Stieltjes-Moment-Theory Technique for Calculating Resonance Widths
Resonant autoionizing states of molecules and autodetaching states of molecular negative ions play important roles in many collision phenomena involving low energy electrons, e.g. dissociative attachment, associative and Penning ionization, dissociative recombination, etc.1,2 Although the formal theory3 of resonant scattering of electrons from molecules has been developed during the past 15 years, there have been very few quantitive studies of resonant phenomena even in diatomic molecules. The main reason for this has been the lack of practical methods for calculating the width of molecular resonances within the Born-Oppenheimer approximation.4 This situation has prevailed for quite some time, even though methods for calculating the resonance parameters of atoms5 and the potential energy curves of molecular resonances6 have been available.
KeywordsResonance Width Resonance Parameter Internuclear Distance Broad Resonance Background Continuum
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