Valence-Shell Autoionization of NO

Published

June 1, 2000

Author(s)

S H. Southworth, T A. Ferrett, Jonathan E. Hardis, Albert C. Parr, J L. Dehmer

Abstract

Autoionization of valence and Rydberg states in NO over the 12.5-18 eV photon energy range was studied by vibrationally resolved photoelectron spectroscopy of the 2π orbital. Complex, oscillatory structure is observed in NO⁺ (2Π^-1) X¹ς⁺ partial cross sections, branching ratios, and photoelectron and anisotropy parameters due to autoionizing valence states and Rydberg states associated with the 1Π^-1 and 5ς^-1 channels. Autoionization of the 5ς->npΠς(upsilon'}=0), n=3-5 Rydberg states leading to the (5ς¹) b³II state of NO⁺ produces very high vibrational levels of (2π^-1) X¹ς⁺. Autoionization of the 5ς-> 3pπ(upsilon'}=0) Rydberg state was characterized by resonance profiles of photoelectron cross sections and angular distributions.

Citation

Physics Essays

Volume

13

Issue

No. 2-3

Pub Type

Journals

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Keywords

asymmetry parameters, autoionization, branching ratios, photoelectron spectroscopy

Citation

Southworth, S. , Ferrett, T. , Hardis, J. , Parr, A. and Dehmer, J. (2000), Valence-Shell Autoionization of NO, Physics Essays, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=841524 (Accessed October 11, 2025)