Measurements of Spontaneous Magnetic Fields in Laser-Produced Plasmas

  • Fred Schwirzke


The creation of a dense high-temperature plasma by intense laser pulses is of prime interest to the field of thermonuclear research. Focussed onto a small deuterium-tritium fuel pellet, laser pulses can heat the matter to thermonuclear temperatures within a few nanoseconds releasing nuclear energy before the hot plasma blows apart. The present excitement about laser induced fusion is based on the results of extensive computer simulation experiments. The concept requires a sequence of time-tailored laser pulses to be focussed evenly onto a small pellet of deuterium-tritium ice. The successive ablation of outer layers of material produces a sequence of shock waves which converge space and time-wise towards the center of the sphere. These shock waves compress the core of the pellet by a factor of 103 to 104 above solid state density and heat the matter to thermonuclear temperature. In this manner a high energy state of matter can be created and investigated which otherwise exists only in the inner core of stars.


Focal Spot Axial Distance Laser Plasma Background Plasma Radial Temperature Gradient 
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  1. 1.
    F. Schwirzke and L. L. McKee, Proceedings of the Fifth European Conference on Controlled Fusion and Plasma Physics, Grenoble, France, Vol. I, 63 (1972).Google Scholar
  2. 2.
    R. S. Bird, L. L. McKee, F. Schwirzke, and A. W. Cooper, Phys. Rev. A 7, 1328 (1973).ADSCrossRefGoogle Scholar
  3. 3.
    V. N. Korobkin and R. V. Serov, Zh. Eksp. Teor. Fiz. Pis’ma Red. 4,103 (1966) [Sov. Phys. JETP Lett. 4, 70 (1966)].ADSGoogle Scholar
  4. 4.
    G. A. Askar’yan, M. S. Rabinovich, A. D. Smirnova, and V. B. Studenov, Zh. Eksp. Teor. Fiz. Pis’ma Red. 5, 116 (1967) [Sov. Phys. JETP Lett. 5, 93 (1967)].ADSGoogle Scholar
  5. 5.
    J. A. Stamper, K. Papadopoulos, R. N. Sudan, S. O. Dean, E. A. McLean, and J. M. Dawson, Phys. Rev. Lett. 26, 1012.Google Scholar
  6. 6.
    T. G. Cowling, Monthly Not. Roy. Astron. Soc. 94, 39 (1934).Google Scholar
  7. 7.
    W. M. Elsasser, Phys. Rev. 69, 106 (1946).MathSciNetADSMATHCrossRefGoogle Scholar
  8. 8.
    W. M. Elsasser, Rev. Mod. Phys. 28, 135 (1956).MathSciNetADSCrossRefGoogle Scholar
  9. 9.
    L. Biermann, Z. Naturforschg., 5a, 65 (1950).MathSciNetADSMATHGoogle Scholar
  10. 10.
    M. Steenbeck, F. Krause, and K. H. Radler, Z. Naturforschg, 21a, 369 (1966).ADSGoogle Scholar
  11. 11.
    E. N. Parker, Astrophys. J. 162, 665 (1970).ADSCrossRefGoogle Scholar
  12. 12.
    T. P. Wright and M. M. Widner, Bull. Am. Phys. Soc. 17, 1027 (1972).Google Scholar
  13. 13.
    J. B. Case, J. L. LeBlanc, and J. R. Wilson, Phys. Fluids 16, 1142 (1973).ADSCrossRefGoogle Scholar
  14. 14.
    F. Floux, J. F. Benard, D. Cognard and A. Saleres, in Laser Interaction and Related Plasma Phenomena, Vol. 2, eds. H. Schwarz and H. Hora ( Plenum Press, New York 1972 ) p. 409.Google Scholar
  15. 15.
    L. J. Davis, Self-Generated Magnetic Fields Produced by Laser Bombardment of a Solid Target, MS Thesis, Naval Postgraduate School, 1971.Google Scholar
  16. 16.
    L. L. McKee, An Investigation of the Self-Generated Magnetic Fields Associated with a Laser-Produced Plasma, Ph.D. Thesis, Naval Postgraduate School, 1972.Google Scholar
  17. 17.
    R. S. Bird, The Pressure Dependence of Spontaneous Magnetic Fields in Laser Produced Plasmas, Ph.D. Thesis, Naval Postgraduate School, 1973.Google Scholar
  18. 18.
    J. F. Ready, Effects of High-Power Laser Radiation (Academic Press, Inc., New York, 1971 ), p. 165.Google Scholar
  19. 19.
    S. O. Dean, E. A. McLean, J. A. Stamper, and H. R. Griem, Phys. Rev. Lett. 27, 487 (1971).ADSCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • Fred Schwirzke
    • 1
  1. 1.Naval Postgraduate SchoolMontereyUSA

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