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"Spectra of Field-Ionized Rydberg States of H2 & Field Ionization Properties"

July 11, 2019 - 3:00pm
Speaker: 
William Setzer
Institution: 
Wesleyan University, Middletown, CT

Abstract: Understanding ionization properties of diatomic molecules is of fundamental importance to chemical physics and has many applications. Here, I present the measured field ionization spectra of highly excited triplet H2 Rydberg states, excited from the v'' = 0, N'' = 1−3 rovibrational levels of the metastable c-state in a 6 keV fast molecular beam. The spectra are analyzed and compared to results from multichannel quantum-defect theory (MQDT). Additionally, the ionization yields of N+=1 Rydberg states n=17-27 are characterized in static electric fields up to 36 kV/cm using a model which considers a diabatic traverse of the Stark map. Control over population-transfer observed in the experiment between the N+=1 and N+=3 states of the ion core is demonstrated.   

Host: Norbert Linke

PSC 2136