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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 20, Iss. 1 — Jan. 1, 2003
  • pp: 113–117

Investigation of fusion yield from exploding deuterium-cluster plasmas produced by 100-TW laser pulses

Kirk W. Madison, Pravesh K. Patel, Matt Allen, Dwight Price, and Todd Ditmire  »View Author Affiliations

JOSA B, Vol. 20, Issue 1, pp. 113-117 (2003)

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When clusters of deuterium are irradiated with an intense, ultrafast laser pulse, the clusters explode, generating ions with kinetic energies high enough to produce nuclear-fusion events. Here we present experimental measurements of the dependence of the fusion yield of an exploding deuterium-cluster plasma on pulse energy up to the 10-J level for incident pulse durations of 100 fs and 1 ps. These energies correspond to peak vacuum intensities of 2×1020 and 2×1019 W/cm2, respectively. We also present measurements of the resulting plasma ion spectra that possess features indicative of a Coulomb explosion and discuss the yield scaling and its relation to previous findings based on the differences in laser focal geometry and pulse duration.

© 2003 Optical Society of America

OCIS Codes
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7120) Ultrafast optics : Ultrafast phenomena
(350.2660) Other areas of optics : Fusion

Kirk W. Madison, Pravesh K. Patel, Matt Allen, Dwight Price, and Todd Ditmire, "Investigation of fusion yield from exploding deuterium-cluster plasmas produced by 100-TW laser pulses," J. Opt. Soc. Am. B 20, 113-117 (2003)

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