Foam-lined hohlraum, inertial confinement fusion experiments on the National Ignition Facility.

Moore, A S; Meezan, N B; Milovich, J; Johnson, S; Heredia, R; Baumann, T F; Biener, M; Bhandarkar, S D; Chen, H; Divol, L; Izumi, N; Nikroo, A; Baker, K; Jones, O; Landen, O L; Hsing, W W; Moody, J D; Thomas, C A; Lahmann, B; Williams, J; Alfonso, N; Schoff, M E

Moore, A S; Meezan, N B; Milovich, J; Johnson, S; Heredia, R; Baumann, T F; Biener, M; Bhandarkar, S D; Chen, H; Divol, L; Izumi, N; Nikroo, A; Baker, K; Jones, O; Landen, O L; Hsing, W W; Moody, J D; Thomas, C A; Lahmann, B; Williams, J; Alfonso, N; Schoff, M E.

Afiliación

Moore AS; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Meezan NB; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Milovich J; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Johnson S; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Heredia R; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Baumann TF; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Biener M; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Bhandarkar SD; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Chen H; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Divol L; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Izumi N; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Nikroo A; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Baker K; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Jones O; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Landen OL; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Hsing WW; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Moody JD; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.
Thomas CA; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
Lahmann B; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Williams J; General Atomics, San Diego, California 92121, USA.
Alfonso N; General Atomics, San Diego, California 92121, USA.
Schoff ME; General Atomics, San Diego, California 92121, USA.

Phys Rev E ; 102(5-1): 051201, 2020 Nov.

Article en En | MEDLINE | ID: mdl-33327093

ABSTRACT

ABSTRACT

Experiments on the National Ignition Facility (NIF) to study hohlraums lined with a 20-mg/cc 400-µm-thick Ta_{2}O_{5} aerogel at full scale (hohlraum diameter = 6.72 mm) are reported. Driven with a 1.6-MJ, 450-TW laser pulse, the performance of the foam liner is diagnosed using implosion hot-spot symmetry measurements of the high-density carbon (HDC) capsule and measurement of inner beam propagation through a thin-wall 8-µm Au window in the hohlraum. Results show an improved capsule performance due to laser energy deposition further inside the hohlraum, leading to a modest increase in x-ray drive and reduced preheat due to changes in the x-ray spectrum when the foam liner is included. In addition, the outer cone bubble uniformity is improved, but the predicted improvement in inner beam propagation to improve symmetry control is not realized for this foam thickness and density.

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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev E Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos

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