Millimeter Wave Spectrum of Formaldehyde
- 1 August 1963
- journal article
- research article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 18 (8), 1174-1180
- https://doi.org/10.1143/jpsj.18.1174
Abstract
A Stark modulation-type spectrograph has been constructed. Millimeter wave klystrons are used as the power source. The sensitivity of the spectrograph is about 2×10 -7 cm -1 at 70 Gc, when the spectral lines are displayed on a cathode-ray oscilloscope with a sweep rate of 1 cps. R -branch transitions 1 01 ←0 00 of the formaldehyde isotopic species H 2 C 13 O, H 2 CO 18 , HDCO, D 2 CO, D 2 C 13 O and D 2 CO 18 have been measured and their rotational constants have been determined. The observed inertia defects of D 2 CO, H 2 C 13 O and H 2 CO 18 are shown to be in good agreement with the predicted theoretical values. From the observed rotational constants the r z -structures of formaldehyde are determined to beKeywords
This publication has 9 references indexed in Scilit:
- Analysis of the microwave spectrum of hydrogen selenideJournal of Molecular Spectroscopy, 1962
- Anharmonic Potential Constants and Their Dependence upon Bond LengthThe Journal of Chemical Physics, 1961
- Microwave Spectrum of Formaldehyde III. Vibration-Rotation InteractionJournal of the Physics Society Japan, 1961
- Microwave Spectrum of Formaldehyde II. Molecular Structure in the Ground StateJournal of the Physics Society Japan, 1960
- Microwave Spectrum of Formaldehyde I. K-type Doubling SpectraJournal of the Physics Society Japan, 1960
- Microwave Zeeman Effect of FormaldehydeJournal of the Physics Society Japan, 1960
- Further Extension of Microwave Spectroscopy in the Submillimeter Wave RegionPhysical Review B, 1956
- MICROWAVE SPECTROSCOPY ABOVE 60 KMc.*Annals of the New York Academy of Sciences, 1952
- Microwave Spectroscopy in the Region from Two to Three MillimetersPhysical Review B, 1950