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Investigation of Plasma Parameters at the Spherical Heating of the Isolated Solid Target by High-Power Laser Radiation

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Laser Interaction and Related Plasma Phenomena

Abstract

The results of the investigation of high-temperature non-stationary plasma produced at the spherical heating of the ball-shaped (CD2)n target by high-power irradiation of the 9-channel laser setup are reported. It had been found that the fraction of absorbed energy reached 70% of the incident radiation at flux densities ~ 1014 – 1015 W cm−2. About 10–25% of the energy absorbed in the target is reemitted in the X-ray spectral range, while the fraction of energy reflected from plasma was not greater than 10%. The study of gas-dynamic parameters of the hot plasma “corona” made it possible to measure the pressure in the dense plasma core. The pressure was about 106 – 107 atm at the flux density of about 1015 W cm−2. Experimental data on measuring density, velocity and pressure in the “corona” region made it possible to conclude about experimental realization of the compression value of the order of 30.

Neutron yield of about 107 neutrons per pulse was registered. Time of flight measurements of the neutron radiation indicated thermonuclear character of neutrons emitted at spherical heating of a target.

Paper scheduled for the Third Workshop on “Laser Interaction and Related Plasma Phenomena” held at Rensselaer Polytechnic Institute, Troy, New York, August 13–17, 1973, but not presented due to unforeseen circumstances preventing the authors from attending.

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Authors and Affiliations

  1. P. N. Lebedev Physical Institute, Moscow, USSR

    N. G. Basov, E. G. Gamaly, O. N. Krokhin, Yu. A. Mikhailov, G. V. Sklizkov & S. I. Fedotov

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  1. N. G. Basov
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  2. E. G. Gamaly
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  3. O. N. Krokhin
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  4. Yu. A. Mikhailov
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  5. G. V. Sklizkov
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  6. S. I. Fedotov
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Editors and Affiliations

  1. Rensselaer Polytechnic Institute, USA

    Helmut J. Schwarz (Professor of Physics) & Heinrich Hora (Adjunct Associate Professor of Physics) (Professor of Physics) &  (Adjunct Associate Professor of Physics)

  2. Max-Planck-Institut für Plasmaphysik, Garching, Germany

    Heinrich Hora (Adjunct Associate Professor of Physics) (Adjunct Associate Professor of Physics)

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© 1974 Plenum Press, New York

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Basov, N.G., Gamaly, E.G., Krokhin, O.N., Mikhailov, Y.A., Sklizkov, G.V., Fedotov, S.I. (1974). Investigation of Plasma Parameters at the Spherical Heating of the Isolated Solid Target by High-Power Laser Radiation. In: Schwarz, H.J., Hora, H. (eds) Laser Interaction and Related Plasma Phenomena. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-8416-8_9

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  • DOI: https://doi.org/10.1007/978-1-4684-8416-8_9

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4684-8418-2

  • Online ISBN: 978-1-4684-8416-8

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