Abstract:
Two shooting methods for calculation of potential (shape) resonances are described and their efficiency tested. It is
found that although both methods are based on calculation of the Siegert (i.e. exponentially increasing non-normalizable)
state, the methods are stable and. very accurate values of resonance energies and widths are obtainable. It is hoped that
the resonance parameters obtained here can serve as test examples for various approximate methods for calculating
resonance energies and widths.