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Single-event high-compression inertial confinement fusion at low temperatures compared with two-step fast ignitor

Published online by Cambridge University Press:  09 September 2003

H. HORA ,
G. H. MILEY ,
F. OSMAN ,
P. EVANS ,
P. TOUPS ,
K. MIMA ,
M. MURAKAMI ,
S. NAKAI ,
K. NISHIHARA  and
C. YAMANAKA
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H. HORA
Affiliation:
Department of Theoretical Physics, University of New South Wales, Sydney 2052, Australia
G. H. MILEY
Affiliation:
Fusion Studies Laboratory, University of Illinois, Urbana 61 801, USA
F. OSMAN
Affiliation:
School of Quantitative Methods & Mathematical Sciences, University of Western Sydney, Locked Bag 1797, Penrith South DC 1797, Australia
P. EVANS
Affiliation:
School of Quantitative Methods & Mathematical Sciences, University of Western Sydney, Locked Bag 1797, Penrith South DC 1797, Australia
P. TOUPS
Affiliation:
School of Quantitative Methods & Mathematical Sciences, University of Western Sydney, Locked Bag 1797, Penrith South DC 1797, Australia
K. MIMA
Affiliation:
Institute of Laser Engineering, Osaka University, Suita 565, Osaka, Japan
M. MURAKAMI
Affiliation:
Institute of Laser Engineering, Osaka University, Suita 565, Osaka, Japan
S. NAKAI
Affiliation:
Institute of Laser Engineering, Osaka University, Suita 565, Osaka, Japan
K. NISHIHARA
Affiliation:
Institute of Laser Engineering, Osaka University, Suita 565, Osaka, Japan
C. YAMANAKA
Affiliation:
Institute of Laser Engineering, Osaka University, Suita 565, Osaka, Japan
T. YAMANAKA
Affiliation:
Institute of Laser Engineering, Osaka University, Suita 565, Osaka, Japan
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Abstract

Compression of plasmas with laser pulses in the 10-kJ range produced densities in the range of 1000 times that of the solid state, where however the temperatures within a few hundred eV were rather low. This induced the fast ignitor scheme for central or peripheral deposition of some 10-kJ ps laser pulses on conventional $n_{\rm s}$-precompressed DT plasma of 3000 times solid-state density. We present results where the ps ignition is avoided and only a single-event conventional compression is used. Following our computations of volume ignition and the excellent agreement with measured highest fusion gains of volume compression, we found conditions where compression to 5000 times that of the solid state and by using laser pulses of 10 MJ produce volume ignition with temperatures between 400 and 800 eV only for high-gain volume ignition.

Type
Papers
Information
Journal of Plasma Physics , Volume 69 , Issue 5 , October 2003 , pp. 413 - 429
Copyright
© 2003 Cambridge University Press

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