J. A. Cobble
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View article: Defect-induced mix experiment for NIF
Defect-induced mix experiment for NIF Open
\nThe Defect Induced Mix Experiment (DIME-II) will measure the implosion and mix characteristics of CH capsules filled with 5 atmospheres of DT by incorporating mid-Z dopant layers of Ge and Ga. This polar direct drive (PDD) experiment als…
View article: Overview of LANL short-pulse ion acceleration activities
Overview of LANL short-pulse ion acceleration activities Open
An overview of Los Alamos National Laboratory's activities related to short-pulse ion acceleration is presented. LANL is involved is several projects related to Inertial Confinement Fusion (Fast Ignition) and Laser-Ion Acceleration. LANL h…
View article: Defect implosion experiments (DIME)
Defect implosion experiments (DIME) Open
View article: Streaked X Ray spectra from polar direct drive capsules with an equatorial defect: 4 pi and defect implosion mix
Streaked X Ray spectra from polar direct drive capsules with an equatorial defect: 4 pi and defect implosion mix Open
View article: Analysis of defect imaging capsule implosions
Analysis of defect imaging capsule implosions Open
View article: Defect-induced mix experiments for NIF quantifying 4-pi mix and defect mix in ICF implosions
Defect-induced mix experiments for NIF quantifying 4-pi mix and defect mix in ICF implosions Open
View article: Progress toward modeling spectroscopic signatures of mix on Omega and NIF
Progress toward modeling spectroscopic signatures of mix on Omega and NIF Open
View article: Comparison of Measured and Simulated Properties of Laser-Driven Ion Beams
Comparison of Measured and Simulated Properties of Laser-Driven Ion Beams Open
View article: Defect implosion experiment at omega-60
Defect implosion experiment at omega-60 Open
View article: Polar Direct-Drive Plastic Capsule Implosions for Studying Mix on the National Ignition Facility
Polar Direct-Drive Plastic Capsule Implosions for Studying Mix on the National Ignition Facility Open
View article: Thomson parabola ion energy analyzer
Thomson parabola ion energy analyzer Open
A new, versatile Thomson parabola ion energy (TPIE) analyzer has been designed and constructed for use at the OMEGA-EP facility. Multi-MeV ions from EP targets are transmitted through a W pinhole into a (5- or 8-kG) magnetic field and subs…
View article: The Defect Induced Mix Experiment (DIME) for NIF
The Defect Induced Mix Experiment (DIME) for NIF Open
LANL will perform two Defect Induced Mix Experiment (DIME) implosion campaigns on NIF in July and September, 2012. This presentation describes the goals for these shots and the experimental configuration and diagnostic set up to collect th…
View article: Radiation drive with a composite laser pulse shape
Radiation drive with a composite laser pulse shape Open
The objective is to develop a 6-ns Hohlraum environment on Omega for Be anisotropy studies. In particular, they are seeking an environment for Be isotropy studies with enough growth times to assess the suitability of Be for NIF ignition ca…
View article: Transition to efficient, unsuppressed bulk-target ion acceleration via high-fluence laser irradiation
Transition to efficient, unsuppressed bulk-target ion acceleration via high-fluence laser irradiation Open
A high-intensity laser irradiating a few-μm solid foil will accelerate ions from the bulk of the target as well as protons from a surface contaminant layer. Experimental measurements of ion spectra using the OMEGA EP laser (0.25–1 kJ, 10 p…
View article: Laser-driven micro-Coulomb charge movement and energy conversion to relativistic electrons
Laser-driven micro-Coulomb charge movement and energy conversion to relativistic electrons Open
Development of robust instrumentation has shown evidence for a multi-μC expulsion of relativistic electrons from a sub-μm-thick foil, laser illuminated with 60–70 J on target at 2 × 1020 W/cm2. From previous work and with electron spectros…
View article: The Bumpy Torus Experiment
The Bumpy Torus Experiment Open
This document summarizes the Bumpy Torus Experiment as a viable fusion reactor concept. Conclusions reached include the following: In 30 years, order-of-magnitude technological advances have occurred in multiple areas of plasma heating and…
View article: Progress in the development of the MARBLE platform for studying thermonuclear burn in the presence of heterogeneous mix on OMEGA and the National Ignition Facility
Progress in the development of the MARBLE platform for studying thermonuclear burn in the presence of heterogeneous mix on OMEGA and the National Ignition Facility Open
Mix of ablator material into fuel of an ICF capsule adds non-burning material, diluting the fuel and reducing burn. The amount of the reduction is dependent in part on the morphology of the mix. A probability distribution function (PDF) bu…
View article: Development of a polar direct drive platform for mix and burn experiments on the National Ignition Facility
Development of a polar direct drive platform for mix and burn experiments on the National Ignition Facility Open
Capsules driven with polar drive [1, 2] on the National Ignition Facility [3] are being used [4] to study mix in convergent geometry. In preparation for experiments that will utilize deuterated plastic shells with a pure tritium fill, hydr…