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Progress in Natural Science:Materials International 2002年第2期 80-82页

作者： LIU Jun and XU Xiaoping(institute of physics, Chinese Academy of Sciences, Beijing 100080, China) institute of physics Chinese Academy of Sciences Beijing 100080 China

In line with the rapid development of research on high-temperature superconductors, the establishment of a National Laboratory for Superconductivity in the institute of physics, the Chinese Academy of Sciences (CAS) was ratified by the State Commission of Development & Planning (SCDP) in 1987. The preparations were started in 1988, and in April of 1991,

关键词： Ph A brief introduction to National Laboratory for Superconductivity Chinese Academy of Sciences

ON THE BINDING ENERGIES OF THE NUCLEI ~6Li AND ~7Li PART Ⅱ NUMERICAL CALCULATION FOR ~6Li(Contributions from institute of Modern physics, Academia Sinica,No.4)

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中国物理学报 1950年第2期 462-474页

作者： YEH LUNG-FEYinstitute of Modern physics, Academia Sinica

By using the formulae obtained in Part Ⅰ for the calculation of the binding energy of ~6Li,anumerical estimate is made here-the variational function being chosen rather *** resultsare in favour of the two-range nuclear potential considered previously,and indeed indicate a largerratio of the two ranges,the ratio being not smaller than three.

关键词： Li AND Academia Sinica,No.4 NUMERICAL CALCULATION FOR ON THE BINDING ENERGIES OF THE NUCLEI PART

ON THE BINDING ENERGIES OF THE NUCLEI ~6Li AND ~7Li PART Ⅰ.GENERAL FORMULATION(Contributions from institute of Modern physics,Academia Sinica,No.3)

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中国物理学报 1950年第2期 445-453页

作者： KING SING-NANinstitute of Modern physics, Academia Sinica

By using the nuclear potential obtained by Peng and Chang as a working hypotnesis,we haveobtained the general formulae for computing the binding energies of ~6Li and ~7Li,the wave functionsbeing approximated by those ... 详细信息

关键词： Li ON THE BINDING ENERGIES OF THE NUCLEI PART AND Contributions from institute of Modern physics,Academia Sinica,No.3 GENERAL FORMULATION

A MULTIGRID METHOD FOR NONLINEAR PARABOLIC PROBLEMS

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Journal of Computational Mathematics 1996年第4期14卷 363-382页

作者： x.J. Yu(Laborutory of Computational physics, institute of Applied physics and ComputationalMathematics, Beijing, China) Laboratory of Computational physics Institute of Applied Physics and Computational Mathematics Beijing China

The multigrid algorithm in [13] is developed for solving nonlinear parabolic equations arising from the finite element discretization. The computational cost of the algorithm is approximate O(NkN) where N-k is the dim... 详细信息

关键词： Th Math A MULTIGRID METHOD FOR NONLINEAR PARABOLIC PROBLEMS UC

Large-eddy simulations of the Richtmyer-Meshkov instability of rectangular interfaces accelerated by shock waves

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Science China(physics,Mechanics & Astronomy) 2010年第12期53卷 905-914页

作者： WANG Tao,BAI JingSong,LI Ping & LIU Kun institute of Fluid physics,China Academy of Engineering physics,Mianyang 621900,China institute of Fluid physics China Academy of Engineering Physics Mianyang China

A parallel algorithm and code MVFT(multi-viscous-fluid and turbulence) of large-eddy simulation(LES) is developed from our MVPPM(multi-viscous-fluid piecewise parabolic method),and performed to solve the multi compressible Navier-Stokes(N-S) *** effect of the unresolved subgrid-scale(SGS) motions on the large scales is represented by different SGS stress models in LES.A Richtmyer-Meshkov instability experiment of the evolution of a rectangular block of SF6,which occupies half of the height of the shock tube test section,following the interaction with a planar shock wave,is numerically and exhaustively simulated by this *** comparison between experimental and simulated images of the evolving SF6 block shows that they are *** numerical simulations reproduce the complex developing process of SF6 block,which grows *** geometric quantities that characterize the extents of SF6 block are also compared in detail between numerical simulations and experiment with good agreements between them,a quantitative demonstration of the developing law of SF6 *** is an evident discrepancy between the three numerical simulations for the maximum position of the right edge of block at the late stage,because the right interface grows complicated and the dissipation is different for different SGS *** SGS turbulent dissipation,molecular viscosity dissipation and SGS turbulent kinetic energy have been studied and *** have a similar distribution to the large eddy *** SGS turbulent dissipation is much greater than the molecular viscosity dissipation;the SGS turbulent dissipation of Vreman model is smaller than the Smagorinsky *** general,the simulated results of Vreman SGS model are better compared with the dynamic viscosity and Smagorinsky SGS *** vorticity and circulation deposition on the block interface have also been investigated.

