Affordable Access

Lagrangians for plasmas in drift-fluid approximation

Authors
  • Pfirsch, D.
  • Correa-Restrepo, D.
  • Max-Planck-Institut fuer Plasmaphysik, G...
Publication Date
Jan 01, 1996
Source
OpenGrey Repository
Keywords
Language
English
License
Unknown

Abstract

For drift waves and related instabilities conservation laws can play a crucial role. In an ideal theory these conservation laws are guaranteed when a Lagrangian can be found from which the equations for the various quantities result by Hamilton's principle. Such a Lagrangian for plasmas in drift-fluid approximation was obtained by a heuristic method in a recent paper by Pfirsch and Correa-Restrepo. In the present paper the same Lagrangian is derived from the exact multi-fluid Lagrangian via an iterative approximation procedure which resembles the standard method usually applied to the equations of motion. That method, however, does not guarantee all the conservation laws to hold. (orig.) / 3 refs. / Available from TIB Hannover: RA 71(6/344) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische Informationsbibliothek / SIGLE / DE / Germany

Report this publication

Statistics

Seen <100 times