N. NISHIMIYA AND T. YUKIYA, Department of System Electronics and Information Technology, Department of Applied Computer Science, Tokyo Plolytechnic University, Iiyama 1583, Atsugi City, 243-0297 Kanagawa, JAPAN.
The doppler limited electronic vib--rotational absorption spectrum of A3 1 X1 + system in I35/37Cl is measured in the 11300 -- 13200 cm-1 region using a Ti:Sapphire Ring Laser (Coherent 899-21). The 56 bands belonging to (v' = 0 7) (v'' = 0 6) in I35/37Cl are assigned. The
Dunham coefficients of the X1 + state are calculated based on a global
reduced least squares fitting procedure. The Y''10 and Y''01 reported by Hedderich et al. are
the calculation because we
do not have sufficient spectrum belonging to v''= 0 2. In the A3 1 state, the T'v, B've/f, D'v and H'v are
determined instead of the
Dunham coefficients to avoid the distortion of the potential.
%A multiple precision arithmetic library was used in this procedure
To investigate the accuracy of
Dunham coefficients determined
in the X1 + state, the absorption lines of 4' 0'' and 5' 0'' bands are assigned in the 14438 -- 14491 cm-1 region where measurements are performed intermittently. Those lines are well positioned within the limit of the standard deviation.