Niveis energeticos e transições atomicas no Kr V1, ArV e Xe VII

AUTOR(ES)
DATA DE PUBLICAÇÃO

1994

RESUMO

In this thesis we studied the atomic emission spectra of five times ionized kripton (KrVI), four time ionized argon (ArV) and six time ionized xenon (XeVII). We used two theta-pinchs (Technological Institute of Lund -Sweden and Unicamp-Brazil) and a tube of capilar discharge (CIOp-Argentina) as a ligth sources. In the theta-pinch at Unicamp, several improvements based on theoretical and experimental studies about the performance of theta-pinch as a spectroscopic light source, were made, which led to a fourfold increased energy transfer efficiency. Also we used a crowbar to control the ringing of the discharge which allowed us to obtain a much more precise ionic classification. The final characterization of the spectral lines was done with a computer controlled microdensitometer . In the analysis task, the ab-initio calculations was done using a multiconfigurational Hartree-Fock code. We investigated new configurations and made a thorough revision of all previously reported lines. For Kr VI, we obtained 22 new energy levels, classified 121 new transitions and ascribed new energy values for five levels in revised configurations. For Ar V we obtained all 43 previously known lines and also obtained 3 more new energy levels and classified 11 new transitions in previously studied configurations. We introduced the new configuration 3p4 and obtained its five levels based on 13 new transitions. For Xe VII, were observed 62 transitions and of then 44 are new. We obtained alI lines already observed in previous work made by other authors. We identified a new energy level and rejected one level due to disagreement with our ionic classification. We indicated 21 new energy levels positions belonging to new configurations 5s5d and 5d2

ASSUNTO(S)

gases raros espectro (fisica) criptonio

ACESSO AO ARTIGO

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