Emission spectroscopy of two new systems of TaO

R S  Ram; P F  Bernath

doi:10.1016/S0022-2852(03)00198-X

Emission spectroscopy of two new systems of TaO

R S Ram, P F Bernath

Chemistry

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

Abstract

The TaO molecule was inadvertently formed by exciting a mixture of TaCl5 vapor and He in a microwave discharge lamp, and the spectra from the near infrared to the near ultraviolet regions were recorded at high resolution using a Fourier transform spectrometer. Two new bands observed near 23520 and 25010 cm(-1) have been identified as 0-0 bands of two new electronic transitions. The lower state of these transitions is the same as the lower state of a transition near 10000 cm(-1) recently seen by Al-Khalili et al. [J. Mol. Spectrosc. 198 (1999) 230]. A combined fit of the lines of the new transitions and those of the near infrared transition has provided an improved set of spectroscopic constants. The nature of the new electronic transitions is not clear and we have considered both the (2)Delta(5/2)-(2)Pi(3/2) and the (4)Pi(5/2)-(4)Sigma(3/2)(-) possibilities. (C) 2003 Elsevier Inc. All rights reserved.

Original language	English
Pages (from-to)	712
Number of pages	6
Journal	JOURNAL OF MOLECULAR SPECTROSCOPY
Volume	221
Issue number	1
DOIs	https://doi.org/10.1016/S0022-2852(03)00198-X
Publication status	Published - Sept 2003

Keywords

CORE MODEL POTENTIALS
VALENCE BASIS-SETS
METAL ELEMENTS SC
ROTATIONAL ANALYSIS
BANDS

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10.1016/S0022-2852(03)00198-X

Cite this

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title = "Emission spectroscopy of two new systems of TaO",

abstract = "The TaO molecule was inadvertently formed by exciting a mixture of TaCl5 vapor and He in a microwave discharge lamp, and the spectra from the near infrared to the near ultraviolet regions were recorded at high resolution using a Fourier transform spectrometer. Two new bands observed near 23520 and 25010 cm(-1) have been identified as 0-0 bands of two new electronic transitions. The lower state of these transitions is the same as the lower state of a transition near 10000 cm(-1) recently seen by Al-Khalili et al. [J. Mol. Spectrosc. 198 (1999) 230]. A combined fit of the lines of the new transitions and those of the near infrared transition has provided an improved set of spectroscopic constants. The nature of the new electronic transitions is not clear and we have considered both the (2)Delta(5/2)-(2)Pi(3/2) and the (4)Pi(5/2)-(4)Sigma(3/2)(-) possibilities. (C) 2003 Elsevier Inc. All rights reserved.",

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T1 - Emission spectroscopy of two new systems of TaO

AU - Ram, R S

AU - Bernath, P F

PY - 2003/9

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N2 - The TaO molecule was inadvertently formed by exciting a mixture of TaCl5 vapor and He in a microwave discharge lamp, and the spectra from the near infrared to the near ultraviolet regions were recorded at high resolution using a Fourier transform spectrometer. Two new bands observed near 23520 and 25010 cm(-1) have been identified as 0-0 bands of two new electronic transitions. The lower state of these transitions is the same as the lower state of a transition near 10000 cm(-1) recently seen by Al-Khalili et al. [J. Mol. Spectrosc. 198 (1999) 230]. A combined fit of the lines of the new transitions and those of the near infrared transition has provided an improved set of spectroscopic constants. The nature of the new electronic transitions is not clear and we have considered both the (2)Delta(5/2)-(2)Pi(3/2) and the (4)Pi(5/2)-(4)Sigma(3/2)(-) possibilities. (C) 2003 Elsevier Inc. All rights reserved.

AB - The TaO molecule was inadvertently formed by exciting a mixture of TaCl5 vapor and He in a microwave discharge lamp, and the spectra from the near infrared to the near ultraviolet regions were recorded at high resolution using a Fourier transform spectrometer. Two new bands observed near 23520 and 25010 cm(-1) have been identified as 0-0 bands of two new electronic transitions. The lower state of these transitions is the same as the lower state of a transition near 10000 cm(-1) recently seen by Al-Khalili et al. [J. Mol. Spectrosc. 198 (1999) 230]. A combined fit of the lines of the new transitions and those of the near infrared transition has provided an improved set of spectroscopic constants. The nature of the new electronic transitions is not clear and we have considered both the (2)Delta(5/2)-(2)Pi(3/2) and the (4)Pi(5/2)-(4)Sigma(3/2)(-) possibilities. (C) 2003 Elsevier Inc. All rights reserved.

KW - CORE MODEL POTENTIALS

KW - VALENCE BASIS-SETS

KW - METAL ELEMENTS SC

KW - ROTATIONAL ANALYSIS

KW - BANDS

U2 - 10.1016/S0022-2852(03)00198-X

DO - 10.1016/S0022-2852(03)00198-X

M3 - Article

SN - 0022-2852

VL - 221

SP - 712

JO - JOURNAL OF MOLECULAR SPECTROSCOPY

JF - JOURNAL OF MOLECULAR SPECTROSCOPY

IS - 1

ER -