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Nonintrusive measurements of plasma properties are essential to evaluate, and numerically simulate, the in-flight performance of electric propulsion systems. As a logical first step in the development of new diagnostic techniques, this work…

等离子体物理 · 物理学 2023-04-05 Adam R. Patel , Sashin L. B. Karunarathne , Nicholas Babusis , Alexey Shashurin

The cascaded production and dynamics of electron-positron plasma in ultimately focused laser fields of extreme intensity are studied by 3D particle-in-cell simulations with the account for the relevant processes of quantum electrodynamics…

Formation of near-cathode plasma at the instant of breakdown of the air gap was studied by the methods of picosecond laser probing. It was demonstrated that 1-2 ns after a sharp rise of the current through the discharge gap dense plasma…

One of the fundamental problems is the understanding of physics of electrostatic and electromagnetic fluctuations in multi-scale plasma turbulence. Especially so, in continuously connected plasma regions with varying degree of…

等离子体物理 · 物理学 2018-05-09 A. D. Patel , M. Sharma , N. Ramasubramanian , R. Ganesh , P. K. Chattopadhyay

In order to improve the quality of thin film deposition by magnetron discharges, particularly by an effective ionization of the sputtered vapor, we developed an ionized physical vapor deposition method based on pre-ionized pulsed magnetron…

等离子体物理 · 物理学 2019-06-25 Mihai Ganciu

We conducted experimental studies and computer simulations of standing striations in capacitive coupled plasma in Argon gas. Standing striations were observed at frequencies 3.6, 8.4 and 19.0 MHz, in a pressure range 0.05-10 Torr, tube…

计算物理 · 物理学 2020-06-24 Vladimir I Kolobov , Robert R Arslanbekov , Dmitry Levko , Valery A Godyak

We present an analytical model for electron self-injection in nonlinear, multidimensional plasma wave excited by short laser pulse in the bubble regime or by short electron beam in the blowout regime. In this regimes, which are typical for…

等离子体物理 · 物理学 2010-05-25 I. Kostyukov , E. Nerush , A. Pukhov , V. Seredov

We report on the experimental observation of three dimensional self-deformation in an atmospheric micro discharge of the helium microjet through a tube into the ambient air upon a water electrode. The geometry of the discharge system is…

等离子体物理 · 物理学 2016-01-11 Shaofeng Xu , Xiaoxia Zhong

The magnetized induced Compton scattering off the particles of the ultrarelativistic electron-positron plasma of pulsar is considered. The main attention is paid to the transverse regime of the scattering, which holds in a moderately strong…

天体物理学 · 物理学 2009-11-13 S. A. Petrova

The swimming of cells, far from any boundary, can arise in the absence of long-range liquid-crystalline order within the cytoplasm, but simple models of this effect are lacking. Here we present a two-dimensional model of droplet…

软凝聚态物质 · 物理学 2020-07-29 Rajesh Singh , Elsen Tjhung , Michael E. Cates

In this work, we present an experimental study of nanosecond high-voltage discharges in a pin-to-pin electrode configuration at atmospheric conditions operating in single-pulse mode (no memory effects). Various discharge parameters,…

等离子体物理 · 物理学 2021-09-29 Xingxing Wang , Adam Patel , Sally Bane , Alexey Shashurin

We report on the observation of the self-excited dust density waves in the dc discharge complex plasma. The experiments were performed under microgravity conditions in the Plasmakristall-4 facility on board the International Space Station.…

Bubble-driven inertial pumps are a novel method of moving liquids through microchannels. We combine high-speed imaging, computational fluid dynamics (CFD) simulations and an effective one-dimensional model to study the fundamentals of…

流体动力学 · 物理学 2016-05-17 A. N. Govyadinov , P. E. Kornilovitch , D. P. Markel , E. D. Torniainen

Particle dynamics are investigated in plasma turbulence, using self-consistent kinetic simulations, in two dimensions. In steady state, the trajectories of single protons and proton-pairs are studied, at different values of plasma "beta"…

等离子体物理 · 物理学 2016-08-31 S. Servidio , C. T. Haynes , W. H. Matthaeus , D. Burgess , V. Carbone , P. Veltri

A novel regime of self-compression is proposed for plasma-based backward Raman amplification(BRA) upon flying focus. By using a pumping focus moving with a speed equal to the group velocity of stimulated Raman backscattering(SRBS), only a…

We present a detailed quantitative description of the recently proposed "slingshot effect" [Fiore, Fedele, De angelis 2014]. Namely, we determine a broad range of conditions under which the impact of a very short and intense laser pulse…

等离子体物理 · 物理学 2016-09-01 Gaetano Fiore , Sergio De Nicola

In this paper, the discharge structure of an Ar and SF inductively coupled plasma at the low pressure is investigated by mean of a fluid simulation at the quasi cold ion approximation with the room temperature magnitude.

等离子体物理 · 物理学 2025-09-08 Rui-Ji Tang , Shu-Xia Zhao , Yu Tian

Experimental results show that hosing of a long particle bunch in plasma can be induced by wakefields driven by a short, misaligned preceding bunch. Hosing develops in the plane of misalignment, self-modulation in the perpendicular plane,…

等离子体物理 · 物理学 2024-01-08 T. Nechaeva , L. Verra , J. Pucek , L. Ranc , M. Bergamaschi , G. Zevi Della Porta , P. Muggli

In this paper we analyze the problem of glow discharge in low pressure plasma in industrial plant, for chambers of different shapes and various working parameters, like pressure and electric potential. The model described is based upon a…

等离子体物理 · 物理学 2015-03-17 Alessandro Speranza , Luigi Barletti , Luca Meacci , Stefano Fanfani , Iacopo Borsi , Alessandro Monti

We discovered a hysteresis in a microwave-driven low-pressure argon plasma during gas pressure change across the transition region between $\alpha$ and $\gamma$ discharge modes. The hysteresis is manifested in that the critical pressure of…

等离子体物理 · 物理学 2022-10-26 Kyungtae Kim , Woojin Nam , Jimo Lee , Seungbo Shim , Gunsu S. Yun