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Z箍缩负载初始化电流通道的形成建立过程、电流密度分布模式及其演化特征对研究等离子体动力学发展、分析等离子体不稳定性模式、开展磁流体数值模拟工作等具有重要意义。平面薄膜是研究这一问题中具有连续二维结构的理想构型。基于理想无限长平板假设下的反场薄膜-回流柱负载模型,通过理论对电感主导模式下的电流通道建立和演化过程、薄膜平面磁场分布特征和薄膜各部分受力特征进行了计算分析。通过开展对称型与非对称型下的平面...
通过仿真和实验相结合的手段, 以直流脉冲电压驱动的双环电极结构He大气压等离子体射流为例, 研究了电压上升沿时间对管内放电等离子体发展演化特性的影响. 随着电压上升沿的改变, 管内介质阻挡放电(dielectric barrier discharge, DBD)区出现空心和实心两种放电模式. 上升沿为纳秒和亚微秒量级时, 以空心模式发展, 上升沿持续增加后转变为实心模式. 放电模式本质上受鞘层厚度...
本文利用流体模型对气压为266 Pa的氧气环境下空心阴极放电的放电特性及不同粒子的生成损耗机制进行了模拟研究. 模型中包含11种粒子和48个反应. 在该模拟条件下, 周围阴极所对应的负辉区产生重叠, 表明放电中存在较强的空心阴极效应. 计算得到了不同带电粒子与活性粒子的密度分布. 带电粒子密度主要位于放电单元中心区域, 电子和负氧离子O–是放电体系中主要的负电荷, 其密度峰值分别达到5.0 × 1...
A recent successful observation of a dense and deeply bound \bar{K} nuclear system, K^-pp, in the p + p \rightarrow K^+ + K^-pp reaction in a DISTO experiment indicates that the double-\bar{K} dibaryo...
It was recently shown by Teaney and Yan that fluctuations in the initial geometry of a heavy ion collision generally result in a dipole asymmetry of the distribution of outgoing particles.
Collective excitations of N = 1 supersymmetric electromagnetic plasma are studied. Since the Keldysh-Schwinger approach is used, not only equilibrium but also non-equilibrium plasma, which is assumed...
We present a string theory construction of a gravity dual of a spatially modulated phase. In our earlier work, we showed that the Chern-Simons term in the 5-dimensional Maxwell theory destabilizes t...
Preliminary experiments have been performed to investigate the effects of radiative cooling on plasma jets. Thin (3 um - 5 um) conical shells were irradiated with an intense laser, driving jets with ...
We report on a measurement of the characteristic temperature of an ultracold rubidium ion source, in which a cloud of laser-cooled atoms is converted to ions by photo-ionization. Extracted ion pulses...
We analytically calculate the transverse energy fluxes that would be respectively induced in high-power Airy beams by the Kerr self-focusing and the Airy profile itself if they were the only active p...
We fabricate superconducting ion traps with niobium and niobium nitride and trap single 88Sr ions at cryogenic temperatures. The superconducting transition is verified and characterized by measuring t...
The effect of a classical gravitational field on the spin entanglement of a system of two spin-1/2 particles moving in the curved spacetime is discussed. The system is described by a two-particle Gaus...
Non-Markovian processes can often be turned Markovian by enlarging the set of variables. Here we show, by an explicit construction, how this can be done for the dynamics of a Brownian particle obeying...
In this comment we show that the avian compass entanglement considerations of J. Cai, G. G. Guerreschi and H. J. Briegel (Phys. Rev. Lett. 104, 220502 (2010)) result in unphysical predictions on the m...
We calculate analytically the probabilities for intuitive and counterintuitive transitions in a three-state system, in which two parallel energies are crossed by a third, tilted energy. The state with...

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