Helical Magneto-Cumulative Generators for Plasma Focus Powering

Author

Demidov, Vasily A. ; Kazakov, Sergey A.

Author_Institution

Sci. & Tech. Center of Phys., Russian Fed. Nucl. Center - All-Russian Res. Inst. of Exp. Phys. (RFNC-VNIIEF), Sarov, Russia

Volume

38

Issue

8

fYear

2010

Firstpage

1758

Lastpage

1761

Abstract

High-inductive helical magneto-cumulative generators (MCGs) of 50- and 80-mm diameters intended for a plasma focus (PF) powering are created in VNIIEF. High energy gain, efficient operation into loads to 50 nH, and the possibility of application in combination with the current opening switches are the distinctive features of the generators. Having small sizes and masses, these generators produce current pulses from 400 kA to 1 MA with the rise time of ~ 0.5 μs powered with the energy less than 100 J. This paper presents results of experimental research during which the high stability of the MCG operation both on the current amplitude and operation time is shown. Results of the experiments on the PF powered from the MCG, operated in the regime of the magnetic flux extra compression, are presented. The yield of 10¹² neutronsper pulse was recorded in the tests with the MCG-80 and PF with D-T mixture.

Keywords

explosions; plasma focus; plasma switches; pulse generators; D-T mixture; VNIIEF; current amplitude; current pulse production; explosive current opening switch; explosive magnetic flux compression; high energy gain; high-inductive helical magnetocumulative generator; operation time; plasma focus powering; size 50 mm; size 80 mm; $D$– $T$ mixture; explosive opening switch (EOS); helical magneto-cumulative generator (MCG); neutron yield; plasma focus (PF);

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2010.2049381

Filename

5475212