Navegar

Colección

Datos Estadísticas

Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

A model is developed to describe the plasma jet generated in a vacuum arc, which enters and flows inside a straight magnetic filter with a realistic magnetic field configuration. Considering a low-density collisionless plasma projection of the electron momentum equation along the magnetic field lines and the assumption of quasi-neutrality allows one to relate the plasma density to the electrostatic potential. The system of equations is closed using the ion mass conservation and ion momentum equations. The model is compared to measurements on the plasma jet generated in a pulsed copper vacuum arc with an annular anode, moving along a straight magnetic filter. Probe measurements of the ion saturation current and of the floating potential at different axial and radial positions along the filter, and for different magnetic field values, are used in the comparison with the model results. It is found that anomalous diffusion is needed to fit the experimental measurements. Moreover, a novel anomalous friction effect for ion motion across magnetic lines has to be invoked in order to prevent strong radial oscillations triggered by the fast magnetic focusing of the plasma at the filter entrance and obtain realistic results. A simple model is presented to account for both of these effects, based on the assumption of a high level of fluctuations in the plasma. © 2011 IEEE.

Registro:

Documento: Artículo
Título:Model with anomalous diffusion and friction for a vacuum-arc plasma jet in a straight magnetic filter
Autor:Minotti, F.; Giuliani, L.; Grondona, D.; Della Torre, H.; Kelly, H.
Filiación:Consejo Nacional de Ciencias y Tecnología (CONICET), Buenos Aires, C1033AAJ, Argentina
Instituto de Física Del Plasma (CONICET), Departamento de Física, Universidad de Buenos Aires, Buenos Aires, 1428, Argentina
Palabras clave:Anomalous transport; magnetic field; vacuum arc; Annular anodes; Anomalous diffusion; Anomalous transport; Different-magnetic fields; Electron momentum equations; Electrostatic potentials; Experimental measurements; Floating potentials; Friction effect; Ion mass; Ion momentum; Ion motions; Ion saturation current; Magnetic field configurations; Magnetic field line; Magnetic focusing; Magnetic lines; Model results; Probe measurements; Radial oscillation; Radial position; System of equations; vacuum arc; Vacuum arcs; Collisionless plasmas; Diffusion; Friction; Ions; Magnetic fields; Magnetic filters; Magnetic separators; Plasma accelerators; Plasma density; Plasma diagnostics; Plasma jets; Vacuum; Vacuum applications; Vacuum technology; Magnetoplasma
Año:2011
Volumen:39
Número:10
Página de inicio:2014
Página de fin:2021
DOI: http://dx.doi.org/10.1109/TPS.2011.2163427
Título revista:IEEE Transactions on Plasma Science
Título revista abreviado:IEEE Trans Plasma Sci
ISSN:00933813
CODEN:ITPSB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00933813_v39_n10_p2014_Minotti

Referencias:

