| Texto completo | |
| Autor(es): |
Puglia, P. G. P.
[1]
;
Elfimov, A. G.
[1]
;
Andriati, A. V.
[1]
;
Galvao, R. M. O.
[1]
;
Guimaraes-Filho, Z. O.
[1]
;
Ronchi, G.
[1]
;
Ruchko, L. F.
[1]
Número total de Autores: 7
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Inst Phys, Rua Matao Travessa R 187, BR-05508090 Sao Paulo - Brazil
Número total de Afiliações: 1
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Physics Letters A; v. 380, n. 11-12, p. 1189-1192, MAR 11 2016. |
| Citações Web of Science: | 0 |
| Resumo | |
The mass number is obtained through the identification of the Global Alfven (GA) wave resonances in ohmic plasma discharges in the TCABR tokamak. By comparing hydrogen and helium discharges, the composition of carbon, oxygen, and iron impurities is determined. The non-perturbative Alfven diagnostic is used that is based on the excitation of GA waves by an external antenna fed by a low power generator, in the frequency band swept just below the minimum of the Alfven wave continuum. Odd or even toroidal modes are excited by selecting the current phase in the two antenna modules separated by 180 degrees in the toroidal direction. The density profile, determined from cross analysis of reflectometer and interferometer data, shows impurity accumulation in the plasma core. (C) 2016 Elsevier B.V. All rights reserved. (AU) | |
| Processo FAPESP: | 11/50773-0 - Núcleo de excelência em física e aplicações de plasmas |
| Beneficiário: | Ricardo Magnus Osório Galvão |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |