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VOLUME 31 (1980) | ISSUE 11 | PAGE 623
Shock compressibility of aluminum at a pressure of 10 Mbar
A method is proposed for measuring the phase and mass velocity of a shock wave by recording the motion of the y-reference point located in the investigated material. The measurement device is irradiated by a neutron flux. A thin layer containing atoms of an isotope with a large radiation capture reaction cross section serves as the ^-quanta source. In contrast to the reflection method, the proposed procedure makes it possible at high pressures to obtain independent information about the shock compressibility of materials. Experimental data on the shock compressibility of aluminum (σ = р/ p0 = 2.57) at a pressure ρ = 10.85 Mbar are presented.