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 Title: THE Ã2E′′ STATE OF NO3: NEW VIBRONIC CALCULATIONS Author(s): Stanton, John F. Contributor(s): Changala, Bryan Subject(s): Mini-symposium: New Ways of Understanding Molecular Spectra Abstract: The first excited electronic state of the NO$_3$ radical is a dark state just less than 1 eV above the ground state, and its vibronic features have been observed optically by the Hirota, Okumura and Miller groups. In addition, it has been directly accessed by the Neumark group via photodetachment of the nitrate anion. This $^2E^{\prime\prime}$ state represents a case where the Jahn-Teller effect is neither weak enough to be treated with low-order (linear or quadratic) models nor is it profoundly distorted to the degree that it can be accurately represented by a quasistatic lower-symmetry geometry. While efforts to treat this state with polynomial Jahn-Teller model Hamiltonians have been carried out, none of these can really be regarded as being quantitatively successful. In this work, we use newly available methodology to treat this electronic state with a semi-global potential based on permutationally invariant polynomials and report results of the corresponding energy levels and simulated photodetachment spectrum. Issue Date: 06/18/18 Publisher: International Symposium on Molecular Spectroscopy Citation Info: APS Genre: Conference Paper / Presentation Type: Text Language: English URI: http://hdl.handle.net/2142/100615 DOI: 10.15278/isms.2018.MH05 Other Identifier(s): MH05 Date Available in IDEALS: 2018-08-172018-12-12
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