Some perspectives in electron momentum spectroscopy experiments

The basic challenges of electron momentum spectroscopy (EMS) as it has guided our research efforts at Carleton University are outlined. These challenges are: (a) Are the spectroscopic factors obtained in EMS equivalent to the spectroscopic factors observed in photoelectron spectroscopy? (b) Can experimental momentum profiles be related to the chemical reactivity of complex molecular systems? (c) Are the basic assumptions of (e,2e) reaction theory valid for complex molecular systems? Insights based on our efforts to address these questions are presented. (orig.)