SYNCHRONIZED AUTODYNE DETECTOR AND ITS USE IN THE STABILIZATION OF MAGNETIC FIELDS WITH PROTON RESONANCE (in German)
For detection of nuclear magnetic resonance signals an autodyne detector with a single- coupled standard frequency was used. The methods of senchronized autodynes and modified Q meters, differentiated according to the standardization of the oscillators, have a good sensitivity and frequency stability which depends only on the synchronization frequency. Expressions on the character of nuclear resonance absorptlon were derived and discussed, on the basis of the van der Pol theory. These show the nonlinearity of the autodyne calculations which appear for the signal-to-noise ratio as proven and explicit in the formulas. Because of the simplicity and the possibility of modifying the frequency over wide range, the described method can be used for the stabilization of magnetic fields with proton resonance. The block wiring diagram of a stabilizer with a relative field stability of better than 10/sup -6/ was given. (tr-auth)
- Research Organization:
- Max-Planck-Institut fur Chemie, Mainz
- NSA Number:
- NSA-12-007931
- OSTI ID:
- 4334002
- Journal Information:
- Zeitschrift fuer Naturforschung (West Germany) Divided into Z. Nautrforsch., A, and Z. Naturforsch., B: Anorg. Chem., Org. Chem., Biochem., Biophys.,, Journal Name: Zeitschrift fuer Naturforschung (West Germany) Divided into Z. Nautrforsch., A, and Z. Naturforsch., B: Anorg. Chem., Org. Chem., Biochem., Biophys., Vol. Vol: 13a; ISSN ZNTFA
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
Similar Records
SYNCHRONIZED AUTODYNE DETECTOR IN STUDIES OF NUCLEAR MAGNETIC RESONANCE SPECTRA
Autodyne nmr sensor with phase automatic frequency control