Observation of high soft x-ray drive in large-scale hohlraums at the National Ignition Facility Page: 3 of 16
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Observation of high soft x-ray drive in large-scale hohlraums at the National
J. L. Kline, S. H. Glenzer,2 R. E. Olson,3 L. J. Suter2, K. Widmann,2 D. A. Callahan,2
S. N. Dixit,2 C. A. Thomas,2 D. E. Hinkel,2 E. A. Williams,2 A. S. Moore,4 J. Celeste,2
E. Dewald,2 W. W. Hsing,2 A. Warrick,2 J. Atherton,2 S. Azevedo,2 R. Beeler,2 R. Berger.2
A. Conder,2 L. Divol,2 C. A. Haynam,2 D. H. Kalantar,2 R. Kauffman,2 G. A. Kyrala,
J. Kilkenny,5 J. Liebman,2 S. Le Pape,2 D. Larson,2 N. B. Meezan,2 P. Michel,2 J. Moody,2
M. D. Rosen,2 M. B. Schneider.2 B. Van Wontergheman,2 R. J. Wallace,2 B. K. Young,
O. L. Landen,2 and B. J. MacGowan2
Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
2Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
3Sandia National Laboratory, Albuquerque, NM, 87185, USA
4 Atomic Weapons Establishment, Aldermaston, RG74PR, UK
5General Atomics, San Diego, CA, 92121, USA
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
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 in
that determining the radiation drive.
PACS: 52.57.-z, 52.38.Ph, 52.50.Jm
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Kline, J L; Glenzer, S H; Olson, R E; Suter, L J; Widmann, K; Callahan, D A et al. Observation of high soft x-ray drive in large-scale hohlraums at the National Ignition Facility, article, April 22, 2010; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc869639/m1/3/: accessed November 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.