Deterministic dynamics of plasma focus discharges

The performance (neutron yield, X-ray production, etc.) of plasma focus discharges series fluctuates strongly when performed with fixed experimental conditions. Previous work suggests that these fluctuations are due to a deterministic 'internal' dynamics involving degrees of freedom not co...

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Autores principales: Gratton, J., Alabraba, M.A., Warmate, A.G., Giudice, G.
Formato: JOUR
Materias:
Adsorption
Chaos theory
Electron beams
Heuristic methods
Energetic ions
Plasma focus discharges
Plasma theory
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09600779_v3_n3_p343_Gratton
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09600779_v3_n3_p343_Gratton
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spelling todo:paper_09600779_v3_n3_p343_Gratton2023-10-03T15:53:34Z Deterministic dynamics of plasma focus discharges Gratton, J. Alabraba, M.A. Warmate, A.G. Giudice, G. Adsorption Chaos theory Electron beams Heuristic methods Energetic ions Plasma focus discharges Plasma theory The performance (neutron yield, X-ray production, etc.) of plasma focus discharges series fluctuates strongly when performed with fixed experimental conditions. Previous work suggests that these fluctuations are due to a deterministic 'internal' dynamics involving degrees of freedom not controlled by the operator, possibly related to adsorption and desorption of impurities from the electrodes. According to this dynamics the yield of a discharge depends on the outcome of the previous ones. We study eight series of discharges in three different facilities, with various electrode materials and operating conditions. More evidence of a deterministic internal dynamics is found. The fluctuation pattern depends on the electrode materials and other characteristics of the experiment. A heuristic mathematical model that describes adsorption and desorption of impurities from the electrodes and their consequences on the yield is presented. The model predicts steady yield or periodic and chaotic fluctuations, depending on parameters related to the experimental conditions. © 1993. Fil:Gratton, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Giudice, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09600779_v3_n3_p343_Gratton
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Adsorption
Chaos theory
Electron beams
Heuristic methods
Energetic ions
Plasma focus discharges
Plasma theory
spellingShingle Adsorption
Chaos theory
Electron beams
Heuristic methods
Energetic ions
Plasma focus discharges
Plasma theory
Gratton, J.
Alabraba, M.A.
Warmate, A.G.
Giudice, G.
Deterministic dynamics of plasma focus discharges
topic_facet Adsorption
Chaos theory
Electron beams
Heuristic methods
Energetic ions
Plasma focus discharges
Plasma theory
description The performance (neutron yield, X-ray production, etc.) of plasma focus discharges series fluctuates strongly when performed with fixed experimental conditions. Previous work suggests that these fluctuations are due to a deterministic 'internal' dynamics involving degrees of freedom not controlled by the operator, possibly related to adsorption and desorption of impurities from the electrodes. According to this dynamics the yield of a discharge depends on the outcome of the previous ones. We study eight series of discharges in three different facilities, with various electrode materials and operating conditions. More evidence of a deterministic internal dynamics is found. The fluctuation pattern depends on the electrode materials and other characteristics of the experiment. A heuristic mathematical model that describes adsorption and desorption of impurities from the electrodes and their consequences on the yield is presented. The model predicts steady yield or periodic and chaotic fluctuations, depending on parameters related to the experimental conditions. © 1993.
format JOUR
author Gratton, J.
Alabraba, M.A.
Warmate, A.G.
Giudice, G.
author_facet Gratton, J.
Alabraba, M.A.
Warmate, A.G.
Giudice, G.
author_sort Gratton, J.
title Deterministic dynamics of plasma focus discharges
title_short Deterministic dynamics of plasma focus discharges
title_full Deterministic dynamics of plasma focus discharges
title_fullStr Deterministic dynamics of plasma focus discharges
title_full_unstemmed Deterministic dynamics of plasma focus discharges
title_sort deterministic dynamics of plasma focus discharges
url http://hdl.handle.net/20.500.12110/paper_09600779_v3_n3_p343_Gratton
work_keys_str_mv AT grattonj deterministicdynamicsofplasmafocusdischarges
AT alabrabama deterministicdynamicsofplasmafocusdischarges
AT warmateag deterministicdynamicsofplasmafocusdischarges
AT giudiceg deterministicdynamicsofplasmafocusdischarges
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