EXPERIMENTAL EVIDENCE OF THE ν3 MODE IN NO3 VIA SLOW PHOTOELECTRON VELOCITY-MAP IMAGING OF COLD NO3−

Permalink

https://hdl.handle.net/2142/104265

Title: EXPERIMENTAL EVIDENCE OF THE ν3 MODE IN NO3 VIA SLOW PHOTOELECTRON VELOCITY-MAP IMAGING OF COLD NO3−
Author(s): Babin, Mark C
Contributor(s): Neumark, Daniel ; Stanton, John F.; DeVine, Jessalyn A.
Issue Date: 2019-06-18
Keyword(s): Radicals
Abstract: "With five electronic states within 2 eV, the nitrate radical (NO$_3$) has a rich vibronic landscape for which photoelectron spectroscopy is an ideal probe. Here, we use slow photoelectron velocity map imaging of cryogenically cooled anions (cryo-SEVI), a high-resolution variant of anion photoelectron spectroscopy, to investigate the vibronic structure of the $\tilde{X}^2A'_2$ state of NO$_3$. Our cryo-SEVI spectra are in excellent agreement with Franck-Condon simulations produced using a three-state K\""{o}ppel-Domke-Cederbaum (KDC) Hamiltonian constructed for the NO$_3$ radical. Together, the experimental and simulated spectra provide clear evidence that the $\nu_3$ fundamental resides near 1060 cm$^{-1}$, resolving a long-standing controversy surrounding this vibrational fundamental. Further, the appearance of activity along the $\nu_4$ mode in this cryogenically-cold system verifies its activity through a Herzberg-Teller interaction, rather than as a hot band as previously suggested."
Publisher: International Symposium on Molecular Spectroscopy
Type of Resource: text
Language: English
Permalink: http://hdl.handle.net/2142/104265
DOI: 10.15278/isms.2019.TD06