Rotationally resolved photoelectron spectra in (2 + 1) resonance-enhanced multiphoton ionization of NO via the C 2Π Rydberg state

✍ Scribed by Kwanghsi Wang; V. McKoy; H. Rudolph

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 579 KB
• Volume: 217
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(93)e1440-r

✦ Synopsis

Results of theoretical studies of rotational branching ratios and photoelectron angular distributions for (2 + 1) resonance-enhanced multiphoton ionization (REMPI) of NO via the Qz, ( 13.5) branch of the C *H(3px) Rydberg state are reported and compared with recent measurements. Both calculated and measured spectra reveal that the AN= + 2 peaks (ee line), which are very weak for the laser polarization parallel to the direction of photoelectron detection, have about l/4 the intensity of the main AN=0 peak when the laser polarization is rotated by 90". This dependence on laser polarization is due to strong interference among partial wave components of the photoelectron matrix element. This behavior is very evident in the photoelectron angular distributions. In addition, a Cooper minimum is predicted in the d wave of the 3pr+k8 ionization channel.