Abstract
Indium monofluoride was excited in a high-frequency discharge and the C-X system was photographed at a reciprocal dispersion of 0.3 AA mm-1 using a plane-grating spectrograph. Rotational analyses of the 0,0 1,0 2,2 3,3 4,4 2,4 3,5 4,6 and 5,7 bands have been carried out and the following molecular constants have been evaluated. Be'=0.2670(+or-3) cm-1, Be=0.2628(+or-4) cm-1, alpha e'=0.0050(+or-4) cm-1, alpha e=0.0020(+or-1) cm-1, De'=3.65(+or-5)*10-7 cm-1, De=2.5(+or-3)*10-7 cm-1, beta e'=0.5(+or-2)*10-7 cm-1, beta e=0.2(+or-1)*10-7 cm-1, re'=1.9672(+or-3) AA, re=1.9853(+or-2) AA. The re value agrees with the microwave absorption value 1.9854 AA.
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