Journal
PHYSICS OF PLASMAS
Volume 17, Issue 2, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.3309481
Keywords
explosions; fusion reactor ignition; plasma inertial confinement; plasma instability; plasma production by laser; plasma temperature; plasmons
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Funding
- U. S. Department of Energy Office of Inertial Confinement Fusion [DE-FC52-08NA28302]
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For the first time a burst of suprathermal electrons is observed from the exploding laser-entrance-hole window of gas-filled Hohlraums driven with 13.5 kJ of 351 nm laser light. The two-plasmon-decay instability appears to produce up to 20 J of hot electrons with T-hot similar to 75 keV at early times and has a sharp laser-intensity threshold between 0.3 and 0.5x10(15) W/cm(2). The observed threshold can be exploited to mitigate preheat by window hot electrons in ignition Hohlraums for the National Ignition Facility and achieve high-density, high-pressure conditions in indirect drive implosions.
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