Electrostatic plasma instabilities excited by a high‐frequency electric field

Sanmartín Losada, Juan Ramón (1970). Electrostatic plasma instabilities excited by a high‐frequency electric field. "The physics of fluids", v. 13 (n. 6); pp. 1533-1542. ISSN 0031-9171.

Descripción

Título: Electrostatic plasma instabilities excited by a high‐frequency electric field
Autor/es:
  • Sanmartín Losada, Juan Ramón
Tipo de Documento: Artículo
Título de Revista/Publicación: The physics of fluids
Fecha: 1970
Volumen: 13
Materias:
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The electrostatic plasma waves excited by a uniform, alternating electric field of arbitrary intensity are studied on the basis of the Vlasov equation; their dispersion relation, which involves the determinant of either of two infinite matrices, is derived. For ω0 ≫ ωpi (ω0 being the applied frequency and ωpi the ion plasma frequency) the waves may be classified in two groups, each satisfying a simple condition; this allows writing the dispersion relation in closed form. Both groups coalesce (resonance) if (a) ω0  ≈  ωpe/r (r any integer) and (b) the wavenumber k is small. A nonoscillatory instability is found; its distinction from the DuBois‐Goldman instability and its physical origin are discussed. Conditions for its excitation (in particular, upper limits to ω0,k, and k⋅vE,vE being the field‐induced electron velocity), and simple equations for the growth rate are given off‐resonance and at ω0  ≈  ωpi. The dependence of both threshold and maximum growth rate on various parameters is discussed, and the results are compared with those of Silin and Nishikawa. The threshold at ω0  ≈  ωpi/r,r  ≠  1, is studied.

Más información

ID de Registro: 20417
Identificador DC: http://oa.upm.es/20417/
Identificador OAI: oai:oa.upm.es:20417
Depositado por: Biblioteca ETSI Aeronauticos
Depositado el: 23 Sep 2013 11:08
Ultima Modificación: 21 Abr 2016 23:12
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