Medida da temperatura de íons em um propulsor a plasma do tipo hall via espectroscopia óptica

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Spectroscopy is one of the most used techniques concerning the study of plasma, owning particulary to the fact that it is a non-intrusive method. Others plasma diagnostic techniques with emissive probe and energy analyzers perform the desired measurement but interfere in the field configuration as well as in plasma itself provoking plasma cooling and ions recombination. On the other hand spectroscopy obtained data, allows characterization of many physical features such ions temperature and plasma composition. Density plasma data, velocity distribution and plasma flux direction are based on spectral lines broaden witch are measured directly from optical spectroscopy. By using spectroscopy techniques it is also possible to measure effects such as Stark and Zeemans as well as their contribution to experimental obtained spectral line profile. In this project it was developed an optical spectroscopy based system applied to the Plasma Hall Thruster PHALL-01 of UnBs Plasma Laboratory. Data acquisition took place through the entire visible range (3000 to 8000 A). Following, it was carried out a verification and subsequent classification of the most often appearing peaks for means of obtaining plasma composition. Doppler enlargement measurements were applied in order to calculate ions temperature. The PHALL-01s plasma was also characterized so as to establish an ideal stable operation regime to estimate the applicability of this kind of thruster as well as its spatial qualification.

ASSUNTO(S)

espectroscopia óptica fisica propulsor hall propulsão a plasma

ACESSO AO ARTIGO

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