Detection of the Thorium Dimer via Two-Dimensional Fluorescence Spectroscopy

Timothy Steimle, Damian L. Kokkin, Seth Muscarella, Tongmei Ma

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Thorium dimer, Th<inf>2</inf>, has been detected in the gas phase via two-dimensional laser-induced fluorescence electronic spectroscopy. The visible excitation spectra are broad, unstructured features with an approximate line width of 10 cm<sup>-1</sup>. The spectrum consists of vibrational progressions associated with excitation from the ground electronic state to two different excited electronic states. The dispersed fluorescence was analyzed to give ground state vibrational constants ω<inf>e</inf> = 134.86 ± 0.66 cm<sup>-1</sup> and ω<inf>e</inf>x<inf>e</inf> = 0.50 ± 0.04 cm<sup>-1</sup>. Vibrational constants ω<inf>e</inf> = 169 ± 3 and 212 ± 2 cm<sup>-1</sup> were determined for the two excited electronic states. The radiative lifetimes were measured. A comparison with theoretical predictions is given. (Figure Presented).

Original languageEnglish (US)
Pages (from-to)9281-9285
Number of pages5
JournalJournal of Physical Chemistry A
Volume119
Issue number35
DOIs
StatePublished - Sep 3 2015

Fingerprint

Thorium
thorium
Fluorescence spectroscopy
Electronic states
Dimers
dimers
fluorescence
Fluorescence
electronics
spectroscopy
Linewidth
Ground state
radiative lifetime
Gases
progressions
Spectroscopy
laser induced fluorescence
excitation
Lasers
vapor phases

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Detection of the Thorium Dimer via Two-Dimensional Fluorescence Spectroscopy. / Steimle, Timothy; Kokkin, Damian L.; Muscarella, Seth; Ma, Tongmei.

In: Journal of Physical Chemistry A, Vol. 119, No. 35, 03.09.2015, p. 9281-9285.

Research output: Contribution to journalArticle

Steimle, Timothy ; Kokkin, Damian L. ; Muscarella, Seth ; Ma, Tongmei. / Detection of the Thorium Dimer via Two-Dimensional Fluorescence Spectroscopy. In: Journal of Physical Chemistry A. 2015 ; Vol. 119, No. 35. pp. 9281-9285.
@article{df19f0284d9946749f35c96a1a1c57f2,
title = "Detection of the Thorium Dimer via Two-Dimensional Fluorescence Spectroscopy",
abstract = "Thorium dimer, Th2, has been detected in the gas phase via two-dimensional laser-induced fluorescence electronic spectroscopy. The visible excitation spectra are broad, unstructured features with an approximate line width of 10 cm-1. The spectrum consists of vibrational progressions associated with excitation from the ground electronic state to two different excited electronic states. The dispersed fluorescence was analyzed to give ground state vibrational constants ωe = 134.86 ± 0.66 cm-1 and ωexe = 0.50 ± 0.04 cm-1. Vibrational constants ωe = 169 ± 3 and 212 ± 2 cm-1 were determined for the two excited electronic states. The radiative lifetimes were measured. A comparison with theoretical predictions is given. (Figure Presented).",
author = "Timothy Steimle and Kokkin, {Damian L.} and Seth Muscarella and Tongmei Ma",
year = "2015",
month = "9",
day = "3",
doi = "10.1021/acs.jpca.5b06608",
language = "English (US)",
volume = "119",
pages = "9281--9285",
journal = "Journal of Physical Chemistry A",
issn = "1089-5639",
publisher = "American Chemical Society",
number = "35",

}

TY - JOUR

T1 - Detection of the Thorium Dimer via Two-Dimensional Fluorescence Spectroscopy

AU - Steimle, Timothy

AU - Kokkin, Damian L.

AU - Muscarella, Seth

AU - Ma, Tongmei

PY - 2015/9/3

Y1 - 2015/9/3

N2 - Thorium dimer, Th2, has been detected in the gas phase via two-dimensional laser-induced fluorescence electronic spectroscopy. The visible excitation spectra are broad, unstructured features with an approximate line width of 10 cm-1. The spectrum consists of vibrational progressions associated with excitation from the ground electronic state to two different excited electronic states. The dispersed fluorescence was analyzed to give ground state vibrational constants ωe = 134.86 ± 0.66 cm-1 and ωexe = 0.50 ± 0.04 cm-1. Vibrational constants ωe = 169 ± 3 and 212 ± 2 cm-1 were determined for the two excited electronic states. The radiative lifetimes were measured. A comparison with theoretical predictions is given. (Figure Presented).

AB - Thorium dimer, Th2, has been detected in the gas phase via two-dimensional laser-induced fluorescence electronic spectroscopy. The visible excitation spectra are broad, unstructured features with an approximate line width of 10 cm-1. The spectrum consists of vibrational progressions associated with excitation from the ground electronic state to two different excited electronic states. The dispersed fluorescence was analyzed to give ground state vibrational constants ωe = 134.86 ± 0.66 cm-1 and ωexe = 0.50 ± 0.04 cm-1. Vibrational constants ωe = 169 ± 3 and 212 ± 2 cm-1 were determined for the two excited electronic states. The radiative lifetimes were measured. A comparison with theoretical predictions is given. (Figure Presented).

UR - http://www.scopus.com/inward/record.url?scp=84941082874&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84941082874&partnerID=8YFLogxK

U2 - 10.1021/acs.jpca.5b06608

DO - 10.1021/acs.jpca.5b06608

M3 - Article

AN - SCOPUS:84941082874

VL - 119

SP - 9281

EP - 9285

JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

SN - 1089-5639

IS - 35

ER -