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High-resolution electronic spectra of yttrium oxide (YO): The D 2 Σ + – X 2 Σ + transition

The D 2 Σ + − X 2 Σ + electronic absorption spectrum of the astrophysically relevant yttrium oxide (YO) molecule has been recorded for the first time in the 400–440 nm region using laser induced fluorescence. YO molecules are produced by corona discharge of oxygen between the tips of two yttrium nee... Full description

Journal Title: The Journal of Chemical Physics 21 March 2017, Vol.146(11)
Main Author: Zhang, Deping
Other Authors: Zhang, Qiang , Zhu, Boxing , Gu, Jingwang , Suo, Bingbing , Chen, Yang , Zhao, Dongfeng
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0021-9606 ; E-ISSN: 1089-7690 ; DOI: 10.1063/1.4978335
Link: http://dx.doi.org/10.1063/1.4978335
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recordid: aip_complete10.1063/1.4978335
title: High-resolution electronic spectra of yttrium oxide (YO): The D 2 Σ + – X 2 Σ + transition
format: Article
creator:
  • Zhang, Deping
  • Zhang, Qiang
  • Zhu, Boxing
  • Gu, Jingwang
  • Suo, Bingbing
  • Chen, Yang
  • Zhao, Dongfeng
subjects:
  • Articles
ispartof: The Journal of Chemical Physics, 21 March 2017, Vol.146(11)
description: The D 2 Σ + − X 2 Σ + electronic absorption spectrum of the astrophysically relevant yttrium oxide (YO) molecule has been recorded for the first time in the 400–440 nm region using laser induced fluorescence. YO molecules are produced by corona discharge of oxygen between the tips of two yttrium needles in a supersonic jet expansion. An unambiguous spectroscopic identification of the D 2 Σ + − X 2 Σ + transition becomes possible from a combined analysis of the moderate-resolution laser excitation spectrum and dispersed fluorescence spectrum. We have also performed multi-state complete active space second order perturbation theory calculations on the first six doublets of YO, and the results support our assignment of the D 2 Σ + state. Accurate spectroscopic constants for D 2 Σ + ν ′ = 0 and 1 levels have been determined from a rotational analysis of the high resolution spectra that are recorded with a resolution of ∼0.018 cm −1 . Severe perturbations are observed in the experimental spectra and are considered to originate from interactions with at least one nearby 2/4 Π electronic state, e.g., the undetected C 2 Π state. We have also measured the radiative lifetimes of B 2 Σ + ν ′ = 0, and D 2 Σ + ν ′ = 0 and 1 states, based on which the B 2 Σ + − X 2 Σ + (0, 0) and D 2 Σ + − X 2 Σ + (0/1, 0) band oscillator strengths have been determined.
language: eng
source:
identifier: ISSN: 0021-9606 ; E-ISSN: 1089-7690 ; DOI: 10.1063/1.4978335
fulltext: fulltext
issn:
  • 0021-9606
  • 1089-7690
  • 00219606
  • 10897690
url: Link


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titleHigh-resolution electronic spectra of yttrium oxide (YO): The D 2 Σ + – X 2 Σ + transition
creatorZhang, Deping ; Zhang, Qiang ; Zhu, Boxing ; Gu, Jingwang ; Suo, Bingbing ; Chen, Yang ; Zhao, Dongfeng
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descriptionThe D 2 Σ + − X 2 Σ + electronic absorption spectrum of the astrophysically relevant yttrium oxide (YO) molecule has been recorded for the first time in the 400–440 nm region using laser induced fluorescence. YO molecules are produced by corona discharge of oxygen between the tips of two yttrium needles in a supersonic jet expansion. An unambiguous spectroscopic identification of the D 2 Σ + − X 2 Σ + transition becomes possible from a combined analysis of the moderate-resolution laser excitation spectrum and dispersed fluorescence spectrum. We have also performed multi-state complete active space second order perturbation theory calculations on the first six doublets of YO, and the results support our assignment of the D 2 Σ + state. Accurate spectroscopic constants for D 2 Σ + ν ′ = 0 and 1 levels have been determined from a rotational analysis of the high resolution spectra that are recorded with a resolution of ∼0.018 cm −1 . Severe perturbations are observed in the experimental spectra and are considered to originate from interactions with at least one nearby 2/4 Π electronic state, e.g., the undetected C 2 Π state. We have also measured the radiative lifetimes of B 2 Σ + ν ′ = 0, and D 2 Σ + ν ′ = 0 and 1 states, based on which the B 2 Σ + − X 2 Σ + (0, 0) and D 2 Σ + − X 2 Σ + (0/1, 0) band oscillator strengths have been determined.
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descriptionThe D 2 Σ + − X 2 Σ + electronic absorption spectrum of the astrophysically relevant yttrium oxide (YO) molecule has been recorded for the first time in the 400–440 nm region using laser induced fluorescence. YO molecules are produced by corona discharge of oxygen between the tips of two yttrium needles in a supersonic jet expansion. An unambiguous spectroscopic identification of the D 2 Σ + − X 2 Σ + transition becomes possible from a combined analysis of the moderate-resolution laser excitation spectrum and dispersed fluorescence spectrum. We have also performed multi-state complete active space second order perturbation theory calculations on the first six doublets of YO, and the results support our assignment of the D 2 Σ + state. Accurate spectroscopic constants for D 2 Σ + ν ′ = 0 and 1 levels have been determined from a rotational analysis of the high resolution spectra that are recorded with a resolution of ∼0.018 cm −1 . Severe perturbations are observed in the experimental spectra and are considered to originate from interactions with at least one nearby 2/4 Π electronic state, e.g., the undetected C 2 Π state. We have also measured the radiative lifetimes of B 2 Σ + ν ′ = 0, and D 2 Σ + ν ′ = 0 and 1 states, based on which the B 2 Σ + − X 2 Σ + (0, 0) and D 2 Σ + − X 2 Σ + (0/1, 0) band oscillator strengths have been determined.
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abstractThe D 2 Σ + − X 2 Σ + electronic absorption spectrum of the astrophysically relevant yttrium oxide (YO) molecule has been recorded for the first time in the 400–440 nm region using laser induced fluorescence. YO molecules are produced by corona discharge of oxygen between the tips of two yttrium needles in a supersonic jet expansion. An unambiguous spectroscopic identification of the D 2 Σ + − X 2 Σ + transition becomes possible from a combined analysis of the moderate-resolution laser excitation spectrum and dispersed fluorescence spectrum. We have also performed multi-state complete active space second order perturbation theory calculations on the first six doublets of YO, and the results support our assignment of the D 2 Σ + state. Accurate spectroscopic constants for D 2 Σ + ν ′ = 0 and 1 levels have been determined from a rotational analysis of the high resolution spectra that are recorded with a resolution of ∼0.018 cm −1 . Severe perturbations are observed in the experimental spectra and are considered to originate from interactions with at least one nearby 2/4 Π electronic state, e.g., the undetected C 2 Π state. We have also measured the radiative lifetimes of B 2 Σ + ν ′ = 0, and D 2 Σ + ν ′ = 0 and 1 states, based on which the B 2 Σ + − X 2 Σ + (0, 0) and D 2 Σ + − X 2 Σ + (0/1, 0) band oscillator strengths have been determined.
pubAIP Publishing LLC
doi10.1063/1.4978335
pages114303
date2017-03-21