Influence of an external additional magnetic field on the formation of a plasma column in a dense plasma focus

2019 ◽  
Vol 26 (10) ◽  
pp. 102701
Author(s):  
P. Kubes ◽  
M. Paduch ◽  
M. J. Sadowski ◽  
J. Cikhardt ◽  
B. Cikhardtova ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Plasma Focus ◽  
Plasma Column ◽  
Dense Plasma ◽  
Dense Plasma Focus ◽  
Additional Magnetic Field

scholarly journals Dense Plasma Focus: A question in search of answers, a technology in search of applications

2014 ◽  
Vol 32 ◽  
pp. 1460315 ◽  
Author(s):  
S. K. H. Auluck
Keyword(s):  
Magnetic Field ◽  
Plasma Focus ◽  
Dense Plasma ◽  
Initial Conditions ◽  
Experimental Situation ◽  
Integrated Design ◽  
Axial Component ◽  
Dense Plasma Focus ◽  
Plasma Dynamics ◽  
Energetic Ions

Diagnostic information accumulated over four decades of research suggests a directionality of toroidal motion for energetic ions responsible for fusion neutron production in the Dense Plasma Focus (DPF) and existence of an axial component of magnetic field even under conditions of azimuthal symmetry. This is at variance with the traditional view of Dense Plasma Focus as a purely irrotational compressive flow. The difficulty in understanding the experimental situation from a theoretical standpoint arises from polarity of the observed solenoidal state: three independent experiments confirm existence of a fixed polarity of the axial magnetic field or related azimuthal current. Since the equations governing plasma dynamics do not have a built-in direction, the fixed polarity must be related with initial conditions: the plasma dynamics must interact with an external physical vector in order to generate a solenoidal state of fixed polarity. Only four such external physical vectors can be identified: the earth's magnetic field, earth's angular momentum, direction of current flow and the direction of the plasma accelerator. How interaction of plasma dynamics with these fields can generate observed solenoidal state is a question still in search of answers; this paper outlines one possible answer. The importance of this question goes beyond scientific curiosity into technological uses of the energetic ions and the high-power-density plasma environment. However, commercial utilization of such technologies faces reliability concerns, which can be met only by first-principles integrated design of globally-optimized industrial-quality DPF hardware. Issues involved in the emergence of the Dense Plasma Focus as a technology platform for commercial applications in the not-too-distant future are discussed.

Interaction of powerful hot plasma and fast ion streams with materials in dense plasma focus devices

2016 ◽  
Vol 113 ◽  
pp. 109-118 ◽  
Author(s):  
M. Chernyshova ◽  
V.A. Gribkov ◽  
E. Kowalska-Strzeciwilk ◽  
M. Kubkowska ◽  
R. Miklaszewski ◽  
...  
Keyword(s):  
Plasma Focus ◽  
Dense Plasma ◽  
Dense Plasma Focus ◽  
Hot Plasma ◽  
Fast Ion
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