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Type: Artigo de periódico
Abstract: It is shown that the ratio between ion and electron macroscopic rotational frequencies in rigid rotor profiles, OMEGA-i/OMEGA-e, is not a free parameter when global charge neutrality is taken into account. For most applications of interest OMEGA-i/OMEGA-e less-than-or-equal-to - T(i)/T(e) and depends on global characteristics of the confined plasma, as number of confined particles per unit length, T(i)/T(e) and the diamagnetism. Global charge neutrality is justified on the facts that in weakly coupled plasmas, the electrostatic energy of each species should be much lower than the respective thermal energy on average, and that no experimental evidence of any net charge of the plasma in theta-pinches or field-reversed configurations is reported. Connections of the present results with previous stability studies based on the rigid rotor model are discussed and some comparison with experimental results, supporting the hypothesis of global charge neutrality, are presented.
Country: Japão
Editor: Physical Society Japan Kikai-shinko Building
Citation: Journal Of The Physical Society Of Japan. Physical Society Japan Kikai-shinko Building, v. 60, n. 9, n. 2960, n. 2965, 1991.
Rights: fechado
Identifier DOI: 10.1143/JPSJ.60.2960
Date Issue: 1991
Appears in Collections:Unicamp - Artigos e Outros Documentos

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