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This article is cited in 4 scientific papers (total in 4 papers)
Investigation of gasdynamic processes and recoil impulse produced by optical breakdown of air near a target surface by radiation of an electron-beam-controlled CO$_2$ laser
V. A. Boĭko, V. A. Danilychev, V. D. Zvorykin, I. V. Kholin, A. Yu. Chugunov
Abstract:
An experimental investigation was made of gasdynamic processes resulting from the action of high-power (10$^9$ W) radiation of an electron-beam-controlled CO$_2$ laser on a metal target. The large area of the resultant optical breakdown (up to 27 cm$^2$), which appeared near the target surface, and the short duration of the laser pulses ($\tau_{1/2}=120$ nsec) made it possible to establish nearly one-dimensional gasdynamic motion. The development of a plasma jet under these conditions could be described by the model of a strong planar explosion. The breakdown threshold of air $q_{\text{th}}\lesssim5\times10^7$ W/cm$^2$ decreased under the action of the radiation emitted from the plasma jet. The velocity of propagation of a wave of absorption of the laser radiation differed from the theoretical dependence predicted for an optical detonation wave. The ratio of the recoil impulse to the energy, 12.6 dyn$\cdot$sec$\cdot$ J$^{-1}$, was measured and it was found that high values of the impulse could be obtained in large focusing spots.
Received: 02.02.1976
Citation:
V. A. Boǐko, V. A. Danilychev, V. D. Zvorykin, I. V. Kholin, A. Yu. Chugunov, “Investigation of gasdynamic processes and recoil impulse produced by optical breakdown of air near a target surface by radiation of an electron-beam-controlled CO$_2$ laser”, Kvantovaya Elektronika, 3:9 (1976), 1955–1961 [Sov J Quantum Electron, 6:9 (1976), 1065–1068]
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https://www.mathnet.ru/eng/qe11840 https://www.mathnet.ru/eng/qe/v3/i9/p1955
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