Pure rotational transitions of allene in excited vibrational states observed by microwave Fourier transform spectroscopy using Stark and double resonance techniques

1987 ◽  
Vol 87 (8) ◽  
pp. 4465-4470 ◽  
Author(s):  
B. Vogelsanger ◽  
A. Bauder
Keyword(s):  
Fourier Transform ◽  
Double Resonance ◽  
Fourier Transform Spectroscopy ◽  
Vibrational States ◽  
Rotational Transitions

scholarly journals A Microwave Fourier Transform Technique using Double Resonance Modulation

1987 ◽  
Vol 42 (4) ◽  
pp. 392-394 ◽  
Author(s):  
W. Stahl ◽  
J. Gripp ◽  
N. Heineking ◽  
H. Dreizler
Keyword(s):  
Fourier Transform ◽  
Double Resonance ◽  
Fourier Transform Spectroscopy ◽  
Resonance Technique ◽  
Double Resonances

We present a further modification of the double resonance technique in microwave FOURIER transform spectroscopy. The method is promising for the search of double resonances. It is demonstrated by three examples.

scholarly journals Deuterium Quadrupole Coupling Constants of Deuterohalogenoacetylens

1988 ◽  
Vol 43 (8-9) ◽  
pp. 755-757 ◽  
Author(s):  
N. Heineking ◽  
M. Andolfatto ◽  
C. Kruse ◽  
W. Eberstein ◽  
H. Dreizler
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Fourier Transform Spectroscopy ◽  
Spin Rotation ◽  
Coupling Constants ◽  
Centrifugal Distortion ◽  
Quadrupole Coupling ◽  
Nuclear Quadrupole ◽  
Rotational Transitions

Abstract Employing the high resolution of microwave Fourier transform spectroscopy, we investigated the lowest rotational transitions of fluoro-, bromo-, and iodoacetylene-d. Along with the rotational, centrifugal distortion, halogen nuclear quadrupole, and halogen spin-rotation coupling constants, we determined the deuterium quadrupole coupling constants of bromo-and iodoacetylene-d. For fluoroacetylene-d, we redetermined the deuterium nuclear quadrupole coupling constants with higher accuracy.

scholarly journals Radiofrequency Microwave Double Resonance Experiments in Fourier Transform Technique

1988 ◽  
Vol 43 (3) ◽  
pp. 280-282 ◽  
Author(s):  
N. Heineking ◽  
W. Stahl ◽  
H. Dreizler
Keyword(s):  
Fourier Transform ◽  
Frequency Domain ◽  
Time Domain ◽  
Double Resonance ◽  
Fourier Transform Spectroscopy ◽  
Microwave Spectroscopy ◽  
Valuable Method ◽  
The Time Domain

Abstract Radiofrequency microwave double resonance has proved as a valuable method in microwave spectroscopy in the frequency domain. We present comparable experiments in the time domain Fourier transform spectroscopy.

Infrared Microwave Double-Resonance Investigations on Trifluoromethyljodide (CF3I)

1982 ◽  
Vol 37 (4) ◽  
pp. 371-375
Author(s):  
E. Ibisch ◽  
U. Andresen
Keyword(s):  
Double Resonance ◽  
Vibrational Transition ◽  
Vibrational States ◽  
Rotational Transitions

Abstract An additional set of infrared microwave double-resonance signals was observed using the 9 R 12 line of the CO2 laser. The vibrational transition involved is assigned to the QQs(8) transition of the v1-fundamental. ⊿J = 1, K = 5 rotational transitions were found for J = 5, 6, 7, and 8 in both vibrational states. A detailed description of the apparatus and methods is given.

Nuclear Quadrupole Hyperfine Structure in the Rotational Spectrum of 3-Chloropyridine. An Application of Microwave-Microwave Double Resonance Fourier Transform Spectroscopy

1988 ◽  
Vol 43 (7) ◽  
pp. 657-661 ◽  
Author(s):  
N. Heineking ◽  
H. Dreizler
Keyword(s):  
Fourier Transform ◽  
Hyperfine Structure ◽  
Double Resonance ◽  
Fourier Transform Spectroscopy ◽  
Coupling Constants ◽  
Rotational Spectrum ◽  
Rotational Constants ◽  
Modulation Technique ◽  
Quadrupole Coupling ◽  
Nuclear Quadrupole

AbstractWe redetermined the rotational and the chlorine-35 and nitrogen-14 nuclear quadrupole coupling constants of 3-chloropyridine. The values are A = 5839.5330(12) MHz, B = 1604.1875(6) MHz, and C = 1258.3121 (5) MHz for the rotational constants, and χaa(Cl) = - 72.255(19) MHz, χbb(Cl) = + 38.500(13) MHz, χcc(Cl) = + 33.755(23) MHz and χaa(N) = - 0.009(13) MHz, χbb(N) = - 3.473(10) MHz, χCC(N) = + 3.482(16) MHz for the chlorine-35 and nitrogen-14 nuclear quadrupole coupling constants, respectively.Application of double resonance modulation technique is shown to greatly simplify the assign­ment of hyperfine structure components even of weak rotational transitions.

Investigation of the Nitrogen Hyperfine Structure of Vinylisocyanide by Microwave Fourier Transform Spectroscopy in the X-and Ku-Band

1982 ◽  
Vol 37 (1) ◽  
pp. 58-63 ◽  
Author(s):  
G. Bestmann ◽  
H. Dreizler
Keyword(s):  
Fourier Transform ◽  
Hyperfine Structure ◽  
Fourier Transform Spectroscopy ◽  
Fourier Transform Spectrometer ◽  
Rotational Transitions ◽  
Ku Band

Abstract In memory of W. H. We discuss the features of a microwave Fourier transform spectrometer in the X-and Ku-band as applied to the investigation of the hyperfine structure of rotational transitions. The Nitrogen-hyperfine structure of vinylisocyanide was measured and analysed.

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