反常输运与非线性自持磁岛的自洽分析

从沿磁力线的等离子体电流与粒子径向输运相关的新经典ＭＨＤ型的广义欧姆定律出发，提出了分析反常输运与非线性自持磁岛的自洽理论模型，基于该模型导出了反常扩散系数及反常电子热导。结果表明，非线性磁岛链可由磁岛调制的反常输动维持，反过来又通过磁岛短路效应维持反常输运。     

格点规范理论的Adler-Bell-Jackiw反常

本文讨论了格点费米子规范体系的反常问题. 在弱耦合近似下, 利用路径积分方法, 计算了Wilson模型反常项的连续极限表达式, 所得结果与Kasten和Smit得到的结果一致, 就是连续理论的Adler-Bell-Jackiw反常.     

反常电子粘滞性与锯齿崩塌

本文研究了反常电子热导产生的反常横向电子粘带性的对居齿振荡现象的影响，得出了新的锯齿崩塌时间，解释了大托卡马克上的快崩塌过程。对于不同的反常输运模型，得到了不同的崩塌时间对电子温度的依赖关系，说明了反常粘滞性高温下起着主要的作用。根据崩塌时间估算出的反常热导对的定标关系与耗散漂移波理论的结论基本相同。     

剖面不变性与托卡马克放电中的

从通常的局部输运模型的角度分析,托卡马克等离子体中有相当多的输运现象会被视为“奇怪”的或“反常”的,即难于被正确的理解,也难于给出统一的描述方式。基于温度剖面不变性的－－这里称炎这相容模型的描述方法,在不涉及非局部输运任何具体物理机制的情况下,给出了包含非局部效应的热导系数及其与局部反常热导系数的关系。利用这种相容热导模型统一地描述并分析了一些看似奇怪或反常的输运现象。     

动力学阿尔芬波湍流下自洽的反常α粒子扩散模拟

本文用阿尔芬波湍流理论预言的反常α粒子扩散模型，结合快α粒子慢化、扩散的多能群求解方法，进行了反常α粒子扩散的输运模拟，得到了饱和情形下快α粒子密度ｎａ及反常扩散系数Ｄ＾ａｎａ的自洽空间分布，并讨论了结果。     

有限反常核

从一个相对论性核模型解得了有限反常核,并找到了两个临界质量数A₁=85和A₂=165,只当质量数A≥A₁时才存在束缚的反常核,当A≥A₂时反常核的第核子结合能大于正常核.当A>3310时反常核由于库伦能而变得非束缚.     

缪轻子反常磁矩和北京谱仪实验

最新的缪子反常磁矩实验测量结果与标准模型理论预言偏离4.2σ,提供了新物理存在的重要证据。然而要确认新物理的存在,实验和理论还需要进一步提高精度。运行在量子色动力学微扰与非微扰过渡能区的北京谱仪实验能够约束缪子反常磁矩理论计算中最重要的误差来源——强相互作用的修正。文章介绍了缪子反常磁矩的实验与理论现状,特别是北京谱仪实验上相关的研究成果,并展望了未来缪子反常磁矩的实验测量与理论计算。     

1p壳层核的α折合宽度

利用谐振子壳模型波函数,计算了1p壳层核的α折合宽度。计算结果发现,正常宇称能级的理论值与实验值大致相符,反常宇称能级的理论值则比实验值小得多。这表明至少对于反常宇称能级,通常的单量子激发壳模型波函数还不能正确反映原子核的结团现象,它们与原子核真实状态的差别还是很大的。     

左手材料中圆偏振光束的反常旋转特性研究

根据Whittaker标量势理论,建立了圆偏振光束的矢量传输模型.基于这一模型研究了圆偏振光束在左手材料中的反常旋转特性.通过分析光束偏振态、衍射对强度质心旋转特性的影响,发现圆偏振光束在左手材料中旋转方向反转并揭示其旋转角等于古伊相.采用分析横向能流的方法,揭示左手材料中反向的横向能流是导致反常旋转特性的主要原因.对圆偏振光束在左手材料中反常旋转特性的研究,有利于增强对左手材料中光束传输特性的认识. 关键词： 左手材料 圆偏振光束 旋转特性     

纳米颗粒在复杂生物介质中的反常扩散

由于生物微环境中存在各向异性等复杂物理因素影响,纳米颗粒在其中的扩散运动表现出反常的特征.反常扩散与生物微环境的功能实现有重要的关联,同时也是流体力学在微纳尺度方向的重要扩展.该综述系统介绍了近年来反常扩散研究的进展,从物理模型、数值模拟、测量方法及实验现象等方面揭示了纳米颗粒在复杂生物介质中的反常扩散机理及特征.该问题在微纳尺度流体力学、生物物理等领域是研究的热点,在理论上和实验时仍有重大挑战,有待进一步深入研究.      

