Observation of High Soft X-Ray Drive in Large-Scale Hohlraums at the National Ignition Facility

Journal Article · Fri Feb 25 00:00:00 EST 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.085003· OSTI ID:21562066

Kline, J L; Kyrala, G A ^[1]; Glenzer, S H; Suter, L J; Widmann, K; Callahan, D A; Dixit, S N; Thomas, C A; Hinkel, D E; Williams, E A; Celeste, J; Dewald, E; Hsing, W W; Warrick, A; Atherton, J; Azevedo, S; Beeler, R; Berger, R; Conder, A; Divol, L ^[2]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

The first soft x-ray radiation flux measurements from hohlraums using both a 96 and a 192 beam configuration at the National Ignition Facility have shown high x-ray conversion efficiencies of {approx}85%-90%. These experiments employed gold vacuum hohlraums, 6.4 mm long and 3.55 mm in diameter, heated with laser energies between 150-635 kJ. The hohlraums reached radiation temperatures of up to 340 eV. These hohlraums for the first time reached coronal plasma conditions sufficient for two-electron processes and coronal heat conduction to be important for determining the radiation drive.

• OSTI ID: 21562066
• Journal Information: Physical Review Letters, Vol. 106, Issue 8; Other Information: DOI: 10.1103/PhysRevLett.106.085003; (c) 2011 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAMS
EFFICIENCY
ELECTRONS
EV RANGE 100-1000
GOLD
LASERS
PLASMA
RADIATION FLUX
SOFT X RADIATION
THERMAL CONDUCTION
US NATIONAL IGNITION FACILITY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
ENERGY TRANSFER
EV RANGE
FERMIONS
HEAT TRANSFER
IONIZING RADIATIONS
LEPTONS
METALS
RADIATIONS
TRANSITION ELEMENTS
X RADIATION