A5103095046- Laser-Plasma Interactions and Diagnostics
- Laser-Matter Interactions and Applications
- Laser-induced spectroscopy and plasma
- Atmospheric Ozone and Climate
- Particle Dynamics in Fluid Flows
- Combustion and Detonation Processes
- Laser Applications in Dentistry and Medicine
- Astrophysics and Star Formation Studies
- Advanced Chemical Physics Studies
- Spectroscopy and Laser Applications
- Ion-surface interactions and analysis
- Atomic and Molecular Physics
- Fusion materials and technologies
- Cold Fusion and Nuclear Reactions
- Pain Management and Treatment
- Laser Material Processing Techniques
Lawrence Livermore National Laboratory
1997-2016
Princeton University
1985-1986
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation D. S. Clark, E. Hinkel, C. Eder, O. Jones, W. Haan, B. A. Hammel, M. Marinak, J. L. Milovich, H. F. Robey, Suter, R. P. Town; Detailed implosion modeling of deuterium-tritium layered experiments on the National Ignition Facility. Phys. Plasmas 1 May 2013; 20 (5): 056318. https://doi.org/10.1063/1.4802194...
The recently completed National Ignition Campaign (NIC) on the Facility (NIF) showed significant discrepancies between post-shot simulations of implosion performance and experimentally measured performance, particularly in thermonuclear yield. This discrepancy simulation observation persisted despite concerted efforts to include all known sources degradation within a reasonable two-dimensional (2-D), even three-dimensional (3-D), model, e.g., using surface imperfections radiation drives...
Recent experimental results using the “high foot” pulse shape for inertial confinement fusion ignition experiments on National Ignition Facility (NIF) [Moses et al., Phys. Plasmas 16, 041006 (2009)] have shown encouraging progress compared to earlier “low experiments. These strongly suggest that controlling ablation front instability growth can significantly improve implosion performance even in presence of persistent, large, low-mode distortions. Simultaneously, hydrodynamic radiography...
The deceleration stage of inertial confinement fusion implosions is modeled in detail using three-dimensional simulations designed to match experiments at the National Ignition Facility. In this final implosion, shocks rebound from center capsule, forming high-temperature, low-density hot spot and slowing incoming fuel. flow field that results process highly influences many aspects implosion. interior capsule has high-velocity motion, but viscous effects limit range scales develop. bulk...
At the National Ignition Facility, a thermal X-ray drive is created by laser energy from 192 beams heating inside walls of gold cylinder called “hohlraum.” The x-ray heats and implodes fuel capsule. enter hohlraum via entrance holes (LEHs) at each end. LEH radius decreases as heated plasma material blows radially inward but this largely balanced hot high-intensity region in center pushing outward. on capsule deduced measuring time evolution spectra x-radiation coming out correcting for...
An in vitro study of laser tissue welding mediated with a dye-enhanced protein solder was performed. Freshly harvested sections porcine aorta were used for the experiments. Arteriotomies approximately 4 mm length treated using an 805 nm continuous-wave diode coupled to 1-mm diameter fiber. Temperature histories surface weld site obtained fiberoptic-based infrared thermometer. The experimental effort complemented by LATIS (LAser-TISsue) computer code, which numerically simulates exposure...
Several dozen high convergence inertial confinement fusion ignition experiments have now been completed on the National Ignition Facility (NIF). These include both "low foot" from Campaign (NIC) and more recent "high experiments. At time of NIC, there were large discrepancies between simulated implosion performance experimental data. In particular, simulations over predicted neutron yields by up to an order magnitude, some showed clear evidence mixing ablator material deep into hot spot that...
view Abstract Citations (5) References (36) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Ionization equilibrium in isolated HII regions. Eder, D. C. Theoretical ionization models are combined with Copernicus ultraviolet observations to study a particular H II region absorption-line component the spectra of Lambda Sco and Upsilon Sco. The imply that is characterized by hydrogen density approximately 0.2/cu cm an extent along line sight 16 pc. Three choices...
The recently completed National Ignition Campaign on the Facility showed significant discrepancies between 2-D simulations predictions of implosion performance and experimentally measured performance, particularly in thermonuclear yield. This discrepancy simulation observation persisted despite concerted efforts to include all known sources degradation within a reasonable model, e.g., using surface imperfections radiation drives adjusted reproduce observed trajectories. Since this study was...
view Abstract Citations (1) References (9) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Local Interstellar Medium. IV. Line of Sight to theta Scorpii Eder, D. C. ; York, G. Profile fitting Copernicus UV absorption lines separates out four components in the line sight Upsilon Sco. Velocities for three components, including two associated with major H I and II regions, are excellent agreement corresponding nearby Lambda velocity remaining component is...