A5069116428- Laser-Plasma Interactions and Diagnostics
- High-pressure geophysics and materials
- Laser-induced spectroscopy and plasma
- Advanced X-ray Imaging Techniques
- Nuclear Physics and Applications
- Advanced X-ray and CT Imaging
- Particle Detector Development and Performance
- Advanced Optical Sensing Technologies
- Particle Accelerators and Free-Electron Lasers
- Laser Design and Applications
- Medical Imaging Techniques and Applications
Lawrence Livermore National Laboratory
2023-2024
Florida Agricultural and Mechanical University
2021-2024
Massachusetts Institute of Technology
2023
Rutherford Appleton Laboratory
2023
The University of Texas at Austin
2023
University of California, Los Angeles
2023
General Atomics (United States)
2023
Compound parabolic concentrator (CPC) targets are utilized at the National Ignition Facility Advanced Radiographic Capability (NIF-ARC) laser to enhance acceleration of electrons and production high energy photons, for durations 10 ps energies up 2.4 kJ. A large enhancement mean electron (>2 ×) photon brightness (>10×) is found with CPC compared flat targets. Using multiple diagnostic techniques different spatial locations scaling by gold activation data, spectra characterized...
A scaling study of short-pulse laser-driven proton and electron acceleration was conducted as a function pulse duration, laser energy, intensity in the multi-picosecond (ps) regime (∼0.8 ps–20 ps). Maximum energies significantly greater than established laws were observed, consistent with observations at other multi-ps facilities. In addition, maximum temperatures this found to be strongly dependent on duration preplasma conditions. modified model is presented that able better represent...
We report on experimental results from a high-intensity laser interaction with cone targets that increase the number (×3) and temperature of measured hot electrons over traditional planar target. This is caused by substantial in plasma density within target geometry, which was induced 17 ± 9 mJ prepulse arrived 1.5 ns prior to main high intensity (>1019 W/cm2). Three-dimensional hydrodynamic simulations are conducted using hydra show create substantially longer denser than due...
A comparative study of x-ray sources generated with different mechanisms from self-modulated laser wakefield acceleration (SM-LWFA) electrons was performed to compare the source size or spatial resolution for use in high energy density science applications. We examine betatron, inverse Compton scattering, and bremsstrahlung radiation a Fresnel diffraction based formalism modified ray tracing model. observe dependence on generation process, parameters, what is possible other regimes LWFA, as...
Laser-driven MeV x-ray radiography of dynamic, dense objects demands a small, high flux source energetic x-rays to generate an image with sufficient quality. Understanding the multi-MeV spectrum underscores ability extrapolate from current laser sources new future lasers that might deploy this modality. Here, we present small study existing diagnostics and techniques. We also work National Ignition Facility-Advanced Radiographic Capability, where three measure up 30 MeV. Finally, discuss...
High intensity lasers (>1 x 10 18 W/cm 2 ) interacting with a plasma can accelerate spectrum of electrons whose temperature be several mega-electron volts. It has been shown experimentally that the efficiency laser energy into this electron population is on order 10s percent. There are many potential applications driven sources including acceleration protons from mechanism known as Target-Normal-Sheath-Acceleration and subsequent generation neutrons. One application x-ray radiography. If...