I. C. Smith

Experimental Demonstration of Dynamical Similarity of the Preseeded Magneto-Rayleigh-Taylor Instability in Scaled Z-Pinch Implosions

D. E. Ruiz, David Yager-Elorriaga, Jeffrey Fein, J. Carpenter et autres

With the achievement of thermonuclear ignition, there is interest to increase the performance of inertial-confinement-fusion (ICF) systems to reach high fusion yields and high-energy gain for energy-production purposes. One approach to achieve this is magnetic-direct-drive (MDD) ICF, where magnetic fields are used …

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Magnetized liner inertial fusion platform development to assess performance scaling with drive parameters

M. R. Gómez, S. A. Slutz, Christopher Jennings, A. J. Harvey-Thompson et autres

Magnetized liner inertial fusion (MagLIF) experiments have demonstrated fusion-relevant ion temperatures up to 3.1 keV and thermonuclear production of up to 1.1 × 1013 deuterium–deuterium neutrons. This performance was enabled through platform development that provided increases in applied magnetic field, coupled preheat …

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Development of a high performance MagLIF target platform using high aspect ratio coated liners and low-mix laser preheat

A. J. Harvey-Thompson, Matthias Geißel, William Lewis, David Yager-Elorriaga et autres

We report on a series of Magnetized Liner Inertial Fusion (MagLIF) experiments conducted on the Z pulsed power facility that utilized high aspect ratio (ratio of outer radius to wall thickness) liners with dielectric coatings and low-mix laser preheat configurations. The liners …

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Performance Scaling in Magnetized Liner Inertial Fusion Experiments

M. R. Gómez, S. A. Slutz, Christopher Jennings, D. J. Ampleford et autres

We present experimental results from the first systematic study of performance scaling with drive parameters for a magnetoinertial fusion concept. In magnetized liner inertial fusion experiments, the burn-averaged ion temperature doubles to 3.1 keV and the primary deuterium-deuterium neutron yield increases by …

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Demonstration of thermonuclear conditions in magnetized liner inertial fusion experimentsa)

M. R. Gómez, S. A. Slutz, A. B. Sefkow, Kelly Hahn et autres

The magnetized liner inertial fusion concept [S. A. Slutz et al., Phys.Plasmas 17, 056303 (2010)] utilizes a magnetic field and laser heating to relax the pressure requirements of inertial confinement fusion.The first experiments to test the concept [M.R. Gomez et al., Phys.Rev. …

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Understanding Fuel Magnetization and Mix Using Secondary Nuclear Reactions in Magneto-Inertial Fusion

Paul Schmit, P. F. Knapp, Ole Hansen, M. R. Gómez et autres

Magnetizing the fuel in inertial confinement fusion relaxes ignition requirements by reducing thermal conductivity and changing the physics of burn product confinement. Diagnosing the level of fuel magnetization during burn is critical to understanding target performance in magneto-inertial fusion (MIF) implosions. In …

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Experimental Demonstration of Fusion-Relevant Conditions in Magnetized Liner Inertial Fusion

M. R. Gómez, S. A. Slutz, A. B. Sefkow, D. B. Sinars et autres

This Letter presents results from the first fully integrated experiments testing the magnetized liner inertial fusion concept [S. A. Slutz et al., Phys. Plasmas 17, 056303 (2010)], in which a cylinder of deuterium gas with a preimposed 10 Taxial magnetic field is …

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SPALL AND DYNAMIC YIELDING OF ALUMINUM AND ALUMINUM ALLOYS AT STRAIN RATES OF 3×10[sup 6] s[sup −1]

D. Allen Dalton, Daniel L. Worthington, Paul A. Sherek, Nicholas A. Pedrazas et autres

We have explored the role that grain size, impurity particles and alloying in aluminum play in dynamic yielding and spall fracture at tensile strain rates of ∼3×106 s−1. We achieved these strain rates shocking the aluminum specimens via laser ablation using the …

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Demonstration of Radiation Symmetry Control for Inertial Confinement Fusion in Double Z -Pinch Hohlraums

Roger Alan Vesey, M. E. Cuneo, G. R. Bennett, J. L. Porter et autres

Simulations of a double Z-pinch hohlraum, relevant to the high-yield inertial-confinement-fusion concept, predict that through geometry design the time-integrated P2 Legendre mode drive asymmetry can be systematically controlled from positive to negative coefficient values. Studying capsule elongation, recent experiments on Z confirm …

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Utilization of PVDF Sensors to Determine Impact Damage in Graphite/Epoxy Plates by Acousto-Ultrasonic Technique

I. C. Smith, Suong V. Hoa

The scope of this study into the use of metallized polyvinylidene fluoride (PVDF) foil sensors in the detection of impact damage of graphite/epoxy plates is twofold. First, it establishes that low energy impact damage, undetectable through visual examination and ultrasonic C-scan, can …

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Utilization of PVDF sensors to determine impact damage in graphite/epoxy plates by acousto-ultrasonic technique

I. C. Smith, Suong V. Hoa

A study into the use of metallized polyvinylidene fluoride (PVDF) foil sensors in the detection of impact damage of graphite/epoxy plates.

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Cumulative Fatigue Damage of Axially Loaded Alclad 75S-T6 and Alclad 24S-T3 Aluminum-alloy Sheet

I. C. Smith, Darnley M Howard, F.C. Smith

Note presenting the results of cumulative-fatigue-damage tests made on 607 specimens machined from alclad 75S-T6 aluminum-alloy sheet 0.064 inch thick and 198 specimens of alclad 24S-T3 and alclad 75S-T6 aluminum-alloy sheet 0.032 inch thick. The cumulative-damage ratio was calculated as the sum …