关键词： large-eddy simulation Navier-Stokes equations subgrid-scale Richtmyer-Meshkov instability turbulent dissipation turbulent kinetic energy circulation deposition

A high power MOPA free-electron laser with narrowline-width

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Nuclear Science and Techniques 1999年第3期10卷 165-167页

作者： SHU Xiaojian (institute of Modern physics, Fudan University, Shanghai 200433 institute of Applied physics and Computational Mathematics, Beijing 100088) 复旦大学物理系上海

A new kind of MOPA configuration to obtain a high power free-electron laser with very narrow line-width that can satisfy the requirements of some applications such as the laser isotope separation has been proposed, wh... 详细信息

关键词：自由电子激光器线宽窄功率大

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Editorial

Science China(physics,Mechanics & Astronomy) 2009年第1期52卷 2-3页

作者： XIE Sishen,institute of physics,Chinese Acedemy of Sciences institute of physics Chinese Acedemy of Sciences Beijing China

Nanoscience and nanotechnology have a history of nearly a decade-long intensive *** National Nanotechnology initiation of USA (in the year 2000),many important progresses have been

关键词： Editorial

Transient Behavior of Negative Hydrogen Ion Extraction from Plasma

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Plasma Science and Technology 2013年第9期15卷 945-949页

作者：蓝朝晖institute of Fluid physics China Academy of Engineering physics 彭宇飞杨振龙继东 institute of Fluid physics China Academy of Engineering Physics

For plasma source, the extraction of negative ions is quite different from that of positive ions. To understand the effect of extraction field on plasma, the time-dependent behavior of negative hydrogen ion extraction from a negative ion source has been studied by particle-in-cell simulation in the collisionless limit. The simulations have shown that, due to the difference in dynamics between electrons and ions, the imbalance of the numbers of charged particles occurs in the source, results in the broadening of plasma sheath and the great increase of plasma potential. The resultant high sheath field and the ambipolar electric field in plasma make the negatively charged particles congregate inside the sheath and move toward the extraction outlet. The emission area of negative ions is much smaller than that of the extraction aperture, which is in sharp contrast to the case of positive ion extraction.

关键词： negative hydrogen ion particle-in-cell simulation ion source ion extraction

FINITE DIFFERENCE METHOD WITH NONUNIFORM MESHES FOR QUASILINEAR PARABOLIC SYSTEMS

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Journal of Computational Mathematics 1997年第4期15卷 289-310页

作者： Yu-lin Zhou (Labomtory of Computational physics, Center of Nonlinear Studies, institute of Applied physics and Computational Mathematics, Beijing, China) 北京应用物理和计算数学所北京

The analysis of the finite difference schemes with nonuniform meshes for the problems of partial differential equations is extremely rare even for very simple problems and even for the method of fully heuristic character. In the present work the boundary value problem for quasilinear parabolic system is solved by the finite difference method with nonuniform meshes. By using of the interpolation formulas for the spaces of discrete functions with unequal meshsteps and the method of a priori estimation for the discrete solutions of finite difference schemes with nonuniform meshes, the absolute and relative convergence of the discrete solutions of the finite defference scheme are proved. The limiting vector function is just the unique generalized solution of the original problem for the parabolic system.

关键词： Boundary value problems Convergence of numerical methods Estimation Heuristic methods Interpolation Partial differential equations

Anomalous Hall effect in perpendicular CoFeB thin films

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Chinese physics B 2014年第4期23卷 9-17页

作者：朱涛 institute of physics and Beijing National Laboratory for Condensed Matter physics Chinese Academy of Sciences

Our recent research achievements in the perpendicular magnetic anisotropy （PMA） properties of the CoFeB sand- wiched by MgO and tantalum layers are summarized. We found that the PMA behaviors of Ta/CoFeB/MgO and MgO/CoFeB/Ta thin films are different. The larger PMA in the latter film is related to the lower magnetization of CoFeB deposited on MgO. Furthermore, we have demonstrated a large anomalous Hall effect in perpendicular CoFeB thin fihn. Our results show large anomalous Hall resistivity, large longitudinal resistivity, and low switching field can be achieved, all at the same time, in the perpendicular CoFeB thin film. Anomalous Hall effect with high and linear sensitivity is also found in an MgO/CoFeBFFa thin film with a thick MgO layer, which opens a door tbr future device applications of perpendicular ferromagnetic thin films.

关键词： anomalous Hall effect perpendicular magnetic anisotropy magnetic properties of interfaces