Broadband and low insertion loss Stark cell for microwave spectroscopy
- 1 December 1978
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 49 (12) , 1712-1715
- https://doi.org/10.1063/1.1135354
Abstract
A groove guide cell for Stark modulation spectroscopy has been constructed and tested. This structure with quasi-unique mode propagation between two isolated plates is well adapted to application of a modulation voltage. The insertion losses are low (0.6 dB for a 3-m-long cell, and R band) and the cell is free of internal reflection. A metallic casing enclosing the plates acts as a shield against electrical interference, prevents low-voltage breakdown, and reduces wall adsorption of the gas. The performance of the cell is not affected by temperature variation (-80 degrees to 25 degrees C). A high sensitivity has been obtained by converting the cell into a 3-m-long, high-Q cavity. This type of cell appears to particularly recommend itself for use in intensity measurements, broadband spectroscopy, analytical studies, and high frequency range work.Keywords
This publication has 6 references indexed in Scilit:
- Sensitivity of Radio Frequency Measurements in the Presence of Oscillator NoiseReview of Scientific Instruments, 1972
- Experimental Results in Groove Guide (Correspondence)IEEE Transactions on Microwave Theory and Techniques, 1965
- The Groove Guide, a Low-Loss Waveguide for Millimeter WavesIEEE Transactions on Microwave Theory and Techniques, 1963
- High-Q Stark Cavity Absorption Cell for Microwave SpectrometersReview of Scientific Instruments, 1959
- Theory of the Cavity Microwave Spectrometer and Molecular Frequency StandardReview of Scientific Instruments, 1959
- Sensitivity Considerations in Microwave Paramagnetic Resonance Absorption TechniquesBell System Technical Journal, 1957