89 citations · 622 across the 25 of their papers we have counts for
25 papers
Electron slingshot acceleration in relativistic preturbulent shocks explored via emitted photon polarization
Zheng Gong, Xiaofei Shen, Karen Z. Hatsagortsyan +1
Transient electron dynamics near the interface of counterstreaming plasmas at the onset of a relativistic collisionless shock (RCS) is investigated using particle-in-cell simulatio…
Colliding Pulse Injection of Polarized Electron Bunches in a Laser-Plasma Accelerator
Simon Bohlen, Zheng Gong, Michael J. Quin +2
Highly polarized, multi-kiloampere-current electron bunches from compact laser-plasma accelerators are desired for numerous applications. Current proposals to produce these beams s…
Spin-polarized electron beam generation in the colliding-pulse injection scheme
Zheng Gong, Michael J. Quin, Simon Bohlen +3
Employing colliding-pulse injection has been shown to enable high-quality electron beams to be generated from laser-plasma accelerators. Here by leveraging test particle simulation…
Free-electron Brewster radiation
Ruoxi Chen, Jialin Chen, Zheng Gong +7
Free-electron radiation offers an enticing route to create light emission at arbitrary spectral regime. However, this type of light emission is generally weak, which is intrinsical…
Low-velocity-favored transition radiation
Jialin Chen, Ruoxi Chen, Zheng Gong +8
When a charged particle penetrates through an optical interface, photon emissions emerge - a phenomenon known as transition radiation. Being paramount to fundamental physics, trans…
Electron polarization in ultrarelativistic plasma current filamentation instabilities
Zheng Gong, Karen Z. Hatsagortsyan, Christoph H. Keitel
Plasma current filamentation of an ultrarelativistic electron beam impinging on an overdense plasma is investigated, with emphasis on radiation-induced electron polarization. Parti…
Deciphering in situ electron dynamics of ultrarelativistic plasma via polarization pattern of emitted gamma photons
Zheng Gong, Karen Z. Hatsagortsyan, Christoph H. Keitel
Understanding and interpretation of the dynamics of ultrarelativistic plasma is a challenge, which calls for the development of methods for \textit{in situ} probing the plasma dyna…
Radiative polarization dynamics of relativistic electrons in an intense electromagnetic field
Yuhui Tang, Zheng Gong, Jinqing Yu +2
We propose a self-consistent model which utilizes the polarization vector to theoretically describe the evolution of spin polarization of relativistic electrons in an intense elect…
Retrieving transient magnetic fields of ultrarelativistic laser plasma via ejected electron polarization
Zheng Gong, Karen Z. Hatsagortsyan, Christoph H. Keitel
Interaction of an ultrastrong short laser pulse with non-prepolarized near-critical density plasma is investigated in an ultrarelativistic regime, with an emphasis on the radiative…
Energetic spin-polarized proton beams from two-stage coherent acceleration in laser-driven plasma
Zheng Gong, Yinren Shou, Yuhui Tang +1
We propose a scheme to overcome the great challenge of polarization loss in spin-polarized ion acceleration. When a petawatt laser pulse penetrates through a compound plasma target…
Cascaded Generation of a Sub-10-Attosecond Half-Cycle Pulse
Yinren Shou, Ronghao Hu, Zheng Gong +5
Sub-10-attosecond pulses with half-cycle electric fields provide exceptional options to detect and manipulate electrons in the atomic timescale. However, the availability of such p…
Super-Heavy Ions Acceleration Driven by Ultrashort Laser Pulses at Ultrahigh Intensity
Pengjie Wang, Zheng Gong, Seong Geun Lee +17
The acceleration of super-heavy ions (SHIs) from plasmas driven by ultrashort (tens of femtoseconds) laser pulses is a challenging topic waiting for breakthrough. The detecting and…
Emission of electromagnetic waves as a stopping mechanism for nonlinear collisionless ionization waves in a high- regime
Haotian Mao, Kathleen Weichman, Zheng Gong +3
A high energy density plasma embedded in a neutral gas is able to launch an outward-propagating nonlinear electrostatic ionization wave that traps energetic electrons. The trapping…
Quantum anti-quenching of radiation from laser-driven structured plasma channels
F. Mackenroth, Z. Gong, A. V. Arefiev
We demonstrate that in the interaction of a high-power laser pulse with a structured solid-density plasma-channel, clear quantum signatures of stochastic radiation emission manifes…
Energy gain by laser-accelerated electrons in a strong magnetic field
A. Arefiev, Z. Gong, A. P. L. Robinson
The manuscript deals with electron acceleration by a laser pulse in a plasma with a static uniform magnetic field . The laser pulse propagates perpendicular to the magnetic fi…
Collimated gamma-ray beams from structured laser-irradiated targets -- how to increase the efficiency without increasing the laser intensity
O. Jansen, T. Wang, Z. Gong +5
Using three-dimensional kinetic simulations, we examine the emission of collimated gamma-ray beams from structured laser-irradiated targets with a pre-filled cylindrical channel. T…
Strong energy enhancement in a laser-driven plasma-based accelerator through stochastic friction
Z. Gong, F. Mackenroth, X. Q. Yan +1
Conventionally, friction is understood as an efficient dissipation mechanism depleting a physical system of energy as an unavoidable feature of any realistic device involving movin…
A New Injection and Acceleration Scheme of Positrons in the Laser-Plasma Bubble Regime
Z. Y. Xu, C. F. Xiao, H. Y. Lu +15
A novel approach for positron injection and acceleration in laser driven plasma wakefield is proposed. A theoretical model is developed and confirmed through PIC simulation. One ri…
Impact of ion dynamics on laser-driven electron acceleration and gamma-ray emission in structured targets at ultra-high laser intensities
T. Wang, Z. Gong, K. Chin +1
We examine the impact of the ion dynamics on laser-driven electron acceleration in an initially empty channel irradiated by an ultra-high intensity laser pulse with W…
Radiation rebound and Quantum Splash in Electron-Laser Collision
Z. Gong, R. H. Hu, J. Q. Yu +3
The radiation reaction (RR) is expected to play a critical role in light-matter interactions at extreme intensity. Utilizing the theoretical analyses and three-dimensional (3D) num…
Forward sliding-swing acceleration: electron acceleration by high-intensity lasers in strong plasma magnetic fields
Z. Gong, F. Mackenroth, T. Wang +3
A high-intensity laser beam propagating through a dense plasma drives a strong current that robustly sustains a strong quasi-static Mega Tesla-level azimuthal magnetic field. The t…
Highly collimated electron acceleration by longitudinal laser fields in a hollow-core target
Z. Gong, A. P. L. Robinson, X. Q. Yan +1
The substantial angular divergence of electron beams produced by direct laser acceleration is often considered as an inherent negative feature of the mechanism. The divergence howe…
Laser Driving Highly Collimated -ray Pulses for the Generation of and Pairs in Collider
J. Q. Yu, R. H. Hu, Z. Gong +6
A scheme to generate highly collimated -ray pulse is proposed for the production of muon and electron pairs in collider. The -ray pulse, with high conversion efficiency…
Enhanced laser-driven ion acceleration by superponderomotive electrons generated from near-critical-density plasma
J. H. Bin, M. Yeung, Z. Gong +10
We report on the experimental studies of laser driven ion acceleration from double-layer target where a near-critical density target with a few-micron thickness is coated in front…