129 citations · 465 across the 25 of their papers we have counts for
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Applying Machine Learning Methods to Laser Acceleration of Protons: Lessons Learned from Synthetic Data
Ronak Desai, Thomas Zhang, Ricky Oropeza +6
Researchers in the field of ultra-intense laser science are beginning to embrace machine learning methods. In this study we consider three different machine learning methods -- a t…
A Particle-In-Cell Code Comparison for Ion Acceleration: EPOCH, LSP, and WarpX
Joseph R. Smith, Chris Orban, Nashad Rahman +3
There are now more Particle-in-Cell (PIC) codes than ever before that researchers use to simulate intense laser-plasma interactions. To date, there have been relatively few direct…
Particle-in-Cell modeling of a potential demonstration experiment for double pulse enhanced target normal sheath acceleration
Nashad Rahman, Joseph R. Smith, Gregory Ngirmang +1
Ultra intense lasers are a promising source of energetic ions for various applications. An interesting approach described in Ferri et al. 2019 argues from Particle-in-Cell simulati…
Code-to-Code Comparison and Validation of the Radiation-Hydrodynamics Capabilities of the FLASH Code Using a Laboratory Astrophysical Jet
Chris Orban, Milad Fatenejad, Don Q. Lamb
The potential for laser-produced plasmas to yield fundamental insights into high energy density physics (HEDP) and deliver other useful applications can sometimes be frustrated by…
Optimizing Laser-Plasma Interactions for Ion Acceleration using Particle-in-Cell Simulations and Evolutionary Algorithms
Joseph R. Smith, Chris Orban, John T. Morrison +4
The development of ultra-intense laser-based sources of high energy ions is an important goal, with a variety of potential applications. One of the barriers to achieving this goal…
Experimental observation and computational modeling of radial Weibel instability in high intensity laser-plasma interactions
Gregory K. Ngirmang, John T. Morrison, Kevin M. George +5
When a relativistic intensity laser interacts with the surface of a solid density target, suprathermal electron currents are subject to Weibel instability filamentation when propag…
Particle-in-Cell Simulations of Density Peak Formation and Ion Acceleration from Short Pulse Laser-Driven Ponderomotive Steepening
Joseph R. Smith, Chris Orban, Gregory K. Ngirmang +4
We use particle-in-cell (PIC) simulations and simple analytic models to investigate the laser-plasma interaction known as ponderomotive steepening. When normally incident laser lig…
Particle-in-Cell Simulations of Electron Beam Production from Infrared Ultra-intense Laser Interactions
Gregory K. Ngirmang, Chris Orban, Scott Feister +3
Advances in ultra-intense laser technology are enabling, for the first time, relativistic intensities at mid-infrared (mid-IR) wavelengths. Anticipating further experimental resear…
3D PIC simulations of electron beams created via reflection of intense laser light from a water target
Gregory K. Ngirmang, Chris Orban, Scott Feister +4
We present 3D Particle-in-Cell (PIC) modeling of an ultra-intense laser experiment by the Extreme Light group at the Air Force Research Laboratory (AFRL) using the PIC code LSP. Th…
Relativistic electron acceleration by mJ-class kHz lasers normally incident on liquid targets
Scott Feister, Drake R. Austin, John T. Morrison +10
We report observation of kHz-pulsed-laser-accelerated electron energies up to 3 MeV in the - (backward) direction from a 3 mJ laser interacting at normal incidence…
Backward-propagating MeV electrons from W/cm laser interactions with water
John T. Morrison, Enam A. Chowdhury, Kyle D. Frische +6
We present an experimental study of the generation of MeV electrons opposite to the direction of laser propagation following the relativistic interaction at normal incidence…
Backward-Propagating MeV Electrons in Ultra-Intense Laser Interactions: Standing Wave Acceleration and Coupling to the Reflected Laser Pulse
Chris Orban, John T. Morrison, Enam D. Chowdhury +4
Laser-accelerated electron beams have been created at a kHz repetition rate from the {\it reflection} of intense ( W/cm), 40 fs laser pulses focused on a con…
A Radiation-Hydrodynamics Code Comparison for Laser-Produced Plasmas: FLASH versus HYDRA and the Results of Validation Experiments
Chris Orban, Milad Fatenejad, Sugreev Chawla +2
The potential for laser-produced plasmas to yield fundamental insights into high energy density physics (HEDP) and deliver other useful applications can sometimes be frustrated by…