The absorption spectrum of CCl was observed down to 600 Angstrom in a
microwave discharge in helium with traces of CCl4, using synchrotron r
adiation from SUPERACO at L.U.R.E. (Orsay, France) as the continuum so
urce. Identifications include three Rydberg series, showing vibrationa
l structure, converging to the A(1)II electronic state and three serie
s converging to the B-1 Sigma(+) electronic state of CCl+. Two new ion
ization potentials for the A and B core limits are (14.3760 +/- 0.0066
) eV and (18.5966 +/- 0.0063) eV. (C) 1995 Academic Press, Inc.