Nonsinusoidal Nozzle Oscillation Functions for Generating Thick-Liquid Pockets for Heavy-Ion Fusion Chambers

Oscillating thick-liquid jets have been proposed to create pockets to provide neutron shielding and droplet clearing at high repetition rate for heavy-ion inertial fusion energy. A procedure is introduced to compute nonsinusoidal nozzle oscillation functions based on the desired pocket geometry at t...

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Bibliographic Details
Published inFusion science and technology Vol. 45; no. 4; pp. 573 - 582
Main Authors Senn, Stephan M., Pemberton, Steven J., Peterson, Per F.
Format Journal Article
LanguageEnglish
Published United States Taylor & Francis 01.06.2004
Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLLISIONS
DISTRIBUTION
EQUATIONS OF MOTION
GEOMETRY
HEAVY IONS
ICF DEVICES
INERTIAL CONFINEMENT
INERTIAL FUSION DRIVERS
LIQUIDS
NEUTRONS
OSCILLATIONS
SHIELDING
THERMONUCLEAR IGNITION
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Summary:Oscillating thick-liquid jets have been proposed to create pockets to provide neutron shielding and droplet clearing at high repetition rate for heavy-ion inertial fusion energy. A procedure is introduced to compute nonsinusoidal nozzle oscillation functions based on the desired pocket geometry at the time of target ignition. The primary goals for creating optimum pocket geometries are discussed, such as complete pocket closing at time of target ignition, avoidance of liquid-liquid collisions that could lead to jetting into the target region, maintenance of a uniform void distribution to avoid the propagation of strong shocks toward the injection nozzles, and consideration of mechanical limitations on the maximum nozzle acceleration. The equation of motion for a horizontally translating nozzle is derived that generates the desired pocket shape. Numerical results are compared to a sinusoidal oscillation function. The same procedure had been applied to a rotating nozzle.
ISSN:1536-1055
1943-7641
DOI:10.13182/FST04-A532