Gas breakdown near solid targets by pulsed CO2-laser radiation

Autor: A I Barchukov, S.M. Metev, Alexander S. Silenok, Vitali I. Konov, F. V. Bunkin, N I Chapliev, V. P. Ageev
Rok vydání: 1977
Předmět:
Zdroj: Soviet Physics Journal. 20:1422-1443
ISSN: 1573-9228
0038-5697
DOI: 10.1007/bf00892964
Popis: In conclusion, let us note some important problems whose solution, in our opinion, will make for a better undertanding of the physical mechanisms of processes occuring in a low-threshold breakdown of gases near solid targets. First is the systematization of data on threshold-breakdown intensities (dependence of Sbr on the area of the irradiation spot and laser-pulse duration over wide ranges of these quantities, on the pressure and kind of gas surrounding the target, and on the radiation wavelength). Analysis of such data would make it possible to construct a more orderly theory of the process. Also of great interest is the transfer of heat to a solid target from the plasma of the low-threshold breakdown of a gas and from the shock waves propagating in the plasma. It is advisable to carry out numerical calculations on the gasdynamic processes occurring near a solid target under irradiation by a pulsed CO2 laser, with account for the counterpressure of the ambient gas and for various regimes breakdown-plasma propagation with subsequent comparison of these data with experimental results.
Databáze: OpenAIRE
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