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We study the Rayleigh-Taylor instability (RTI) at a prominence-corona transition region in a non-linear regime. Our aim is to understand how the presence of neutral atoms in the prominence plasma influences the instability growth rate, and…

太阳与恒星天体物理 · 物理学 2014-05-08 E. Khomenko , A. Diaz , A. de Vicente , M. Collados , M. Luna

Rayleigh-Taylor (RT) instability occurs in a variety of scenario as a consequence of fluids of different densities pushing against the density gradient. For example, it is expected to occur in the ion acceleration of solid density targets…

等离子体物理 · 物理学 2024-09-24 Z. Liu , M. K. Zhao , P. L. Bai , X. J. Yang , R. Qi , Y. Xu , J. W. Wang , Y. X. Leng , J. H. Bin , R. X. Li

The design of inertial confinement fusion (ICF) ignition targets requires radiation-hydrodynamics simulations with accurate models of the fundamental material properties (i.e., equation of state, opacity, and conductivity). Validation of…

等离子体物理 · 物理学 2022-07-20 H. Poole , D. Cao , R. Epstein , I. Golovkin , T. Walton , S. X. Hu , M. Kasim , S. M. Vinko , J. R. Rygg , V. N. Goncharov , G. Gregori , S. P. Regan

Transport of fast electron in overdense plasmas is of key importance in high energy density physics. However, it is challenging to diagnose the fast electron transport in experiments. In this article, we study coherent transition radiation…

等离子体物理 · 物理学 2023-06-07 Yangchun Liu , Xiaochuan Ning , Dong Wu , Tianyi Liang , Peng Liu , Shujun Liu , Xu Liu , Zhengmao Sheng , Wei Hong , Yuqiu Gu , Xiantu He

Rayleigh-Taylor instability (RTI) occurs at the interface of two media when the heavier fluid is accelerated into the lighter fluid and is a prototypical hydrodynamic event present in many physical events. In high energy physics, this…

流体动力学 · 物理学 2022-03-03 Prasannabalaji Sundaram , Aditi Sengupta , Tapan K. Sengupta

Energetic charged particles generated by inertial confinement fusion (ICF) implosions encode information about the spatial morphology of the hot-spot and dense fuel during the time of peak fusion reactions. The knock-on deuteron imager…

The ratio of the symmetry energy coefficient to temperature, $a_sym/T$, in Fermi energy heavy ion collisions, has been experimentally extracted as a function of the fragment atomic number using isoscaling parameters and the variance of the…

For heavy-ion synchrotrons an efficient Multi-Turn Injection (MTI) from the injector linac is crucial in order to reach the specified currents using the available machine acceptance. The beam loss during the MTI must not exceed the limits…

加速器物理 · 物理学 2014-03-25 Sabrina Appel , Oliver Boine-Frankenheim

Light travel time changes due to gravitational waves may be detected within the next decade through precision timing of millisecond pulsars. Removal of frequency-dependent interstellar medium (ISM) delays due to dispersion and scattering is…

天体物理仪器与方法 · 物理学 2015-12-16 Nipuni Palliyaguru , Daniel Stinebring , Maura McLaughlin , Paul Demorest , Glenn Jones

We study Rayleigh-Taylor instability (RTI) at the coronal-prominence boundary by means of 2.5D numerical simulations in a single-fluid MHD approach including a generalized Ohm's law. The initial configuration includes a homogeneous magnetic…

太阳与恒星天体物理 · 物理学 2015-06-17 E. Khomenko , A. Diaz , A. de Vicente , M. Collados , M. Luna

The factors that influence the symmetry of an imploding detonation are investigated experimentally and theoretically. Detonations in sub-atmospheric acetylene-oxygen were initiated and made to converge in an apparatus that followed that of…

流体动力学 · 物理学 2024-08-09 Sebastian Rodriguez Rosero , Jason Loiseau , Andrew J. Higgins

Optical transition radiation interferometry (OTRI) has been shown to be a very useful technique to measure the divergence of electron beams with energies in the range of 15-100 MeV. However, application of this method to low energy or very…

加速器物理 · 物理学 2007-05-23 A. G. Shkvarunets , R. B. Fiorito , P. G. O'Shea

Coherent transition radiation (CTR) from relativistic electron beam interaction with an overdense plasma foil is investigated by making use of two-dimensional particle-in-cell simulations. Well-defined single electron beam either of uniform…

等离子体物理 · 物理学 2019-02-14 W. J. Ding , F. Y. Li , S. M. Weng , P. Bai , Z. M. Sheng

A wave near an isolated turning point is typically assumed to have an Airy function profile with respect to the separation distance. This description is incomplete, however, and is insufficient to describe the behavior of more realistic…

等离子体物理 · 物理学 2023-05-17 N. A. Lopez , E. Kur , D. J. Strozzi

A relativistic diffusion model with cylindrical symmetry, which propagates an initial state based on quantum chromodynamics in time towards a thermal equilibrium limit, is derived from nonequilibrium-statistical considerations: Adapting an…

高能物理 - 唯象学 · 物理学 2024-03-29 Johannes Hoelck , Georg Wolschin

We calculate the decoherence time of the ground state wave function of a nucleus in a high energy heavy ion collision. We define this time as the decay time of the ratio Tr D^2 / (Tr D)^2 of traces of the density matrix D. We find that this…

高能物理 - 唯象学 · 物理学 2008-11-26 Berndt Muller , Andreas Schafer

Radiation symmetry evaluation is critical to the laser driven Inertial Confinement Fusion (ICF), which is usually done by solving a view-factor equation model. The model is nonlinear, and the number of equations can be very large when the…

信号处理 · 电气工程与系统科学 2019-08-20 Yanfeng Zhang

The onset of the Rayleigh-Taylor instability is studied a compressible Brownian Yukawa fluid mixture on the ``molecular'' length and time scales of the individual particles. As a model, a two-dimensional phase-separated symmetric binary…

软凝聚态物质 · 物理学 2007-05-23 A. Wysocki , H. Löwen

A few percent wobbling-beam illumination nonuniformity is realized in heavy ion inertial confinement fusion (HIF) by a spiraling beam axis motion in the paper. So far the wobbling heavy ion beam (HIB) illumination was proposed to realize a…

等离子体物理 · 物理学 2012-10-29 T. Kurosaki , S. Kawata , K. Noguchi , S. Koseki , D. Barada , Y. Y. Ma , A. I. Ogoyski , J. J. Barnard , B. G. Logan

Tunneling ionization is one of the fundamental electron dynamics, which has wide applications in ultrafast physics. When frustrated tunneling ionization (FTI) is considered, the tunneling rate is not equivalent to ionization rate. However,…

光学 · 物理学 2022-02-21 Lifeng Wang , Hao Teng , Fei Li , Bingbing Wang , Xiaoxin Zhou , Peng He , Zhiyi Wei