Mode-dependent vibrational autoionization of NO{sub 2}.

Journal Article · Sat Nov 15 04:00:00 EST 2003 · J. Chem. Phys.

DOI:https://doi.org/10.1063/1.1618218· OSTI ID:961290

Bell, P; Aguirre, F; Grant, E R; Pratt, S T

Triple-resonance excitation and high-resolution photoelectron spectroscopy were combined to study the mode dependence of vibrational autoionization in Rydberg states of NO{sub 2}. Photoselection isolates vibrational autoionization via the symmetric stretching vibration, v{sub 1}, and the bending vibration, v{sub 2}. The previously characterized Fermi resonance between one quantum of v{sub 1} and two quanta of v{sub 2} [H. Matsui et al., J. Mol. Spectrosc. 175, 203 (1996)] allows the comparison of the vibrational autoionization matrix elements for these two modes. The squared matrix element for vibrational autoionization via the symmetric stretch is found to be approximately 35 times greater than that for the bend, which is also consistent with previous results. The results are discussed in terms of existing theoretical models for the autoionization process.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; NSF
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 961290
• Report Number(s): ANL/CHM/JA-46258
• Journal Information: J. Chem. Phys., Journal Name: J. Chem. Phys. Journal Issue: 19 ; Nov. 15, 2003 Vol. 119; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
AUTOIONIZATION
BENDING
EXCITATION
FERMI RESONANCE
MATRIX ELEMENTS
NITROGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
RYDBERG STATES
VIBRATIONAL STATES