Dear all,
Is it possible to study the shape resonance and Feshbach resonance (autoionization) in cationic systems (molecule) using the CAP-augmented EOM-CCSD methods in QChem? I failed to find any mention regarding the 'CAP-EOM-IP-CCSD' method in QChem 5.1 manual. Is there any module in QChem that can be used to study resonances for cationic systems ?

Any help/suggestion in this regard will be appreciated.

Thanks,
Soumitra