We have developed a 920-MHz NMR system and performed the proton NMR measurement of H(2)O and ethylbenzene using the superconducting magnet operating at 21.6 T (920 MHz for proton), which is the highest field produced by a superconducting NMR magnet in the persistent mode. From the NMR measurements,
A high-resolution 2800 MHz multi-element interferometer
โ Scribed by A. E. Covington; T. H. Legg; M. B. Bell
- Publisher
- Springer
- Year
- 1967
- Tongue
- English
- Weight
- 613 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0038-0938
No coin nor oath required. For personal study only.
โฆ Synopsis
The design of the East West arm of a multi-element interferometer for solar noise observations in the band 2650-2950 mhz at the Algonquin Radio Observatory, Lake Traverse, Ont., Canada, is outlined. The completed first stage consists of an array of thirty-two 3-meter reflectors extending over 212 meters. In the second stage, four reflectors will be arranged symmetrically about the array for polarization studies, while in the third stage four additional reflectors will be placed to the East to form a compound interferometer. These configurations provide single lobed fan beams with half power widths of 1.5, 0.5 and 0.25 "of arc respectively. Scans of the sun taken on April 26th, 1966 with the 32-element array located two widely separated enhancements of radio emission, which produced a small gradual rise and fall burst on the solar patrol record.
๐ SIMILAR VOLUMES
High-resolution observations of solar radio bursts made simultaneously with multi-element compound interferometers at 3.75 and 9.4 GHz are presented. Preliminary results are: (l) The burst of December 16, 1967 showed a change in polarization distribution in the radio source, which suggests a magnet
Metrological feasibilities of a high-resolution grating interferometer (GI) based on a transverse Zeeman laser are investigated. When the grating pitch equals 20 mm, a resolution of 0.7 nm is obtained by means of a heterodyne signal processing method. The comparison of two approaches for determining