Laser interferometer for measuring the mass velocity of condensed substances in shock-wave experiments on the TWAC-ITEP proton-radiographic facility

Author: Kuznetsov A.   Kolesnikov S.   Golubev A.   Gubskii K.   Dudin S.   Kantsyrev A.   Turtikov V.   Utkin A.   Yakushev V.  

Publisher: MAIK Nauka/Interperiodica

ISSN: 0020-4412

Source: Instruments and Experimental Techniques, Vol.54, Iss.3, 2011-05, pp. : 400-408

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Abstract

The results of development of a laser interferometer designed for measuring the mass velocity of condensed substances in shock-wave experiments in the field of high-energy-density physics are presented. The interferometer is incorporated in the measuring complex of the TWAC-ITEP proton-radiographic facility. The developed laser system allows measurements of the velocity of free surfaces of samples in shock-wave experiments with an error no worse than 10 m/s for the entire range of velocities attained experimentally. The time resolution of measurements is limited by the response speed of the used PMTs and amounts to 2.5 ns. Combined investigations of shock-wave loading of metal targets and scabbing-fracture and jet-formation processes on free metal surfaces were performed by the proton-radiography and laser-interferometry methods.

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