Hohlraum-Driven High-Convergence Implosion Experiments with Multiple Beam Cones on the Omega Laser Facility

2002 ◽  
Vol 89 (16) ◽  
Author(s):  
Peter Amendt ◽  
R. E. Turner ◽  
O. L. Landen
Keyword(s):  
Multiple Beam ◽  
Laser Facility ◽  
Omega Laser

Hohlraum Symmetry Experiments with Multiple Beam Cones on the Omega Laser Facility

1998 ◽  
Vol 81 (1) ◽  
pp. 108-111 ◽  
Author(s):  
T. J. Murphy ◽  
J. M. Wallace ◽  
N. D. Delamater ◽  
Cris W. Barnes ◽  
P. Gobby ◽  
...  
Keyword(s):  
Multiple Beam ◽  
Laser Facility ◽  
Omega Laser

Hohlraum-Driven Mid-Z(SiO2) Double-Shell Implosions on the Omega Laser Facility and Their Scaling to NIF

2009 ◽  
Vol 103 (14) ◽  
Author(s):  
H. F. Robey ◽  
P. A. Amendt ◽  
J. L. Milovich ◽  
H.-S. Park ◽  
A. V. Hamza ◽  
...  
Keyword(s):  
Laser Facility ◽  
Omega Laser

scholarly journals Implementation of a Faraday rotation diagnostic at the OMEGA laser facility

2018 ◽  
Vol 6 ◽  
Author(s):  
A. Rigby ◽  
J. Katz ◽  
A. F. A. Bott ◽  
T. G. White ◽  
P. Tzeferacos ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Faraday Rotation ◽  
Field Measurements ◽  
Thomson Scattering ◽  
Proton Radiography ◽  
Time Resolved ◽  
Rotation Measurement ◽  
Laser Facility ◽  
Omega Laser

Magnetic field measurements in turbulent plasmas are often difficult to perform. Here we show that for ${\geqslant}$kG magnetic fields, a time-resolved Faraday rotation measurement can be made at the OMEGA laser facility. This diagnostic has been implemented using the Thomson scattering probe beam and the resultant path-integrated magnetic field has been compared with that of proton radiography. Accurate measurement of magnetic fields is essential for satisfying the scientific goals of many current laser–plasma experiments.

3ω transmitted beam diagnostic at the Omega Laser Facility

2006 ◽  
Vol 77 (10) ◽  
pp. 10E507 ◽  
Author(s):  
D. H. Froula ◽  
V. Rekow ◽  
C. Sorce ◽  
K. Piston ◽  
R. Knight ◽  
...  
Keyword(s):  
Transmitted Beam ◽  
Laser Facility ◽  
Omega Laser

scholarly journals Foil backlighter development at the OMEGA laser facility for extended x-ray absorption fine structure experiments

2020 ◽  
Vol 91 (8) ◽  
pp. 086101
Author(s):  
A. Do ◽  
F. Coppari ◽  
Y. Ping ◽  
A. Krygier ◽  
G. E. Kemp ◽  
...  
Keyword(s):  
Fine Structure ◽  
X Ray ◽  
Absorption Fine ◽  
Laser Facility ◽  
Omega Laser ◽  
X Ray Absorption

scholarly journals Laser uniformity and hydrodynamic stability experiments at the OMEGA laser facility

2000 ◽  
Vol 18 (1) ◽  
pp. 11-19 ◽  
Author(s):  
T.R. BOEHLY ◽  
A. BABUSHKIN ◽  
D.K. BRADLEY ◽  
R.S. CRAXTON ◽  
J.A. DELETTREZ ◽  
...  
Keyword(s):  
Laser System ◽  
Smoothing Techniques ◽  
Third Harmonic ◽  
Broad Bandwidth ◽  
Single Beam ◽  
Direct Measurements ◽  
Spectral Dispersion ◽  
Laser Facility ◽  
Omega Laser ◽  
Physics Experiments

Experiments to demonstrate the effects of various beam-smoothing techniques have been performed on the 60-beam, 30-kJ UV OMEGA laser system. These include direct measurements of the effect beam-smoothing techniques have on laser beam nonuniformity and on both planar and spherical targets. Demonstrated techniques include polarization smoothing and “dual-tripler” third-harmonic generation required for future broad bandwidth (∼1 THz) smoothing by spectral dispersion (SSD). The effects of improvements in single-beam uniformity are clearly seen in the target-physics experiments, which also show the effect of the laser pulse shape on the efficacy of SSD smoothing. Saturation of the Rayleigh-Taylor (RT) growth of the broad-bandwidth features, in agreement with the Haan model (Haan, 1989), produced by laser imprinting has also been observed.

scholarly journals Measurements of the ablation-front trajectory and low-mode nonuniformity in direct-drive implosions using x-ray self-emission shadowgraphy

2015 ◽  
Vol 3 ◽  
Author(s):  
D.T. Michel ◽  
A.K. Davis ◽  
W. Armstrong ◽  
R. Bahr ◽  
R. Epstein ◽  
...  
Keyword(s):  
Plasma Phys ◽  
X Rays ◽  
Direct Drive ◽  
Time Resolved ◽  
X Ray ◽  
Laser Facility ◽  
Omega Laser ◽  
Control Fusion ◽  
Pm 10 ◽  
Ablation Front

Self-emission x-ray shadowgraphy provides a method to measure the ablation-front trajectory and low-mode nonuniformity of a target imploded by directly illuminating a fusion capsule with laser beams. The technique uses time-resolved images of soft x-rays ( ${>}1$  keV) emitted from the coronal plasma of the target imaged onto an x-ray framing camera to determine the position of the ablation front. Methods used to accurately measure the ablation-front radius ( ${\it\delta}R=\pm 1.15~{\rm\mu}\text{m}$ ), image-to-image timing ( ${\it\delta}({\rm\Delta}t)=\pm 2.5$  ps) and absolute timing ( ${\it\delta}t=\pm 10$  ps) are presented. Angular averaging of the images provides an average radius measurement of ${\it\delta}(R_{\text{av}})=\pm 0.15~{\rm\mu}\text{m}$ and an error in velocity of ${\it\delta}V/V=\pm 3\%$ . This technique was applied on the Omega Laser Facility [Boehly et al., Opt. Commun. 133, 495 (1997)] and the National Ignition Facility [Campbell and Hogan, Plasma Phys. Control. Fusion 41, B39 (1999)].

scholarly journals Hohlraum-Driven Ignitionlike Double-Shell Implosions on the Omega Laser Facility

2005 ◽  
Vol 94 (6) ◽  
Author(s):  
Peter A. Amendt ◽  
Harry F. Robey ◽  
H.-S. Park ◽  
R. E. Tipton ◽  
R. E. Turner ◽  
...  
Keyword(s):  
Laser Facility ◽  
Omega Laser

scholarly journals Experimental observations of turbulent mixing due to Kelvin–Helmholtz instability on the OMEGA Laser Facility

2012 ◽  
Vol 19 (9) ◽  
pp. 092702 ◽  
Author(s):  
V. A. Smalyuk ◽  
J. F. Hansen ◽  
O. A. Hurricane ◽  
G. Langstaff ◽  
D. Martinez ◽  
...  
Keyword(s):  
Turbulent Mixing ◽  
Helmholtz Instability ◽  
Laser Facility ◽  
Omega Laser
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