Superheating of solid metal prior to electric explosion of wires at fast energy deposition

Autor:	A. A. Valuev, M N Krivoguz, Vladimir V. Stegailov, G. E. Norman
Rok vydání:	2003
Předmět:	Spinodal Materials science Nucleation General Physics and Astronomy Thermodynamics Statistical and Nonlinear Physics Mechanics Plasma Nanosecond Conductor Superheating Deposition (phase transition) Mathematical Physics Stationary state
Zdroj:	Journal of Physics A: Mathematical and General. 36:6041-6048
ISSN:	1361-6447 0305-4470
DOI:	10.1088/0305-4470/36/22/328
Popis:	We develop the concept which distinguishes the initial stages of the fast (nanosecond) electric explosion of wires: the superheating of the solid conductor, its spontaneous (spinodal) decay and the successive formation of the non-ideal plasma column. We use the molecular dynamics simulation approach to simulate homogeneous nucleation from a stationary state and at a constant heating rate. We study the parameters of the spinodal, the dependence of the melting temperature on the heating rate and the character of the decay. We consider the subsequent evolution of the fluid column and the axial plasma uniformity. We compare the results with the experimental data on nanosecond wire explosions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::21cabfa194e077d002281d1394e98b12 https://doi.org/10.1088/0305-4470/36/22/328 Zobrazit plný text záznamu