A5003688874- Laser-Plasma Interactions and Diagnostics
- Astro and Planetary Science
- Terahertz technology and applications
- Magnetic confinement fusion research
- Laser Design and Applications
- Gyrotron and Vacuum Electronics Research
- Laser-induced spectroscopy and plasma
- Planetary Science and Exploration
- Spacecraft Dynamics and Control
- Advanced X-ray Imaging Techniques
- Nuclear Physics and Applications
- Particle Accelerators and Free-Electron Lasers
- Laser-Matter Interactions and Applications
- Spectroscopy and Laser Applications
- Quantum, superfluid, helium dynamics
- Particle accelerators and beam dynamics
- Advanced X-ray and CT Imaging
- Spacecraft Design and Technology
- Optical Systems and Laser Technology
- Space Exploration and Technology
- Strong Light-Matter Interactions
- Metallurgical Processes and Thermodynamics
- High-pressure geophysics and materials
- Semiconductor Quantum Structures and Devices
- Electrohydrodynamics and Fluid Dynamics
University of Rochester
2019-2025
Energetics (United States)
2021-2024
Los Alamos National Laboratory
2024
Applied Energetics (United States)
2022
Laser-plasma accelerators (LPAs) driven by picosecond-scale, kilojoule-class lasers can generate particle beams and x-ray sources that could be utilized in experiments multi-kilojoule, high-energy-density science (HEDS) drivers such as the OMEGA laser at Laboratory for Laser Energetics (LLE) or National Ignition Facility Lawrence Livermore Laboratory. This paper reports on development of first LPA a short-pulse, (OMEGA EP) connected to multi-kilojoule HEDS driver (OMEGA). In experiments,...
Inference of joule-class THz radiation sources from microchannel targets driven with hundreds joule, picosecond lasers is reported. this magnitude are useful for nonlinear pumping matter and charged-particle acceleration manipulation. Microchannel demonstrate increased laser-THz conversion efficiency compared to planar foil targets, laser energy up ∼0.9
The physics basis for an electron-beam-based Compton scattering x-ray source is investigated single-shot experiments at the major high-energy-density facilities, such as Omega Laser Facility, National Ignition and <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi>Z</a:mi></a:mrow></a:math> pulsed power facility. A of monoenergetic (<c:math xmlns:c="http://www.w3.org/1998/Math/MathML"...
Relativistic transparency enables volumetric laser interaction with overdense plasmas and direct acceleration of electrons to relativistic velocities. The dense electron current generates a magnetic filament field strength the order amplitude ($>$10$^5$ T). traps radially, enabling efficient conversion energy into MeV photons by oscillations in filament. use microstructured targets stabilizes hosing instabilities associated relativistically transparent interactions, resulting robust...
Contact and projection electron radiography of static targets was demonstrated using a laser-plasma accelerator driven by kilojoule, picosecond-class laser as source relativistic electrons with an average energy 20 MeV. Objects areal densities high 7.7 g/cm2 were probed in materials ranging from plastic to tungsten, radiographs resolution good 90 μm produced. The effects electric fields produced the ablation objects observed are well described analytic expression relating imaging...
A highly adaptable and robust THz energy meter has been designed implemented to detect energetic pulses from high intensity (greater than 1E18 watts per square centimeter) laser plasma interactions on OMEGA EP. radiation the driven target is detected by a shielded pyrometer. second identical pyrometer used for background subtraction. The detector can be configured in 1 mm 30 microns (0.3 10 THz) range pulse energies joules microjoules via changes filtration, aperture size position....
We outline a method of beamed power for propulsion that utilizes relativistic electron beams. The physics charged particle beam propagation in the space plasma environment is discussed and long-range (>100 A.U.) advantage beams emphasized. A preliminary statite based emitter powering probes to ~0.1c proposed challenges beam-power uses are explored.
Liquid metal (LM) plasma-facing components (PFCs) (LM-PFCs) within next-generation fusion reactors are expected to enhance plasma confinement, facilitate tritium breeding, improve reactor thermal efficiency, and withstand large heat particle fluxes better than solid made from tungsten, molybdenum, or graphite. Some LM divertor concepts intended for long-pulse operation at >20 MW/m2 incorporate thin (~1 cm), fast-moving (~5 10 m/s), free-surface flows. Such systems will require a range of...
Spin-polarized fusion has the potential to lower radiation shielding and ignition requirements for rockets while simultaneously increasing fuel burnup provide better momentum coupling a spacecraft. This is estimated using simple, analytic techniques. Both DT D\textsuperscript{3}He fuels are analyzed.
Inference of joule-class THz radiation sources from microchannel targets driven with hundreds joule, picosecond lasers is reported. this magnitude are useful for nonlinear pumping matter and charged-particle acceleration manipulation. Microchannel demonstrate increased laser-THz conversion efficiency compared to planar foil targets, laser energy up approximately 0.9% in the best cases.
A novel use of high temperature superconducting (HTS) electromagnets for human sized microgravity research and mitigation is outlined. Recent advances in HTS technology have resulted that potentially could levitate large diamagnetic targets, such as organs, additive manufacturing or entire humans training. These applications are then used a springboard to discuss the possibility active compensation inertial dampeners future space travel applications. Finite element simulations check validity...
The physics basis for an electron-beam based Compton scattering (ECOS) x-ray source is investigated single-shot experiments at major high energy density facilities such as the Omega Laser Facility, National Ignition and Z pulsed power facility. A of monoenergetic ($δε/ε< 5\%$) 10- to 50-keV x rays can be produced by a short-pulse optical laser 23- 53-MeV electron beam collimating scattered photons. number spectrum photons calculated function packet charge, pulse duration, intensity,...