Thermodynamic and electrical properties of railgun plasma armatures

Rolader, G.E.; Batteh, Jad H.

doi:10.1109/27.32252

Cited by 25 publications

(4 citation statements)

References 10 publications

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“…We do, however, account for the lowering of ionization potential. A similar approximation has been employed for railgun plasma armatures by Rolader and Batteh [12], and we will use the same model for the ionization reduction as they have Solid Polyethylene employed. The model is that developed by Ebeling and Sandig [13].…”

Section: Model and Assumptionsmentioning

confidence: 94%

Capillary discharge in the electrothermal gun

Powell

Zielinski

1993

IEEE Trans. Magn.

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A one-dimensional model is described for calculating the properties of plasma arcs in ablating, cylindrical capillaries. The basic assumptions and governing equations are presented and the results of some numerical solutions are discussed. These results are also compared with experimental measurements of the voltage across the arc, as well the pressure measured at a specific point in the capillary tube. The degree to which theory and experiment agree is discussed in some detail and possible reasons for the lack of agreement, where it exists, are pointed out.

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Section: Model and Assumptionsmentioning

confidence: 94%

Capillary discharge in the electrothermal gun

Powell

Zielinski

1993

IEEE Trans. Magn.

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“…The presented spectral line widths of Al IV, broadened by collisions with surrouning electrons (Stark broadening) may be used for many topics in astrophysics like for modelling of stellar atmospheres, abundance determination of zinc, analysis and synthesis of Al IV lines in stellar spectra, opacity calculations, investigation, modelling and diagnostics of laboratory plasmas as well as for various technological applications in particular for optimisation of cutting, welding, melting and piercing of aluminium by lasers. They also may be used for the diagnostic and modelling of an electrodynamic macro-particle accelerator arc plasma created by the evaporation of an Al-foil [40,41] and for diagnostics of plasmas generated during incipient laser ablation of aluminum in air [42].…”

Section: Discussionmentioning

confidence: 99%

Stark Broadening of Al IV Spectral Lines

Dimitrijević¹,

Christova²

2023

Preprint

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Stark widths for 23 transitions in Al IV have been calculated employing modified semiempirical method. The results are obtained for an electron density of 10^17 cm−3 and temperatures from 10,000 K up to 160,000 K. The results obtained in this investigation are used for the examination of the influence of Stark broadening in Al IV stellar spectra, as well as to check Stark width regular behavior and similarites within Al IV spectrum.

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“…These functional relationships have been worked out for many plasma-arc materials by Rolader and Batteh [13]. Their treatment accounts for certain nonideal effects which occur in plasmas at the high densities and somewhat low temperatures generally associated with these plasmas.…”

Section: Model and Assumptionsmentioning

confidence: 98%

Effect of a transient current profile on the dynamics of railgun arcs

1993

Self Cite

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A one-dimensional, time-dependent model for describing transient behavior in railgun plasma armatures is employed in order to investigate the effects produced by a time-varying current profile. Ablation from the rail surfaces is also accounted for. The governing equations are solved numerically to produce as a function of time and space the electrodynamic and thermodynamic properties of the arc. These quantities are shown to be considerably different from those predicted by commonly used quasi-static models. The importance of these transient effects and how they can affect the design of projectiles and the analysis of diagnostic data are discussed.

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Thermodynamic and electrical properties of railgun plasma armatures

Cited by 25 publications

References 10 publications

Capillary discharge in the electrothermal gun

Capillary discharge in the electrothermal gun

Stark Broadening of Al IV Spectral Lines

Effect of a transient current profile on the dynamics of railgun arcs

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