铁镍钴矩磁合金的铁心损耗

本文研究了经过纵向磁退火的铁镍钴合金带的铁心损耗,发现P/f-f曲线具有明显的反常行为。用180°畴壁移的反常涡流损耗理论模型做了解释。并提出一些减小损耗的可能途径。     

On mean square displacement behaviors of anomalous diffusions with variable and random orders

Mean square displacement (MSD) is used to characterize anomalous diffusion. Recently, models of anomalous diffusion with variable-order and random-order were proposed, but no MSD analysis has been given so far. The purpose of this Letter is to offer a concise derivation of MSD functions for the variable-order model and the random-order model. Numerical results are presented to illustrate the analytical results. In addition, we show how to establish a variable-random-order model for a given MSD function which has clear application potentials.     

Temperature dependence of elastic moduli of submicrocrystalline copper

The possibility of applying the two-component model of single-phase hybrid materials to the explanation of the anomalous temperature dependence of elastic moduli of copper with a submicrocrystalline structure has been discussed. An analysis has been performed based on new experimental data. A twin mechanism of changes in the crystallite orientation has been proposed. These changes cause the anomalous behavior of the elastic moduli of copper during deformation and subsequent heatings.     

亚稳中间相的电导和其反常超导相变的机理

我们系统地测得了在低温凝聚InSb膜亚稳中间相的不同结构下其σ(T_a)与温度T的关系,发现相应于某些特定σ(T_a)的相变区,样品超导转变的R(T)曲线出现奇异的反常现象。本文提出一个类半导体相和亚稳金属相的混合态模型来解释这些现象,并且按此模型做了理论计算,理论曲线和实验数值较好地符合。 关键词：     

Interchange-turbulence-based radial transport model for SOLPS-ITER: A COMPASS case study

Mean-field plasma edge transport codes such as SOLPS-ITER heavily rely on ad-hoc radial diffusion coefficients to approximately model anomalous transport. Such coefficients are experimentally determined and vary between different machines, and also depend on the operational regime and plasma location within the same device. Therefore, to match experimental data the modeller is required to manually tune several free parameters in expensive simulations, and the code's predictive capabilities are significantly downgraded. As a solution, a new model has been developed for SOLPS-ITER, solving an additional transport equation for the turbulent kinetic energy k, derived by consistently time-averaging the Braginskii equations, and including a diffusive closure for the anomalous particle flux. This closure model relates the anomalous diffusion coefficient to the local k value. The resulting equation structure and its closure are inspired by TOKAM2D isothermal interchange turbulence simulation results. Within this model, fewer and hopefully more universal free parameters are retained, thus improving the code's predictive capabilities. The new model has been tested on a COMPASS case for which upstream plasma profiles were available. Experimental data and a reference solution, obtained by matching the profiles through manual tuning of radial diffusivities, have been used to estimate the parameters of our new transport model. A ballooned particle diffusivity profile is retrieved by the new radial transport model, thanks to the proposed interchange drive. The obtained upstream profiles qualitatively agree with the experiment and prove the new model is a promising first attempt to be further refined.     

Slow relaxation,confinement, and solitons

Millisecond crystal relaxation has been used to explain anomalous decay in doped alkali halides. We attribute this slowness to Fermi-Pasta-Ulam solitons. Our model exhibits confinement of mechanical energy released by excitation. Extending the model to long times is justified by its relation to solitons, excitations previously proposed to occur in alkali halides. Soliton damping and observation are also discussed.     

Intensity Correlation,Relaxat ion Time,Intensity Fluctuation and First-Order-Like Transition of Dye Laser

Statistical properties of dye laser are studied by using the colored gain-noise model which has been presented recently. We calculate the intensity correlation function and relaxation time driven by colored pump noise and white spon taneous-emission noise simultaneously. Intensity fluctuation and first-order-like transition are analyzed too in this paper. It is found that the colored gain-noise model can describe well the anomalous statistical properties of dye laser.     

Anomalous roughening of Hele-Shaw flows with quenched disorder

The kinetic roughening of a stable oil-air interface moving in a Hele-Shaw cell that contains a quenched columnar disorder (tracks) has been studied. A capillary effect is responsible for the dynamic evolution of the resulting rough interface, which exhibits anomalous scaling. The three independent exponents needed to characterize the anomalous scaling are determined experimentally. The anomalous scaling is explained in terms of the initial acceleration and subsequent deceleration of the interface tips in the tracks coupled by mass conservation. A phenomenological model that reproduces the measured global and local exponents is introduced.     

Temperature-Abnormal Diffusivity in underdamped spatially periodic systems

A theoretical model of temperature-anomalous diffusion has been developed on the basis of computer calculation results. It has been shown that the behavior of diffusion in underdamped spatially periodic systems is anomalous in a certain force range: the diffusivity increases unlimitedly with a decrease in the temperature. Analytical expressions have been found for the width and position of this range depending on the friction coefficient and other parameters of the system. Scaling dependences of the diffusivity and mobility of particles on the friction coefficient have been obtained.