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Plasma focus radiative model: Review of the lee model code

The code couples the electrical circuit with plasma focus (PF) dynamics, thermodynamics and radiation. It is energy-, charge- and mass-consistent and accounts for the effects of transit times of small disturbances and plasma self-absorption. It has been used in design and interpretation of Mather-ty...

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Main Author: Lee, S.
Format: Article
Language:English
Published: Springer US 2014
Subjects:
QC Physics
Online Access:http://eprints.intimal.edu.my/56/1/Plasma%20focus%20radiative%20modelReview%20of%20the%20lee%20model%20code.pdf
http://eprints.intimal.edu.my/56/
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spelling my-inti-eprints.562016-09-23T05:18:22Z http://eprints.intimal.edu.my/56/ Plasma focus radiative model: Review of the lee model code Lee, S. QC Physics The code couples the electrical circuit with plasma focus (PF) dynamics, thermodynamics and radiation. It is energy-, charge- and mass-consistent and accounts for the effects of transit times of small disturbances and plasma self-absorption. It has been used in design and interpretation of Mather-type PF experiments and as a complementary facility to provide diagnostic reference numbers in all gases. Information computed includes axial and radial dynamics, SXR emission characteristics and yield for various applications including microelectronics lithography and optimization of machines. Plasma focus neutron yield calculations, current and neutron yield limitations, deterioration of neutron scaling (neutron saturation), radiative collapse, speed-enhanced PF, current-stepped PF and extraction of diagnostic and anomalous resistance data from current signals have been studied using the code; which also produces reference numbers for fluence, flux and energy of deuteron beams and ion beams for all gases. There has been no pause in its continuous evolution in three decades so much so that the model code has no formal source reference except www.​plasmafocus.​net. This review presents, for the first time a comprehensive up-to-date version of the 5-phase model code. The equations of each phase are derived. Those of the first two phases are normalized to reveal important scaling parameters. The focus pinch phase is discussed with radiation-coupled dynamics necessitating the computation of radiation terms moderated by plasma self-absorption. Neutron and ion beam yields are computed. The 5-phase model code appears to be adequate for all Mather-type PF, lacking only in one aspect that for high inductance PF (termed Type 2) the measured current waveform contains an extended dip which cannot be fitted by the 5-phase code; necessitating an extended 6-phase code. This sixth phase (termed phase 4a) is dominated by anomalous resistance, providing a way to extract valuable data on anomalous resistivity from the current trace. Springer US 2014-03-04 Article PeerReviewed text en http://eprints.intimal.edu.my/56/1/Plasma%20focus%20radiative%20modelReview%20of%20the%20lee%20model%20code.pdf Lee, S. (2014) Plasma focus radiative model: Review of the lee model code. Journal of Fusion Energy, 33 (4). pp. 319-335. ISSN 1572-9591 10.1007/s10894-014-9683-8
institution INTI International University
building INTI Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider INTI International University
content_source INTI Institutional Repository
url_provider http://eprints.intimal.edu.my
language English
topic QC Physics
spellingShingle QC Physics
Lee, S.
Plasma focus radiative model: Review of the lee model code
description The code couples the electrical circuit with plasma focus (PF) dynamics, thermodynamics and radiation. It is energy-, charge- and mass-consistent and accounts for the effects of transit times of small disturbances and plasma self-absorption. It has been used in design and interpretation of Mather-type PF experiments and as a complementary facility to provide diagnostic reference numbers in all gases. Information computed includes axial and radial dynamics, SXR emission characteristics and yield for various applications including microelectronics lithography and optimization of machines. Plasma focus neutron yield calculations, current and neutron yield limitations, deterioration of neutron scaling (neutron saturation), radiative collapse, speed-enhanced PF, current-stepped PF and extraction of diagnostic and anomalous resistance data from current signals have been studied using the code; which also produces reference numbers for fluence, flux and energy of deuteron beams and ion beams for all gases. There has been no pause in its continuous evolution in three decades so much so that the model code has no formal source reference except www.​plasmafocus.​net. This review presents, for the first time a comprehensive up-to-date version of the 5-phase model code. The equations of each phase are derived. Those of the first two phases are normalized to reveal important scaling parameters. The focus pinch phase is discussed with radiation-coupled dynamics necessitating the computation of radiation terms moderated by plasma self-absorption. Neutron and ion beam yields are computed. The 5-phase model code appears to be adequate for all Mather-type PF, lacking only in one aspect that for high inductance PF (termed Type 2) the measured current waveform contains an extended dip which cannot be fitted by the 5-phase code; necessitating an extended 6-phase code. This sixth phase (termed phase 4a) is dominated by anomalous resistance, providing a way to extract valuable data on anomalous resistivity from the current trace.
format Article
author Lee, S.
author_facet Lee, S.
author_sort Lee, S.
title Plasma focus radiative model: Review of the lee model code
title_short Plasma focus radiative model: Review of the lee model code
title_full Plasma focus radiative model: Review of the lee model code
title_fullStr Plasma focus radiative model: Review of the lee model code
title_full_unstemmed Plasma focus radiative model: Review of the lee model code
title_sort plasma focus radiative model: review of the lee model code
publisher Springer US
publishDate 2014
url http://eprints.intimal.edu.my/56/1/Plasma%20focus%20radiative%20modelReview%20of%20the%20lee%20model%20code.pdf
http://eprints.intimal.edu.my/56/
_version_ 1644541111055679488
score 13.211869

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