Study on Compression of ICF Fuel in Rocket Model

Vijay Kumar Jha

doi:doi:10.11648/j.ajpa.20170506.14

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Study on Compression of ICF Fuel in Rocket Model

Vijay Kumar Jha

Received: 21 August 2017 Accepted: 11 September 2017 Published: 20 October 2017

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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.

DOI	10.11648/j.ajpa.20170506.14
Published in	American Journal of Physics and Applications (Volume 5, Issue 6, November 2017)
Page(s)	95-98
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Inertial Confinement Fusion (ICF), Lawson Criterian, Compression, Ablation, Implosion Efficiency, Rocket Model, Shock Wave, Mach Number, Fermi Degenerate Adiabat

References

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[6]	R. S. Craxton, K. S. Anderson, T. R. Boehly, V. N. Goncharov, D. R. Harding, Physics of Plasmas 22, 110501 (2015).
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[8]	B. H. Ripin, R. Decoste, S. P. Obenschein, S. E. Bonder, E. A. McLean, F. C. Young, R. R. Whitlock, C. M. Armstrong, J. Grun, J. A. Stamper, S. H. Gold D. J. Nagel, R. H. Lehmberg and J. M. McMahon, Physics Fluids, 23, 1012 (1980).
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Vijay Kumar Jha. (2017). Study on Compression of ICF Fuel in Rocket Model. American Journal of Physics and Applications, 5(6), 95-98. https://doi.org/10.11648/j.ajpa.20170506.14

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ACS Style

Vijay Kumar Jha. Study on Compression of ICF Fuel in Rocket Model. Am. J. Phys. Appl. 2017, 5(6), 95-98. doi: 10.11648/j.ajpa.20170506.14

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AMA Style

Vijay Kumar Jha. Study on Compression of ICF Fuel in Rocket Model. Am J Phys Appl. 2017;5(6):95-98. doi: 10.11648/j.ajpa.20170506.14

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@article{10.11648/j.ajpa.20170506.14,
  author = {Vijay Kumar Jha},
  title = {Study on Compression of ICF Fuel in Rocket Model},
  journal = {American Journal of Physics and Applications},
  volume = {5},
  number = {6},
  pages = {95-98},
  doi = {10.11648/j.ajpa.20170506.14},
  url = {https://doi.org/10.11648/j.ajpa.20170506.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpa.20170506.14},
  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.},
 year = {2017}
}

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TY  - JOUR
T1  - Study on Compression of ICF Fuel in Rocket Model
AU  - Vijay Kumar Jha
Y1  - 2017/10/20
PY  - 2017
N1  - https://doi.org/10.11648/j.ajpa.20170506.14
DO  - 10.11648/j.ajpa.20170506.14
T2  - American Journal of Physics and Applications
JF  - American Journal of Physics and Applications
JO  - American Journal of Physics and Applications
SP  - 95
EP  - 98
PB  - Science Publishing Group
SN  - 2330-4308
UR  - https://doi.org/10.11648/j.ajpa.20170506.14
AB  - 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.
VL  - 5
IS  - 6
ER  -

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Author Information

Vijay Kumar Jha

Central Department of Physics, Tribhuvan University, Kathmandu, Nepal; Amrit Campus, Tribhuvan University, Thamel, Kathmandu, Nepal

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APA Style

Vijay Kumar Jha. (2017). Study on Compression of ICF Fuel in Rocket Model. American Journal of Physics and Applications, 5(6), 95-98. https://doi.org/10.11648/j.ajpa.20170506.14

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ACS Style

Vijay Kumar Jha. Study on Compression of ICF Fuel in Rocket Model. Am. J. Phys. Appl. 2017, 5(6), 95-98. doi: 10.11648/j.ajpa.20170506.14

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AMA Style

Vijay Kumar Jha. Study on Compression of ICF Fuel in Rocket Model. Am J Phys Appl. 2017;5(6):95-98. doi: 10.11648/j.ajpa.20170506.14

Copy | Download

@article{10.11648/j.ajpa.20170506.14,
  author = {Vijay Kumar Jha},
  title = {Study on Compression of ICF Fuel in Rocket Model},
  journal = {American Journal of Physics and Applications},
  volume = {5},
  number = {6},
  pages = {95-98},
  doi = {10.11648/j.ajpa.20170506.14},
  url = {https://doi.org/10.11648/j.ajpa.20170506.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpa.20170506.14},
  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.},
 year = {2017}
}

Copy | Download

TY  - JOUR
T1  - Study on Compression of ICF Fuel in Rocket Model
AU  - Vijay Kumar Jha
Y1  - 2017/10/20
PY  - 2017
N1  - https://doi.org/10.11648/j.ajpa.20170506.14
DO  - 10.11648/j.ajpa.20170506.14
T2  - American Journal of Physics and Applications
JF  - American Journal of Physics and Applications
JO  - American Journal of Physics and Applications
SP  - 95
EP  - 98
PB  - Science Publishing Group
SN  - 2330-4308
UR  - https://doi.org/10.11648/j.ajpa.20170506.14
AB  - 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.
VL  - 5
IS  - 6
ER  -

Copy | Download