Journal
NUCLEAR FUSION
Volume 63, Issue 1, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1741-4326/aca685
Keywords
inertial confinement fusion; laser irradiation; spherical design
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A new class of beam configurations based on spherical t-designs is proposed for symmetric-direct-drive inertial confinement fusion laser systems. These configurations eliminate spherical-harmonic intensity modulations and provide symmetric intensity patterns on the target surface.
A new class of beam configurations is proposed for symmetric-direct-drive inertial confinement fusion laser systems. These configurations are based on spherical t-designs that are studied in spherical design theory in mathematics (Delsarte et al 1977 Geom. Dedicata 6 363). Employing t-design configurations offers elimination of spherical-harmonic intensity modulations for modes l ? t. Additionally, these configurations provide fast decay of intensity nonuniformities with increasing number of beams and symmetric intensity patterns on the surface of the target. Methods developed in spherical design theory offer a convenient, systematic way of obtaining beam configurations for an arbitrary number of beams.
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