Title :
Frequency measurement of pure rotational transitions of H/sub 2/O from 0.5 to 5 THz
Author :
Matsushima, F. ; Odashima, H. ; Iwasaki, T. ; Tsunekawa, S. ; Takagi, K.
Author_Institution :
Dept. of Phys., Toyama Univ., Japan
fDate :
June 27 1994-July 1 1994
Abstract :
Frequencies of H/sub 2/O pure rotational transitions from 0.5 to 5 THz have been measured with an accuracy of one part in 10/sup 9/ using a tunable far-infrared spectrometer. Measured frequencies of more than a hundred spectral lines provide an excellent wavelength and frequency calibration standard for the far infrared.<>
Keywords :
calibration; frequency measurement; infrared spectra of polyatomic inorganic molecules; infrared spectroscopy; measurement standards; molecular rotation; water; 0.5 to 5 THz; H/sub 2/O; frequency calibration standard; frequency measurement; pure rotational transitions; spectral lines; tunable far-infrared spectrometer; wavelength calibration standard; Calibration; Diodes; Finite impulse response filter; Frequency measurement; Laser transitions; Masers; Rotation measurement; Spectroscopy; Tunable circuits and devices; Wavelength measurement;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333306
