AN EXPERIMENTAL INVESTIGATION OF THE DOUBLE-IONIZATION OF HYDROGEN-SULFIDE TO TRIPLET ELECTRONIC STATES OF THE DICATION

A double-charge-transfer spectroscopy study of hydrogen sulphide has b een carried out, and six double-ionization energies to various electro nic states of H2S2+ measured. Because of the conservation of spin mult iplicity in the double-charge-transfer reactions which are central to this type of spectroscopy, acid the use of OH+ as the projectile ion, tripler states of H2S2+ were populated. This was confirmed by the good agreement between the measured double-ionization energies and publish ed calculated values for transitions to triplet states of H2S2+.