NMR-EPR Communications Terminal Equipment.
Abstract
The objectives of the program were to investigate the application of spin resonance techniques for use in X-band receiver 'front-ends', and to examine the possibility of developing a highly stable tunable oscillator using optically pumped spin filter techniques. An experimental receiver has been assembled using a pair of spin filters, one as input filter, the second to control local oscillator frequency. The system has automatically tracked input signals over a wide band using circuits developed under this contract. Studies were performed pertinent to the use of various spin resonance materials, bandwidth control, magnetic environment of the filters, insertion loss, and structures for implementation of the filters with minimum loss and maximum off-resonance isolation. A detailed study of the theory of optically pumped spin oscillators was performed. The feasibility of an oscillator stable to 1 x 10 to the 10th power has been determined. This form of oscillator, unlike previously developed atomic oscillators, can be magnetically tuned over useful ranges with relatively small loss of stability. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1969
- Accession Number
- AD0853294
Entities
People
- Edward D. Ostroff
- Frederick F. Reed
- Marvin J. Weber
- Neil F. Lacey
- Sumner Riceman
Organizations
- RTX