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Physics of Plasmas / Volume 9 / Issue 7 / ARTICLES / Inertially Confined Plasmas, Dense Plasmas, Equations of State

Phys. Plasmas 9, 3108 (2002); http://dx.doi.org/10.1063/1.1487382 (13 pages)

Detailed study of nuclear fusion from femtosecond laser-driven explosions of deuterium clusters

J. Zweiback1, T. E. Cowan1, J. H. Hartley1, R. Howell1, K. B. Wharton1, J. K. Crane1, V. P. Yanovsky1, G. Hays1, R. A. Smith2, and T. Ditmire1,3

1Lawrence Livermore National Laboratory, L-477, Livermore, California 94550
2Imperial College of Science Technology and Medicine, London SW7 2BZ, United Kingdom
3Department of Physics, University of Texas, Austin, Texas 78712

(Received 26 November 2001; accepted 25 April 2002)

Recent experiments on the interaction of intense, ultrafast pulses with large van der Waals bonded clusters have shown that these clusters can explode with sufficient kinetic energy to drive nuclear fusion. Irradiating deuterium clusters with a 35 fs laser pulse, it is found that the fusion neutron yield is strongly dependent on such factors as cluster size, laser focal geometry, and deuterium gas jet parameters. Neutron yield is shown to be limited by laser propagation effects as the pulse traverses the gas plume. From the experiments it is possible to get a detailed understanding of how the laser deposits its energy and heats the deuterium cluster plasma. The experiments are compared with simulations. © 2002 American Institute of Physics.

© 2002 American Institute of Physics

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KEYWORDS and PACS

Keywords

deuterium, atomic clusters, laser fusion, explosions, plasma heating by laser

PACS

  • 28.52.Cx

    Fueling, heating and ignition

  • 52.50.Jm

    Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.)

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.1487382

PUBLICATION DATA

ISSN

1070-664X (print)  
1089-7674 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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