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Appl. Phys. Lett. 92, 021503 (2008); doi:10.1063/1.2827579 (3 pages)

Pinch current limitation effect in plasma focus

S. Lee1 and S. H. Saw2

1Nanyang Technological University, National Institute of Education, Singapore 637616 and INTI International University College, 71800 Nilai, Malaysia Map This map
2INTI International University College, 71800 Nilai, Malaysia Map This map

(Received 8 November 2007; accepted 3 December 2007; published online 17 January 2008)

The Lee model couples the electrical circuit with plasma focus dynamics, thermodynamics, and radiation. It is used to design and simulate experiments. A beam-target mechanism is incorporated, resulting in realistic neutron yield scaling with pinch current and increasing its versatility for investigating all Mather-type machines. Recent runs indicate a previously unsuspected “pinch current limitation” effect. The pinch current does not increase beyond a certain value however low the static inductance is reduced to. The results indicate that decreasing the present static inductance of the PF1000 machine will neither increase the pinch current nor the neutron yield, contrary to expectations.

© 2008 American Institute of Physics

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KEYWORDS and PACS

PACS

  • 52.58.Lq

    Z-pinches, plasma focus, and other pinch devices

PUBLICATION DATA

ISSN:

0003-6951 (print)  
1077-3118 (online)

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