Abstract
Experiments on the acceleration of a flyer by a magnetic field make it possible to study the dynamic characteristics of matter on submicrosecond time scales. Megabar pressures at the Angara-5-1 facility are produced using the magnetic field of the current with a linear density of up to 5 MA/cm. In the previous experiments on the acceleration of a duralumin flyer, velocities of up to 10 km/s were achieved. The flyer motion was recorded by means of laser shadowgraphy. In this work, the efficiency of momentum transfer from a duralumin flyer to an initially immobile tungsten target was studied. From the kinematic parameters of the flyer motion before the impact and the motion of the flyer together with the target after the impact, the fraction of the flyer mass that transfer the momentum to the target was estimated. It is established that almost the entire mass of the flyer is involved in the impact process.
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FUNDING
The experimental part of the work was supported by the Russian Science Foundation, project no. 16-12-10487. The computational part of the work was supported by the Presidium of the Russian Academy of Sciences (basic research program no. 13 “Condensed Matter and Plasma at High Energy Densities”).
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Aleksandrov, V.V., Branitskii, A.V., Grabovski, E.V. et al. Study of the Impact of a Duralumin Flyer with a Tungsten Target at the Angara-5-1 Facility. Plasma Phys. Rep. 45, 421–426 (2019). https://doi.org/10.1134/S1063780X19040019
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DOI: https://doi.org/10.1134/S1063780X19040019