21 citations · 82 across the 13 of their papers we have counts for
14 papers
Electron heat flux and propagating fronts in plasma thermal quench via ambipolar transport
Yanzeng Zhang, Jun Li, Xianzhu Tang
The thermal collapse of a nearly collisionless plasma interacting with a cooling spot, in which the electron parallel heat flux plays an essential role, is investigated both theore…
Denoising Particle-In-Cell Data via Smoothness-Increasing Accuracy-Conserving Filters with Application to Bohm Speed Computation
Matthew J. Picklo, Qi Tang, Yanzeng Zhang +2
The simulation of plasma physics is computationally expensive because the underlying physical system is of high dimensions, requiring three spatial dimensions and three velocity di…
Staged cooling of a fusion-grade plasma in a tokamak thermal quench
Jun Li, Yanzeng Zhang, Xian-Zhu Tang
In tokamak disruptions where the magnetic connection length becomes comparable to or even shorter than the plasma mean-free-path, parallel transport can dominate the energy loss an…
On the collisional damping of plasma velocity space instabilities
Yanzeng Zhang, Xian-Zhu Tang
For plasma velocity space instabilities driven by particle distributions significantly deviated from a Maxwellian, weak collisions can damp the instabilities by an amount that is s…
Resolving the mystery of electron perpendicular temperature spike in the plasma sheath
Yanzeng Zhang, Yuzhi Li, Bhuvana Srinivasan +1
A large family of plasmas has collisional mean-free-path much longer than the non-neutral sheath width, which scales with the plasma Debye length. The plasmas, particularly the ele…
Cooling flow regime of a plasma thermal quench
Yanzeng Zhang, Jun Li, Xian-Zhu Tang
A large class of Laboratory, Space, and Astrophysical plasmas is nearly collisionless. When a localized energy or particle sink, for example, in the form of a radiative cooling spo…
Bohm criterion of plasma sheaths away from asymptotic limit
Yuzhi Li, Bhuvana Srinivasan, Yanzeng Zhang +1
The plasma exit flow speed at the sheath entrance is constrained by the Bohm criterion. The so-called Bohm speed regulates the plasma particle and power exhaust fluxes to the wall,…
Anomalous edge plasma transport, neutrals, and divertor plasma detachment
Yanzeng Zhang, Sergei I. Krasheninnikov, Rebecca Masline +1
An impact of neutrals on anomalous edge plasma transport and zonal flow (ZF) is considered. As an example, it is assumed that edge plasma turbulence is driven by the resistive drif…
Electron dynamics in counter-propagating laser waves
Yanzeng Zhang, Sergei Krasheninnikov
The electron dynamics in counter-propagating laser waves is investigated by employing a novel approach, where the new Hamiltonian is time-independent when the perturbative laser wa…
A new approach to stochastic acceleration of electrons in colliding laser fields
Yanzeng Zhang, Sergei Krasheninnikov
The mechanism of stochastic electron acceleration in colliding laser waves is investigated by employing proper canonical variables and effective time, such that the new Hamiltonian…
Stochastic electron heating in the laser and quasi-static electric and magnetic fields
Yanzeng Zhang, S. I. Krasheninnikov, Alexey Knyazev
The dynamics of relativistic electrons in the intense laser radiation and quasi-static electromagnetic fields both along and across to the laser propagating direction are studied i…
Radiation friction force effects on electron dynamics in ultra-intensity laser pulse
Yanzeng Zhang, Sergei Krasheninnikov
The electron dynamics in the ultra-high intensity laser pulse with radiation friction force in theLandau-Lifshitz form are studied. It is demonstrated that widely used approximatio…
Electron dynamics in laser and quasi-static transverse electric and longitudinal magnetic fields
Yanzeng Zhang, Sergei Krasheninnikov
By deriving the 3/2 dimensional Hamiltonian equations for electrons in the intense laser radiation and quasi-static transverse electric and longitudinal magnetic fields, the electr…
Electron heating in the laser and static electric and magnetic fields
Yanzeng Zhang, S. I. Krasheninnikov
A 2D slab approximation of the interactions of electrons with intense linearly polarized laser radiation and static electric and magnetic fields is widely used for both numerical s…