High-resolution infrared emission spectrum of InF

1994 ◽  
Vol 72 (11-12) ◽  
pp. 1213-1217 ◽  
Author(s):  
T. Karkanis ◽  
M. Dulick ◽  
Z. Morbi ◽  
J. B. White ◽  
P. F. Bernath
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Emission Spectrum ◽  
Ground State ◽  
Infrared Emission ◽  
Fourier Transform Spectrometer

A high-resolution infrared emission spectrum of InF was recorded with a Fourier transform spectrometer. A total of 2664 rotational lines from ν = 1 → 0 to ν = 12 → 11 were measured for the major isotopomer 115InF and 179 lines for ν = 1 → 0 and ν = 2 → 1 for the minor isotope 113InF in the X1Σ+ ground state. Revised Dunham Yij constants for each isotopomer as well as isotopically invariant Dunham Uij constants are reported. Also, an effective Born–Oppenheimer potential was determined by fitting the data directly to the eigenvalues of a parameterized potential.

The antisymmetric stretching fundamental band of free MgD2

2004 ◽  
Vol 82 (6) ◽  
pp. 947-950 ◽  
Author(s):  
Alireza Shayesteh ◽  
Dominique RT Appadoo ◽  
Iouli Gordon ◽  
Peter F Bernath
Keyword(s):  
Fourier Transform ◽  
Emission Spectrum ◽  
Electrical Discharge ◽  
Bond Distance ◽  
Infrared Emission ◽  
Fourier Transform Spectrometer ◽  
High Temperature Furnace ◽  
Vibration Rotation ◽  
First Time ◽  
Temperature Furnace

The gaseous MgD2 molecule has been synthesized for the first time in an electrical discharge inside a high-temperature furnace. The high-resolution infrared emission spectrum of MgD2 was recorded with a Fourier transform spectrometer, and the antisymmetric stretching mode (v3) was detected near 1176.5 cm–1. The v3 band was rotationally analyzed, and the r0 Mg—D bond distance was determined to be 1.700 874(8) Å.Key words: gaseous MgD2, vibration-rotation emission spectrum, Mg-D bond distance.

High Resolution IR-Spectra of Furane and Thiophene

1993 ◽  
Vol 48 (12) ◽  
pp. 1193-1202 ◽  
Author(s):  
B. Pankoke ◽  
K. M. T. Yamada ◽  
G. Winnewisser
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Ground State ◽  
Fourier Transform Spectrometer ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer ◽  
Out Of Plane ◽  
The University ◽  
Line Positions ◽  
Microwave Data

Åbstract The spectra of the out-of-plane fundamental band of furane (C4H4O) centered at 744 cm -1 and of thiophene (C4H4S) at 712 cm -1 were measured in Doppler-limited resolution with a diode-laser spectrometer at Köln and with a high-resolution Fourier transform spectrometer at the University of Gießen. An interactive Loomis-Wood program was applied to identify the c-type transitions of furane and thiophene. The molecular parameters were determined from the observed line positions and the available microwave data by least-squares-fits using Watson's A-reduced Hamiltonian. Some relations among parameters appearing in different formulations of the Hamiltonian are represented explicitly in connection with the derivation of the unreduced constants. The unreduced constants were derived for both molecules using the planarity relations. We determined the inertial defects to be ≈ 0.05 amuÅ 2 in the ground state and ≈ -0.2 amuÅ 2 in the excited state for both furane and thiophene.

The infrared emission spectra of LiF and HF

1991 ◽  
Vol 69 (11) ◽  
pp. 1659-1671 ◽  
Author(s):  
H. G. Hedderich ◽  
C. I. Frum ◽  
R. Engleman Jr. ◽  
P. F. Bernath
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Infrared Spectrum ◽  
Key Words ◽  
Infrared Spectra ◽  
Ground State ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Vibrational Ground State ◽  
J 13

The high resolution infrared spectrum of LiF has been measured in emission with the McMath Fourier transform interferometer at Kitt Peak. A total of 800 lines with ν = 1 → 0 to ν = 8 → 7 of the main isotopomer, 7LiF, and 250 lines with ν = 1 → 0 to ν = 3 → 2 of the minor isotopomer, 6LiF, were observed. These ro-vibrational transitions and the pure rotational transitions from the literature were fit to a set of Dunham coefficients Yij and a set of mass-reduced Dunham coefficients Uij. The same spectrum shows 13 pure rotational emission transitions of HF in the vibrational ground state with J = 13 → 12 to J = 25 → 24. These transitions were used to determine an improved set of rotational constants for HF. Key words: infrared spectra, LiF, HF.

Ground state molecular parameters of phosphine, PH3, from the simultaneous analysis of the high-resolution infrared, microwave and submillimeterwave spectra

1985 ◽  
Vol 50 (11) ◽  
pp. 2480-2492 ◽  
Author(s):  
Soňa Přádná ◽  
Dušan Papoušek ◽  
Jyrki Kauppinen ◽  
Sergei P. Belov ◽  
Andrei F. Krupnov ◽  
...  
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Ground State ◽  
Unitary Transformation ◽  
Point Of View ◽  
Acoustic Detection ◽  
Molecular Parameters ◽  
Microwave Spectrometer ◽  
Fourier Transform Spectra ◽  
First Time

Fourier transform spectra of the ν2 band of PH3 have been remeasured with 0.0045 cm-1 resolution. Ground state combination differences from these data have been fitted simultaneously with the microwave and submillimeterwave data to determine the ground state spectroscopical parameters of PH3 including the parameters of the Δk = ± 3n interactions. The correlation between the latter parameters has been discussed from the point of view of the existence of two equivalent effective rotational operators which are related by a unitary transformation. The ΔJ = 0, +1, ΔK = 0 (A1 ↔ A2, E ↔ E) rotational transitions in the ν2 and ν4 states have been measured for the first time by using a microwave spectrometer and a radiofrequency spectrometer with acoustic detection.

High resolution Fourier spectroscopy of P2 infrared emission spectrum

1978 ◽  
Vol 72 (2) ◽  
pp. 189-199 ◽  
Author(s):  
C Amiot ◽  
C Effantin ◽  
J d'Incan ◽  
J Verges
Keyword(s):  
High Resolution ◽  
Emission Spectrum ◽  
Infrared Emission ◽  
Fourier Spectroscopy

High-resolution Fourier-transform infrared spectroscopy of the Coriolis coupled ground state and ν7 mode of ketenimine

2011 ◽  
Vol 134 (23) ◽  
pp. 234306 ◽  
Author(s):  
Michael K. Bane ◽  
Evan G. Robertson ◽  
Christopher D. Thompson ◽  
Chris Medcraft ◽  
Dominique R. T. Appadoo ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
High Resolution ◽  
Fourier Transform Infrared Spectroscopy ◽  
Ground State ◽  
Fourier Transform Infrared
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