Development of Cryogenic Targets for Laser Fusion

  • E. R. Grilly
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 23)


In the development of targets for laser fusion, there is considerable interest in producing a uniform spherical shell of liquid or solid deuterium-tritium mixture (1:1 ratio). It is felt that fuel in this form, compressed and heated by laser beams, would give optimum energy yield [1,2]. Fabrication of this target begins with selection of glass microballoons, 80 to 100 μm in diameter and 1 to 2 μm in wall thickness for uniformity in diameter and wall. These are filled by diffusion at 400°C and high pressure and rapidly cooled to room temperature to entrap the gas. Various fills have been used: D2, T2, and D—T, ending with 50 to 190 atm at 300 K, which result in upper condensation temperatures of 29 to 38 K. If all the fuel is condensed uniformly on the inner surface of the container, the solid layers are calculated to be 0.5 to 2.1 μm thick.


Laser Fusion Thermocouple Temperature Fiber Result Cryogenic Engineer Cryogenic Target 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    R. J. Mason and R. L. Morse, Phys. Fluids 18: 814 (1975).CrossRefGoogle Scholar
  2. 2.
    R. J. Mason, Nucl. Fusion 15 (6): 1031 (1975).CrossRefGoogle Scholar
  3. 3.
    E. R. Grilly, Rev. Sci. Instrum. 48 (2): 148 (1977).CrossRefGoogle Scholar
  4. 4.
    T. M. Henderson, R. B. Jacobs, D. E. Solomon, and G. H. Wuttke, in: Advances in Cryogenic Engineering, Vol. 21, Plenum Press, New York (1976), p. 455.Google Scholar
  5. 5.
    T. M. Henderson, D. E. Solomon, R. B. Jacobs, G. H. Wuttke, D. L. Musinski, and R. J. Simms, paper presented at 4th Workshop on Laser Interaction and Related Plasma Phenomena RPI, Troy, New York, November 8–12, 1976.Google Scholar
  6. 6.
    T. M. Henderson, R. B. Jacobs, D. L. Musinski, R. J. Simms, and G. H. Wuttke, in: Advances in Cryogenic Engineering, Vol. 23, Plenum Press, New York (1978), p. 690.Google Scholar
  7. 7.
    G. E. Childs, L. J. Ericks, and R. L. Powell, NBS Monograph 131 (September 1973).Google Scholar

Copyright information

© Plenum Press · New York and London 1978

Authors and Affiliations

  • E. R. Grilly
    • 1
  1. 1.Los Alamos Scientific LaboratoryUniversity of CaliforniaLos AlamosUSA

Personalised recommendations