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Powerful 12-Channel Laser Installation “Delfin” for Spherical Heating of Thermonuclear Targets

  • N. G. Basov
  • O. N. Krokhin
  • Yu. A. Mikhailov
  • G. V. Sklizkov
  • S. I. Fedotov

Abstract

A 12-beam powerful laser installation “Delfin” for high-temperature spherical heating of thermonuclear targets is described. The installation consists of a Nd-Iaser (ultimate energy about 10kJ, pulse duration 1 ns and 0.1 ns, and divergence of 5 ×10-4 rad), target chamber for laser plasma interaction research, and a set of diagnostic systems to study laser and plasma parameters. The optical scheme and constructive peculiarities of the laser system are under consideration. Analysis of the focusing scheme is performed and a description of the focusing system of “DELFIN, which makes it possible to obtain a high degree symmetry of spherical illumination of the target, is given. Expected flux density at the target is 1015 W/cm2, while the laser power is about 10 TW. The theoretical analysis of ultimate possibilities of concentration of the multi-beam laser radiation in the spherical target has been performed, when the really attainable radiation parameters have been taken into account. For a given target structure the ultimate energy, which can be focused in the target, seems to occur. The theoretical estimation has resulted in a successive-parallel scheme of the powerful laser, which is optimal. This scheme has been used in “DELFIN.”

Keywords

Laser Energy Gain Coefficient Ampl Ification Target Irradiation Target Chamber 
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.

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Copyright information

© Plenum Press, New York 1977

Authors and Affiliations

  • N. G. Basov
    • 1
  • O. N. Krokhin
    • 1
  • Yu. A. Mikhailov
    • 1
  • G. V. Sklizkov
    • 1
  • S. I. Fedotov
    • 1
  1. 1.P.N. Lebedev Physical Institute of Academy of Sciences of the USSRMoscowUSSR

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