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

Abstract

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.

Authors:
;  [1]; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [2]
  1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  2. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
Publication Date:
OSTI Identifier:
21562066
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevLett.106.085003; (c) 2011 American Institute of Physics; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Kline, J L, Kyrala, G A, 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, and Divol, L. Observation of High Soft X-Ray Drive in Large-Scale Hohlraums at the National Ignition Facility. United States: N. p., 2011. Web. doi:10.1103/PHYSREVLETT.106.085003.
Kline, J L, Kyrala, G A, 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. Observation of High Soft X-Ray Drive in Large-Scale Hohlraums at the National Ignition Facility. United States. https://doi.org/10.1103/PHYSREVLETT.106.085003
Kline, J L, Kyrala, G A, 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, and Divol, L. 2011. "Observation of High Soft X-Ray Drive in Large-Scale Hohlraums at the National Ignition Facility". United States. https://doi.org/10.1103/PHYSREVLETT.106.085003.
@article{osti_21562066,
title = {Observation of High Soft X-Ray Drive in Large-Scale Hohlraums at the National Ignition Facility},
author = {Kline, J L and Kyrala, G A and Glenzer, S H and Suter, L J and Widmann, K and Callahan, D A and Dixit, S N and Thomas, C A and Hinkel, D E and Williams, E A and Celeste, J and Dewald, E and Hsing, W W and Warrick, A and Atherton, J and Azevedo, S and Beeler, R and Berger, R and Conder, A and Divol, L},
abstractNote = {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.},
doi = {10.1103/PHYSREVLETT.106.085003},
url = {https://www.osti.gov/biblio/21562066}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 8,
volume = 106,
place = {United States},
year = {Fri Feb 25 00:00:00 EST 2011},
month = {Fri Feb 25 00:00:00 EST 2011}
}