Study on Compression of ICF Fuel in Rocket Model
American Journal of Physics and Applications
Volume 5, Issue 6, November 2017, Pages: 95-98
Received: Aug. 21, 2017; Accepted: Sep. 11, 2017; Published: Oct. 20, 2017
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Author
Vijay Kumar Jha, Central Department of Physics, Tribhuvan University, Kathmandu, Nepal; Amrit Campus, Tribhuvan University, Thamel, Kathmandu, Nepal
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Abstract
Compression of Inertial Confinement Fusion (ICF) fuel as required by Lawson Criterion has been of immense value in ICF studies. In this work, the order of compression has been studied on Rocket Model because a high-order reaction force responsible for compression may be seen to act as a rocket motion. It has been seen that the order of compression of lighter fuel such as D-T may be more effective if irradiated by high power Nd laser. The shocks produced as the reaction (Rocket effect) to the surface ablation generated by pulsed laser beams, compress the fuel which is estimated to be effective when the ratio of initial mass to the accelerated one is of the order of 5. The maximum achievable compression by a single strong shock is not more than 4 for a monatomic gas. For weak coalescing shocks to achieve adiabatic compression, the ablation efficiency is found to be maximum when target velocity equals nearly twice the ablation velocity. In such a case, the implosion efficiency of Rocket Model is found to be about 67 percent; neglecting heat loss.
Keywords
Inertial Confinement Fusion (ICF), Lawson Criterian, Compression, Ablation, Implosion Efficiency, Rocket Model, Shock Wave, Mach Number, Fermi Degenerate Adiabat
To cite this article
Vijay Kumar Jha, Study on Compression of ICF Fuel in Rocket Model, American Journal of Physics and Applications. Vol. 5, No. 6, 2017, pp. 95-98. doi: 10.11648/j.ajpa.20170506.14
Copyright
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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