Rotational interactions in autoionizing Rydberg states of ammonia.
Double-resonance ionization spectra via selected rotational levels of the {tilde C}' {sup 1}A'(0100) state of ammonia show direct evidence for rotational-electronic perturbations between Rydberg series converging to different rotational states of NH{sub 3}{sup +} {tilde X} {sup 2}A{sub 2}' (0100), and for rotational autoionization when it is energetically allowed. The simplicity of the double resonance spectra is quite striking, and rotational interactions with {Delta}N{sup +}=-1, {Delta}K{sup +}=0 are found to be most important. The results have implications for understanding intensities in rotationally resolved threshold photoelectron spectra and for extracting ionization onsets from photoionization mass spectra.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 942436
- Report Number(s):
- ANL/CHM/JA-31429
- Journal Information:
- Chem. Phys. Lett., Journal Name: Chem. Phys. Lett. Journal Issue: 1999 Vol. 303; ISSN CHPLBC; ISSN 0009-2614
- Country of Publication:
- United States
- Language:
- ENGLISH
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