Abstract
The spectrum of iodine was recorded in the 300–1250 Å on 3 m and 6.65 m normal incidence spectrographs at the Antigonish laboratory and Zeeman Laboratory using a triggered spark and sliding spark sources. The earlier analysis of the 5s25p3, 5s25p2(5d + 6s) and 5s5p4 configurations has been confirmed, the level 5s25p25d2S1/2 has been found and levels of four new even parity configurations viz. 5s25p2ns (n = 7,8) and 5s25p2nd (n = 6,7) with J ≤ 7/12, have been established. One hundred and ninety (190) new lines have been classified in I III spectrum and 69 new levels have been established. Hartree–Fock (HF) and least-squares-fitted (LSF) calculations support the interpretation presented in this report. Using 5s25p2ns (n = 6,7,8) and 5s25p2nd (n = 5,6,7) series Ionization Potential has been calculated as 238500 ± 200 cm-1 (29.56 ± 0.02 eV) for I IV 5s25p2 3P0.
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