scholarly journals Pulsed millimeter wave fourier transform microwave spectrometer

1986 ◽  
Vol 7 (9) ◽  
pp. 1329-1338 ◽  
Author(s):  
W. F. Kolbe ◽  
B. Leskovar
Keyword(s):  
Fourier Transform ◽  
Millimeter Wave ◽  
Microwave Spectrometer

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.

A rotational spectroscopic and ab initio study of cis and trans (-)-carveol: Further insights into conformational dynamics in monoterpenes and monoterpenoids

2021 ◽  
Author(s):  
Arsh Singh Hazrah ◽  
Mohamad al-Jabiri ◽  
Raiden Speelman ◽  
Wolfgang Jaeger
Keyword(s):  
Fourier Transform ◽  
Ab Initio ◽  
Conformational Dynamics ◽  
Ab Initio Study ◽  
Chirped Pulse ◽  
Rotational Spectra ◽  
Microwave Spectrometer ◽  
Cis And Trans

Broadband rotational spectra of cis- and trans- (-) carveol were recorded using a chirped pulse Fourier transform microwave spectrometer in the 2-6 GHz region. To aid in spectroscopic assignments a...

scholarly journals New Experimental Possibilities and Future Prospects for 1-5μm Infrared Spectroscopy of Interstellar Molecules

1980 ◽  
Vol 87 ◽  
pp. 631-632
Author(s):  
Donald N. B. Hall
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Millimeter Wave ◽  
Molecular Clouds ◽  
Future Prospects ◽  
Interstellar Molecules ◽  
The Past ◽  
Evolved Stars ◽  
Large Numbers ◽  
Fabry Perot

During the past week we have heard a considerable number of papers dealing with spectroscopic observations in the 1-5μm region of the infrared. I predict that as instruments and detectors continue to improve, such observations will play a major role in the study of interstellar molecules in both molecular clouds and circumstellar clouds around evolved stars. Fourier Transform spectrometers and Fabry Perot interferometers have already yielded spectra of such sources with spectral resolution and radial velocity precision fully comparable to millimeter wave observations. The critical need is to improve the limiting magnitude of such observations by 3-5 stellar magnitudes so that one can study large numbers of sources rather than the few brightest in each class.

The structure of ScC2 (X̃2A1): A combined Fourier transform microwave/millimeter-wave spectroscopic and computational study

2020 ◽  
Vol 153 (3) ◽  
pp. 034304 ◽  
Author(s):  
M. A. Burton ◽  
Q. Cheng ◽  
D. T. Halfen ◽  
J. H. Lane ◽  
N. J. DeYonker ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Millimeter Wave ◽  
Computational Study

Observation of Carbonyl Fluoride, Ketene, Acetic Acid and Fluorocarbene Produced by an Electric Discharge within a Nozzle by Molecular Beam Fourier Transform Microwave Spectroscopy. A Reaction via a Cycloaddition for Carbonyl Fluoride and Keten?

2000 ◽  
Vol 55 (8) ◽  
pp. 695-705 ◽  
Author(s):  
D. H. Sutter ◽  
H. Dreizler
Keyword(s):  
Carbon Dioxide ◽  
Acetic Acid ◽  
Fourier Transform ◽  
Molecular Beam ◽  
Reaction Path ◽  
Microwave Spectroscopy ◽  
Electrical Discharges ◽  
Microwave Spectrometer ◽  
Precursor Molecules ◽  
Carbonyl Fluoride

Abstract A molecular beam Fourier transform microwave spectrometer, designed for the study of chemical reactions within electrical discharges, is described in detail. Applications include the production of carbonyl fluoride, ketene, acetic acid, and difluorocarbene. For the production of carbonyl fluoride and ketene with 1,1-difluoroethylene and carbon dioxide as precursor molecules a reaction path via a 2+2 cycloaddition is proposed.

Sign in / Sign up

Export Citation Format

Share Document