Observation of the shallow 2 Π 1 state of NaH

Chia Ching Chu; Hsien Yu Huang; Hsiang Chin Lin; Yi Hsiang Hsiao; Thou Jen Whang; Chin Chun Tsai

doi:10.1063/1.5065460

Observation of the shallow 2 Π 1 state of NaH

Chia Ching Chu, Hsien Yu Huang, Hsiang Chin Lin, Yi Hsiang Hsiao, Thou Jen Whang, Chin Chun Tsai

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Abstract

The 2 ¹Π state of NaH has been observed up to the last bound vibrational level using pulsed optical-optical double resonance fluorescence depletion spectroscopy. A total of 20 rovibrational energy levels (v = 2-4 and J = 1-9) were assigned to this electronic state by means of comparing the successive rovibrational spectra to the eigenvalues of the ab initio potential energy curve. The decrease of background fluorescence near the atomic asymptotic limit Na(3d) + H(1s) is an indication of reaching the dissociation limit of the NaH 2 ¹Π state. Unobserved rovibrational levels (v = 0 and 1) are due to poor Franck-Condon overlap of 2 ¹Π ← A ¹Σ⁺ transition within the accessible rovibrational levels of intermediate A ¹Σ⁺ state of this work.

Original language	English
Article number	024303
Journal	Journal of Chemical Physics
Volume	150
Issue number	2
DOIs	https://doi.org/10.1063/1.5065460
Publication status	Published - 2019 Jan 14

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1063/1.5065460

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@article{372732cf00dc41e9988e22653ba45116,

title = "Observation of the shallow 2 Π 1 state of NaH",

abstract = "The 2 1Π state of NaH has been observed up to the last bound vibrational level using pulsed optical-optical double resonance fluorescence depletion spectroscopy. A total of 20 rovibrational energy levels (v = 2-4 and J = 1-9) were assigned to this electronic state by means of comparing the successive rovibrational spectra to the eigenvalues of the ab initio potential energy curve. The decrease of background fluorescence near the atomic asymptotic limit Na(3d) + H(1s) is an indication of reaching the dissociation limit of the NaH 2 1Π state. Unobserved rovibrational levels (v = 0 and 1) are due to poor Franck-Condon overlap of 2 1Π ← A 1Σ+ transition within the accessible rovibrational levels of intermediate A 1Σ+ state of this work.",

author = "Chu, {Chia Ching} and Huang, {Hsien Yu} and Lin, {Hsiang Chin} and Hsiao, {Yi Hsiang} and Whang, {Thou Jen} and Tsai, {Chin Chun}",

note = "Funding Information: We gratefully acknowledge the support of the Ministry of Science and Technology, Taiwan under Grant Nos. MOST 102-2113-M-006-011 and MOST 107-2113-M-006-007. Chia-Ching Chu would like to thank Rui-En Hsu for her helpful suggestions. Publisher Copyright: {\textcopyright} 2019 Author(s).",

year = "2019",

month = jan,

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doi = "10.1063/1.5065460",

language = "English",

volume = "150",

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T1 - Observation of the shallow 2 Π 1 state of NaH

AU - Chu, Chia Ching

AU - Huang, Hsien Yu

AU - Lin, Hsiang Chin

AU - Hsiao, Yi Hsiang

AU - Whang, Thou Jen

AU - Tsai, Chin Chun

N1 - Funding Information: We gratefully acknowledge the support of the Ministry of Science and Technology, Taiwan under Grant Nos. MOST 102-2113-M-006-011 and MOST 107-2113-M-006-007. Chia-Ching Chu would like to thank Rui-En Hsu for her helpful suggestions. Publisher Copyright: © 2019 Author(s).

PY - 2019/1/14

Y1 - 2019/1/14

N2 - The 2 1Π state of NaH has been observed up to the last bound vibrational level using pulsed optical-optical double resonance fluorescence depletion spectroscopy. A total of 20 rovibrational energy levels (v = 2-4 and J = 1-9) were assigned to this electronic state by means of comparing the successive rovibrational spectra to the eigenvalues of the ab initio potential energy curve. The decrease of background fluorescence near the atomic asymptotic limit Na(3d) + H(1s) is an indication of reaching the dissociation limit of the NaH 2 1Π state. Unobserved rovibrational levels (v = 0 and 1) are due to poor Franck-Condon overlap of 2 1Π ← A 1Σ+ transition within the accessible rovibrational levels of intermediate A 1Σ+ state of this work.

AB - The 2 1Π state of NaH has been observed up to the last bound vibrational level using pulsed optical-optical double resonance fluorescence depletion spectroscopy. A total of 20 rovibrational energy levels (v = 2-4 and J = 1-9) were assigned to this electronic state by means of comparing the successive rovibrational spectra to the eigenvalues of the ab initio potential energy curve. The decrease of background fluorescence near the atomic asymptotic limit Na(3d) + H(1s) is an indication of reaching the dissociation limit of the NaH 2 1Π state. Unobserved rovibrational levels (v = 0 and 1) are due to poor Franck-Condon overlap of 2 1Π ← A 1Σ+ transition within the accessible rovibrational levels of intermediate A 1Σ+ state of this work.

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Observation of the shallow 2 Π 1 state of NaH

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