Spectroscopic determination of the ground-state dissociation energy and isotopic shift of NaD

Chia Ching Chu; Wei Fung He; Rong Sin Lin; Yin Ji Li; Thou Jen Whang; Chin Chun Tsai

doi:10.1063/1.4991036

Spectroscopic determination of the ground-state dissociation energy and isotopic shift of NaD

Chia Ching Chu
, Wei Fung He
, Rong Sin Lin
, Yin Ji Li
, Thou Jen Whang
, Chin Chun Tsai

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Stimulated emission pumping with fluorescence depletion spectroscopy is used to determine the NaD X ¹Σ⁺ ground-state dissociation energy and its isotopic shift. A total of 230 rovibrational levels in the range 9 ≤ v″ ≤ 29 and 1 ≤ J″ ≤ 11 are observed, where v″ = 29 is about 50 cm^-1 below the dissociation limit. Analysis of the highest five vibrational levels yields the dissociation energy D_e = 15 822 ± 5 cm^-1 with a vibrational quantum number at dissociation v_D = 31.2 ± 0.1. The energy difference in the well depth of this isotopologue with respect to that of NaH is δD_e = D_e(NaH) - D_e(NaD) = -7 cm^-1. A new set of Dunham coefficients is derived to fit all the observed energy levels to within the experimental uncertainty.

Original language	English
Article number	024301
Journal	Journal of Chemical Physics
Volume	147
Issue number	2
DOIs	https://doi.org/10.1063/1.4991036
Publication status	Published - 2017 Jul 14

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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Cite this

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title = "Spectroscopic determination of the ground-state dissociation energy and isotopic shift of NaD",

abstract = "Stimulated emission pumping with fluorescence depletion spectroscopy is used to determine the NaD X 1Σ+ ground-state dissociation energy and its isotopic shift. A total of 230 rovibrational levels in the range 9 ≤ v″ ≤ 29 and 1 ≤ J″ ≤ 11 are observed, where v″ = 29 is about 50 cm-1 below the dissociation limit. Analysis of the highest five vibrational levels yields the dissociation energy De = 15 822 ± 5 cm-1 with a vibrational quantum number at dissociation vD = 31.2 ± 0.1. The energy difference in the well depth of this isotopologue with respect to that of NaH is δDe = De(NaH) - De(NaD) = -7 cm-1. A new set of Dunham coefficients is derived to fit all the observed energy levels to within the experimental uncertainty.",

author = "Chu, \{Chia Ching\} and He, \{Wei Fung\} and Lin, \{Rong Sin\} and Li, \{Yin Ji\} and Whang, \{Thou Jen\} and Tsai, \{Chin Chun\}",

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T1 - Spectroscopic determination of the ground-state dissociation energy and isotopic shift of NaD

AU - Chu, Chia Ching

AU - He, Wei Fung

AU - Lin, Rong Sin

AU - Li, Yin Ji

AU - Whang, Thou Jen

AU - Tsai, Chin Chun

PY - 2017/7/14

Y1 - 2017/7/14

N2 - Stimulated emission pumping with fluorescence depletion spectroscopy is used to determine the NaD X 1Σ+ ground-state dissociation energy and its isotopic shift. A total of 230 rovibrational levels in the range 9 ≤ v″ ≤ 29 and 1 ≤ J″ ≤ 11 are observed, where v″ = 29 is about 50 cm-1 below the dissociation limit. Analysis of the highest five vibrational levels yields the dissociation energy De = 15 822 ± 5 cm-1 with a vibrational quantum number at dissociation vD = 31.2 ± 0.1. The energy difference in the well depth of this isotopologue with respect to that of NaH is δDe = De(NaH) - De(NaD) = -7 cm-1. A new set of Dunham coefficients is derived to fit all the observed energy levels to within the experimental uncertainty.

AB - Stimulated emission pumping with fluorescence depletion spectroscopy is used to determine the NaD X 1Σ+ ground-state dissociation energy and its isotopic shift. A total of 230 rovibrational levels in the range 9 ≤ v″ ≤ 29 and 1 ≤ J″ ≤ 11 are observed, where v″ = 29 is about 50 cm-1 below the dissociation limit. Analysis of the highest five vibrational levels yields the dissociation energy De = 15 822 ± 5 cm-1 with a vibrational quantum number at dissociation vD = 31.2 ± 0.1. The energy difference in the well depth of this isotopologue with respect to that of NaH is δDe = De(NaH) - De(NaD) = -7 cm-1. A new set of Dunham coefficients is derived to fit all the observed energy levels to within the experimental uncertainty.

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JF - Journal of Chemical Physics

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Spectroscopic determination of the ground-state dissociation energy and isotopic shift of NaD

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