Abstract

The spectrum of tin was photographed in the 150-250 Å region on a 10.7 m spectrograph at the NIST Laboratory in Gaithersburg, USA, and the 3 m spectrograph in Troitsk, Russia, using a triggered spark source. In the 4d9 −4d8 (4f + 6p) transition array of Sn VI spectrum 85 lines have been classified. Sixty-three levels belonging to the 4d84f and 4d86p configurations have been established. Parametric least-squares-fitting calculations including configuration interaction between the 4d8(5p + 6p + 4f + 5f + 6f) and 4p54d10 configurations were carried out to interpret the observed spectrum adequately.

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