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Title: Study of the azimuthal magnetic fields and scaling laws at the KPF-4-Phoenix facility

Results are presented from magnetic probe measurements in the pinching region formed during the compression of the plasma current sheath (PCS) in a discharge in deuterium at the KPF-4-Phoenix plasma focus facility. The fine structure (shock front-magnetic piston) of the PCS and its time evolution in the course of plasma compression toward the facility axis was studied by means of magnetic probes. It is shown that the fraction of the current transported into the axial region by the PCS does not exceed 65% of the total discharge current. The integral neutron yield Y{sub n} is well described by the formula Y{sub n} ≈ (1.5–3) × 10{sup 10}I{sub p}{sup 4}, where I{sub p} (in MA) is the pinch current flowing in the region r ≤ 22 mm.
Authors:
;  [1] ; ; ;  [2]
  1. National Research Centre Kurchatov Institute (Russian Federation)
  2. Sukhum Institute of Physics and Technology, Abkhazia (Country Unknown)
Publication Date:
OSTI Identifier:
22216066
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 39; Journal Issue: 11; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPRESSION; DEUTERIUM; ELECTRIC CURRENTS; FINE STRUCTURE; INTEGRALS; MAGNETIC FIELDS; MAGNETIC PROBES; NEUTRONS; PISTONS; PLASMA FOCUS; SCALING LAWS