Microwave coupler for EPR cavities at 1.3 K
- 1 August 1976
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 47 (8) , 973-974
- https://doi.org/10.1063/1.1134786
Abstract
This note describes improvements in the commonly used Gordon coupler used in reflection‐type EPR spectrometers. The improvements permit stable, low noise operation in liquid helium at very low modulation frequencies. At microwave powers as high as 10−2 W, the superheterodyne spectrometer noise at 2 Hz is only 2 or 3 times worse than at 100 kHz.Keywords
This publication has 3 references indexed in Scilit:
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- Variable Coupling Reflection Cavity for Microwave SpectroscopyReview of Scientific Instruments, 1961