期刊
JOURNAL OF APPLIED PHYSICS
卷 111, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3692570
关键词
-
资金
- Science and Technology Foundation of CAEP [2010A0201008]
This effort investigates the dynamic properties of ejecta from explosively shocked, melted Pb targets. The study shows that the ejecta cloud that expands beyond the shocked surface is characterized by a high density and low velocity fragment layer between the free-surface and the high velocity micro-jetting particle cloud. This slow, dense ejecta layer is liquid micro-spall. The properties of micro-spall layer, such as the mass, density and velocity, were diagnosed in a novel application of an Asay window, while micro-jetting particles by lithium niobate piezoelectric pins and high speed photography. The total mass-velocity distribution of ejecta, including micro-spall fragments and micro-jetting particles, is presented. Furthermore, the sensitivity of ejecta production to slight variations in the shockwave drive using the Asay foil is studied. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3692570]
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