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Title: X-pinch dynamics: Neck formation and implosion

We propose a model that describes the neck formation and implosion in an X-pinch. The process is simulated to go in two stages. The first stage is neck formation. This stage begins with an electrical explosion of the wires forming the X-pinch, and at the end of the stage, a micropinch (neck) is formed in the region where the wires are crossed. The second stage is neck implosion. The implosion is accompanied by outflow of matter from the neck region, resulting in the formation of a “hot spot”. Analytical estimates obtained in the study under consideration indicate that these stages are approximately equal in duration. Having analyzed the neck implosion dynamics, we have verified a scaling which makes it possible to explain the observed dependences of the time of occurrence of an x-ray pulse on the X-pinch current and mass.
Authors:
 [1] ;  [2] ;  [1] ;  [2] ; ; ; ; ;  [1]
  1. Institute of High Current Electronics, SB, RAS, 2/3 Akademichesky Ave., Tomsk 634055 (Russian Federation)
  2. (Russian Federation)
Publication Date:
OSTI Identifier:
22299691
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APPROXIMATIONS; IMPLOSIONS; PLASMA SIMULATION; PULSES; SCALING; X RADIATION