  • Aksenov, I.I., Belous, V.A., Padalka, V.G., Khoroshikh, V.M., Transport of plasma streams in a curvilinear plasma-optics system (1978) Sov J Plasma Phys, 4 (4), pp. 425-428
  • Anders, S., Anders, A., Brown, I., Macroparticle-free thin films produced by an efficient vacuum arc deposition technique (1993) J. Appl. Phys., 74 (6), pp. 4239-4241. , Sep
  • Anders, S., Anders, A., Yu, K.M., Yao, X.Y., Brown, I.G., On the macroparticle flux from vacuum arc cathode spots (1993) IEEE Trans. Plasma Sci., 21 (5), pp. 440-446. , Oct
  • Storer, J., Galvin, J.E., Brown, I.G., Transport of vacuum arc plasma through straight and curved magnetic ducts (1989) J. Appl. Phys., 66 (11), pp. 5245-5250. , Dec
  • Kelly, H., Giuliani, L., Rausch, F., Characterization of the ion emission in a pulsed vacuum arc with an axial magnetic field (2003) J. Phys. D, Appl. Phys., 36 (16), pp. 1980-1986. , Aug
  • Anders, A., Anders, S., Brown, I.G., Effect of duct bias on transport of vacuum arc plasmas through curved magnetic filters (1994) J. Appl. Phys., 75 (10), pp. 4900-4905. , May
  • Keidar, M., Beilis, I.I., Anders, A., Brown, I.G., Free-boundary vacuum arc plasma jet expansion in a curved magnetic field (1999) IEEE Trans. Plasma Sci., 27 (2), pp. 613-619. , Apr
  • Keidar, M., Beilis, I.I., Brown, I.G., Multiply charged ion transport in free boundary vacuum arc plasma jet (1998) Journal of Applied Physics, 84 (11), pp. 5956-5960
  • Giuliani, L., Minotti, F.O., Grondona, D., Kelly, D., On the dynamics of the plasma entry and guiding in a straight magnetized filter of a pulsed vacuum arc (2007) IEEE Trans. Plasma Sci., 35 (6), pp. 1710-1716. , Dec
  • Martines, E., Zuin, M., Antoni, V., Cavazzana, R., Seriani, G., Spolaore, M., Nakashima, C., Experimental investigation of low-frequency waves propagating in a direct current planar magnetron plasma (2004) Phys. Plasmas, 11 (5), pp. 1938-1946. , May
  • Bultinck, E., Mahieu, S., Depla, D., Bogaerts, A., The origin of Bohm diffusion, investigated by a comparison of different modeling methods (2010) J. Phys. D, Appl. Phys., 43 (29), pp. 2920011-2920015. , Jul
  • Hurtig, T., Brenning, N., Raadu, M.A., The role of high frequency oscillations in the penetration of plasma clouds across magnetic boundaries (2005) Phys. Plasmas, 12 (1), pp. 0123081-01230813. , Jan
  • Giuliani, L., Grondona, D., Kelly, H., Minotti, F.O., On the plasma rotation in a straight magnetized filter of a pulsed vacuum arc (2007) Journal of Physics D: Applied Physics, 40 (2), pp. 401-408. , DOI 10.1088/0022-3727/40/2/017, PII S0022372707336036, 017
  • Spitzer, L., (1962) Physics of Fully Ionized Gases, , 2nd ed. New York: Wiley
  • Giuliani, L., Grondona, D., Kelly, H., Minotti, F.O., Ion kinetic energy distribution in a pulsed vacuum arc with a straight magnetic filter (2008) Phys. Scr., T131, pp. 0140321-0140323. , Oct
  • Lieberman, M.A., Lichtenberg, A.J., (1994) Principles of Plasma Discharges and Materials Processing, , New York: Wiley , ch. 2
  • Akhiezer, I., Akhiezer, I.A., Polovin, R.V., Sitenko, A.G., Stepanov, K.N., (1975) Plasma Electrodynamics: Vol. 2 Non-Linear Theory and Fluctuations, , New York:Pergamon, ch. 11
  • Lam, S., Unified theory for the Langmuir probe in a collisionless plasma (1965) Phys. Fluids, 8 (1), pp. 73-87. , Jan
  • Anders, A., Yushkov, G., Ion flux from vacuum arc cathode spots in the absence and presence of a magnetic field (2002) J. Appl. Phys., 91 (8), pp. 4824-4832. , Apr
  • Boxman, R., Sanders, D., Martin, P., (1995) Handbook of Vacuum Arc Science and Technology, Fundamentals and Applications, , Park Ridge, NJ: Noyes
  • Chen, F.F., Introduction to Plasma Physics and Controlled Fusion, , 2nd ed. New York: Plenum
  • Bradley, J.W., Thompson, S., Aranda Gonzalvo, Y., Measurement of the plasma potential in a magnetron discharge and the prediction of the electron drift speeds (2001) Plasma Sources Science and Technology, 10 (3), pp. 490-501. , DOI 10.1088/0963-0252/10/3/314, PII S0963025201212420
  • Krishan, S., Ravindra, M.P., Ion heating by the lower hybrid mode (1975) Phys. Rev. Lett., 34 (15), pp. 938-940. , Apr
  • Stix, T.H., (1992) Waves in Plasmas, , New York: AIP, ch. 1
  • Stix, T.H., (1992) Waves in Plasmas, , New York: AIP, ch. 13
  • Alterkop, B., Gidalevich, E., Goldsmith, S., Boxman, R.L., Vacuum arc plasma jet propagation in a toroidal duct (1996) Journal of Applied Physics, 79 (9), pp. 6791-6802
  • Shi, X., Tu, Y.Q., Tan, H.S., Tay, B.K., Milne, W.I., Simulation of plasma flow in toroidal solenoid filters (1996) IEEE Transactions on Plasma Science, 24 (6), pp. 1309-1318. , PII S0093381396093137

Citas:

---------- APA ----------
Minotti, F., Giuliani, L., Grondona, D., Della Torre, H. & Kelly, H. (2011) . Model with anomalous diffusion and friction for a vacuum-arc plasma jet in a straight magnetic filter. IEEE Transactions on Plasma Science, 39(10), 2014-2021.
http://dx.doi.org/10.1109/TPS.2011.2163427
---------- CHICAGO ----------
Minotti, F., Giuliani, L., Grondona, D., Della Torre, H., Kelly, H. "Model with anomalous diffusion and friction for a vacuum-arc plasma jet in a straight magnetic filter" . IEEE Transactions on Plasma Science 39, no. 10 (2011) : 2014-2021.
http://dx.doi.org/10.1109/TPS.2011.2163427
---------- MLA ----------
Minotti, F., Giuliani, L., Grondona, D., Della Torre, H., Kelly, H. "Model with anomalous diffusion and friction for a vacuum-arc plasma jet in a straight magnetic filter" . IEEE Transactions on Plasma Science, vol. 39, no. 10, 2011, pp. 2014-2021.
http://dx.doi.org/10.1109/TPS.2011.2163427
---------- VANCOUVER ----------
Minotti, F., Giuliani, L., Grondona, D., Della Torre, H., Kelly, H. Model with anomalous diffusion and friction for a vacuum-arc plasma jet in a straight magnetic filter. IEEE Trans Plasma Sci. 2011;39(10):2014-2021.
http://dx.doi.org/10.1109/TPS.2011.2163427