreover,the Arnold transformation is employed to further enhance the security and the scrambling time(m)is also served as another cryptographic key.The watermark image is embedded into the host image by using the discrete wavelet transformation(DWT)and singular value decomposition(SVD)methods.Importantly,the interference image is utilized to further enhance security.The imperceptibility of our proposed method is analyzed by using the peak signal-to-noise ratio(PSNR)and the histogram of the watermarked host image.To demonstrate robustness,a series of attack tests,including Gaussian noise,Poisson noise,salt-and-pepper noise,JPEG compression,Gaussian low-pass filtering,cropping,and rotation,are conducted.The experimental results show that our proposed method has advanced security,imperceptibility,and robustness,making it a promising option for optical image watermarking applications.
      原文链接:
    • 万方数据
    • 维普

    Bright soliton dynamics for resonant nonlinear Schr?dinger equation with generalized cubic-quintic nonlinearity

    鲍柯宇唐晓刚王颖
    312-323页
    查看更多>>摘要：For systems modeled by the resonant nonlinear Schrödinger equation(RNLSE)with generalized cubic-quintic non-linearity,we derive the bright soliton solution of the equation in(1+1)dimensions,using the modified F-expansion method along with the novel ansatz of F-base function.Furthermore,we extend the analytical study of soliton dynamics to higher(2+1)and(3+1)dimensions by using the self-similar method,and demonstrate the soliton behavior via graphical illustra-tion.Moreover,we investigate the effect of the resonance term on bright soliton solution in(1+1)dimensions.Additionally,we consider the nonlinear equation models with perturbation terms and derive the bright soliton solutions for the one-dimensional(1D)to three-dimensional(3D)cases.The theoretical results derived can be used to guide the experimental studies and observations of bright solitons in systems described by RNLSE model.
      原文链接:
    • 万方数据
    • 维普

    Analysis and measurement of vibration characteristics of a hollowing defect based on a laser self-mixing interferometer

    陈煜昕陈金波曹鹏赵有光...
    324-335页
    查看更多>>摘要：To solve the problems with the existing methods for detecting hollowing defects,such as inconvenient operation,low efficiency and intense subjectivity,and to improve the efficiency of the acoustic-optic fusion method for detecting hollowing defects,in this paper the vibration characteristics of hollowing defects are measured and analyzed using a laser self-mixing interferometer.The ceramic tile above the hollowing defect is equivalent to a thin circular plate with peripheral fixed support.According to Kirchhoff's classical circular plate theory and the circular plate displacement function based on the improved Fourier series,a theoretical model of a circular plate is established.By solving the characteristic equation,the theoretical modal parameters of hollowing defects are obtained.Subsequently,an experimental system based on a laser self-mixing interferometer is built,and modal experiments are carried out using the hammering method.The experimental modal parameters are obtained with a professional modal analysis software.Through comparative analysis between the theoretical and experimental modal parameters,the error of the natural frequency results is found to be tiny and the mode shapes are consistent.These results provide theoretical guidance for a practical non-destructive acoustic-optic fusion method for detecting hollowing defects.
      原文链接:
    • 万方数据
    • 维普

    Capture behavior of self-propelled particles into a hexatic ordering obstacle

    李静怡石金蕾王英英潘俊星...
    336-342页
    查看更多>>摘要：Computer simulations are utilized to investigate the dynamic behavior of self-propelled particles(SPPs)within a com-plex obstacle environment.The findings reveal that SPPs exhibit three distinct aggregation states within the obstacle,each contingent on specific conditions.A phase diagram outlining the aggregation states concerning self-propulsion conditions is presented.The results illustrate a transition of SPPs from a dispersion state to a transition state as persistence time in-creases within the obstacle.Conversely,as the driving strength increases,self-propelled particles shift towards a cluster state.A systematic exploration of the interplay between driving strength,persistence time,and matching degree on the dynamic behavior of self-propelled particles is conducted.Furthermore,an analysis is performed on the spatial distribution of SPPs along the y-axis,capture rate,maximum capture probability,and mean-square displacement.The insights gained from this research make valuable contributions to understanding the capture and collection of active particles.
      原文链接:
    • 万方数据
    • 维普

    Flow features induced by a rod-shaped microswimmer and its swimming efficiency:A two-dimensional numerical study

    李斯文应宇翔姜童晓聂德明...
    343-355页
    查看更多>>摘要：The swimming performance of rod-shaped microswimmers in a channel was numerically investigated using the two-dimensional lattice Boltzmann method(LBM).We considered variable-length squirmer rods,assembled from circular squirmer models with self-propulsion mechanisms,and analyzed the effects of the Reynolds number(Re),aspect ratio(ε),squirmer-type factor(β)and blockage ratio(κ)on swimming efficiency(η)and power expenditure(P).The results show no significant difference in power expenditure between pushers(microswimmers propelled from the tail)and pullers(microswimmers propelled from the head)at the low Reynolds numbers adopted in this study.However,the swimming efficiency of pushers surpasses that of pullers.Moreover,as the degree of channel blockage increases(i.e.,κ increases),the squirmer rod consumes more energy while swimming,and its swimming efficiency also increases,which is clearly reflected when ε ≤ 3.Notably,squirmer rods with a larger aspect ratio ε and a β value approaching O can achieve high swimming efficiency with lower power expenditure.The advantages of self-propelled microswimmers are manifested when ε＞4 and β=±1,where the squirmer rod consumes less energy than a passive rod driven by an external field.These findings underscore the potential for designing more efficient microswimmers by carefully considering the interactions between the microswimmer geometry,propulsion mechanism and fluid dynamic environment.
      原文链接:
    • 万方数据
    • 维普

    Shear rheology of confined double rings of dust particles in a dusty plasma

    田淼李佳琪于雪波刘雪...
    356-362页
    查看更多>>摘要：Shear rheology is a fundamental property of soft matter,which can be deformed.Although the shear rheology of fluids has been well studied at the macroscopic scale,understanding the microscopic processes of rheology at the single-particle level remains a challenging issue.Dusty plasma serves as an ideal platform for exploring microscopic dynamics of system at the individual particle level.Here,we study the shear rheology of confined double rings of strongly coupled dust particles in a dusty plasma.The outer ring is actively driven to rotate using laser illumination.Depending on the particle number,the inner ring may passively rotate following the outer ring at different angular speeds,resulting in shear rheology.The number of dust particles influences particle arrangement,which is characterized by the pair correlation function,bond-orientational order parameter,and triangle skewness.That further alters structural stability,significantly affecting the shear rheology.
      原文链接:
    • 万方数据
    • 维普