A5042951813- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Cosmology and Gravitation Theories
- Adaptive optics and wavefront sensing
- Laser-Matter Interactions and Applications
- Nuclear physics research studies
- Quantum Electrodynamics and Casimir Effect
- Black Holes and Theoretical Physics
- Characterization and Applications of Magnetic Nanoparticles
- Pulsars and Gravitational Waves Research
- Seismology and Earthquake Studies
- Microwave Engineering and Waveguides
- Advanced optical system design
- Fluid Dynamics and Turbulent Flows
- Pulsed Power Technology Applications
- Gamma-ray bursts and supernovae
- Medical Imaging Techniques and Applications
- Industrial Automation and Control Systems
- Optical Coatings and Gratings
- Photonic Crystals and Applications
- Environmental and Agricultural Sciences
Central China Normal University
2023-2024
Peking University
2021-2024
University of Science and Technology of China
2019-2024
Tsinghua University
2006-2023
Northeastern University
2004-2021
Institute of Physics
2021
Chinese Academy of Sciences
2021
University of Chinese Academy of Sciences
2021
Sun Yat-sen University
2019
Shanghai University
2019
Probing the $\ensuremath{\alpha}$ cluster of $^{16}\mathrm{O}$ with relativistic $^{16}\mathrm{O}+^{16}\mathrm{O}$ collisions has raised great interest in heavy ion community. However, effects on soft hadron observables vary largely among different studies. In this paper, we explain differences by compactness oxygen, using iEBE-VISHNU hydrodynamic simulations initial state configurations. We also find several observables, such as intensive skewness $[{p}_{\mathrm{T}}]$ correlator...
In this paper, the Hawking-Page phase transitions between black holes and thermal anti-de Sitter (AdS) space are studied with Gauss-Bonnet term in extended space, which varying cosmological constant plays role of an effective thermodynamic pressure. The exhibits its effects via introducing corrections to hole entropy Gibbs free energy. global structures, especially transition temperature $T_{\rm HP}$ energy $G$, systematically investigated, first for Schwarzschild-AdS then charged rotating...
We demonstrated a nonlinear temporal filter based on the self-diffraction (SD) process. Temporal contrast enhancement, angular dispersion and spectrum broadening properties of SD process are investigated in experiment simulation. Driven by spectral phase well compensated laser pulses with bandwidth 28 nm, produced clean higher than 10 excellent spatial profile, which was smoothed broadened to 64 nm. After implementing this into home-made 30 TW Ti:sapphire amplifier, amplified enhanced within...
In this paper, a pedestal looseness fault model of rotor‐bearing‐seal system is established. Under two working conditions the same direction eccentricity (Working Condition 1) and reverse 2), rotor orbits, vibration waveforms, spectrum cascade, Poincaré maps are used to study dynamic characteristics when sliding bearing support loosened. The influence speed, unbalance discs, clearance, mass on analyzed. found that Working 2 more likely cause support. Moreover, for in occur near second‐order...
The E-802 spectrometer at the Brookhaven Alternating Gradient Synchrotron, enhanced by a trigger for selection of events with one or more specified particles, has been used to measure momentum-space correlation between pairs ${\mathit{K}}^{+}$'s emitted in central Si+Au collisions 14.6 A GeV/c. This projected onto Lorentz-invariant relative four-momentum axis. Fits this function yield size kaon source that is comparable found using ${\mathrm{\ensuremath{\pi}}}^{+}$ from similar rapidity...
A theoretical model for calculation of the high frequency characteristics sine waveguide slow-wave structure (SWS) is proposed. The formulas dispersion and interaction impedances hybrid modes are obtained by combining Helmholtz equation with appropriate boundary conditions. Using full wave analysis method, it proved that periodic structures a half-period shift followed leads to pairwise closing passbands characteristic adjacent mode. SWS 0.22THz traveling tube (TWT) chosen as an illustrative...
Production of the φ meson in central Si+Au collisions has been measured by E859 at Brookhaven Alternating Gradient Synchrotron selecting events with identified K+K− pairs. The mass and width φ, obtained from invariant distribution kaon pairs, are consistent those free mesons. transverse rapidity distributions presented. inverse slope parameter for an exponential fit to is 179±10±17MeV.Received 13 October 1995DOI:https://doi.org/10.1103/PhysRevLett.76.2021©1996 American Physical Society
In this paper, a rectangular magnetic fluid deformable mirror (MFDM) with dual-layer actuators is proposed, which designed to improve the correction performance for full-order aberrations. Compared conventional adaptive optics system that uses two mirrors configure as woofer–tweeter system, proposed MFDM combines into one by using two-layer layout design of actuators. Firstly, based on governing equations fluid, derived from principles conservation mass and field, dynamics model surface...
为了提高系统特征提取算法的计算效率、减少占用的存储空间和简化程序设计，该文基于Riemann 流形上优化算法的几何框架，提出了改进的Stiefel 流形上的梯度下降算法。根据不同要求采用不同的测地线计算公式，并使用多项式逼近测地线方程，同时采用了秦九韶-Horner 多项式算法及线搜索、变步长的方法。以主分量分析问题为例，详细讨论了Stiefel 流形上的梯度算法在其中的应用。理论分析和实验结果均表明，此方法可以在确保迭代矩阵列向量单位正交性的同时获得更好的计算效率和收敛速度，并且更容易实现。
We report measurements of proton emission at target rapidities for minimum bias and central collisions $14.6A\mathrm{GeV}/c$ ${}^{28}\mathrm{Si}$ with Al, Cu, Au nuclei as well $11.7A\mathrm{GeV}/c$ ${}^{197}\mathrm{Au}$ nuclei. Results deuteron are also reported the $\mathrm{S}\mathrm{i}+\mathrm{A}\mathrm{u}$ reaction. The spectra span laboratory angular range $50\ifmmode^\circ\else\textdegree\fi{}<~\ensuremath{\theta}<~130\ifmmode^\circ\else\textdegree\fi{}$ kinetic energy...
<sec> With the development of laser technology, application scope nondiffracting beams, such as Bessel Mathieu cosine and parabolic which remain invariant along their propagation, continues to expand. During its main lobes these beams tend bend towards off-axis position, is called self-accelerating (or self-bending) property. A Bessel-like beam with self-acceleration can realize propagation lobe a curved trajectory while maintaining non-diffraction. Because above property, have been...
Magnetic fluid is a stable colloidal suspension of nano-sized, single-domain ferri/ferromagnetic particles dispersed in liquid carrier. The can be magnetized by the ferromagnetic aligned with external magnetic field, which used as wavefront corrector to correct large aberrations up more than 100 µm adaptive optics (AO) systems. Since measuring range sensor normally small, application deformable mirror (MFDM) limited WFS based AO system. In this paper, on MFDM model and relationship between...
The density, temperature and length of the plasma used in backward Raman amplification will all influence result. To explore density pump intensity, this work uses one-dimensional particle cell (PIC) algorithm to simulate process 800 nm laser injecting into plasma. By analyzing scattered light, it is found that as increases, wavelengths light shorten. It also forward scattering cause change, which turn influences wavelength. Therefore, we should choose based on wavelength while related intensity.
First measurements of single particle spectra π±, K+ and p in 197Au + Au collisions at Ekine = 4 GeV per nucleon are presented. Utilizing the A data set from Forward Spectrometer AGS-E866 experiment, transverse mass distributions rapidity density near mid-rapidity region extracted. Preliminary results compared with those microscopic cascade model calculation, RQMD.