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1u <- X1
+g SYSTEM OF I2.
N. NISHIMIYA, T. YUKIYA, O. OHSHIMA AND M. SUZUKI, Dept. of Electronic Engineering, Tokyo Institute of Polytechnics, Iiyama 1583, Atsugi City, 243-0297 Kanagawa, Japan.
The molecular constants for the A-state of I2 calculated by the NDE method have been reported by D.R.T.Appadoo et al . 1 Yukiya et al. measured the Q-branch lines up to v'=45 using a titanium sapphire ring laser, where the hyperfine components were partially resolved at the higher vibrational bands than those of v'=35, and determined the spectroscopic constants. 2 In this work we report the line splittings of the P and R-branches caused by the nuclear quadrupole coupling effect. The 23 bands of (v'=15-19) <- (v''=3), (v'=18-30) <- (v''=4), and (v'=25-29) <- (v''=5) were newly assigned. The unperturbed line positions were obtained using the high J approximation.
The spectroscopic constants of Tv, Bvf, Dv, Hv, and qv of the A-state determined by the aid of the Dunham parameters of the X-state 3 will be presented.
\underline\makebox[8cm]
1. D.R.T.Appadoo, R.J.LeRoy, P.F.Bernath, S.Gerstenkorn, P.Luc, J.Vergès, J.Sinzelle,
\makebox[1.3em]J.Chevillard, and Y.D'Aignaux, \sl J.Chem.Phys., 104, 903 (1996).
2. T.Yukiya, N.Nishimiya, and M.Suzuki, \sl J.Mol.Spectrosc., 182, 271 (1996).
3. S.Gerstenkorn and P.Luc, \sl J.Phys., 46, 867 (1985).