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A New Principle in Nuclear Resonance-Applications; UN NOUVEAU PRINCIPE EN RESONANCE NUCLEAIRE APPLICATIONS

Technical Report ·
OSTI ID:4259432
It has been shown theoretically by Gverhauser and experimentally by Slichter that the application of an intense r-f field at the Larmor frequency of the conduction electrons to a metallic sample would increase the nuclear polarization. This idea was developed both theoretically and experimentally. The application of the r-f field to solutions of paramagnetic substances causes an increase in the nuclcar polarization of the solvent of the same order of magnitude as for the metals but with an opposite sign. The saturation of one of the electron resonance spectral lines of peroxylamine sulfonate gives an increase of the proton signal of the onder of 40 in high fields of 3000 gauss. In intermediate fields of 100 gauss the proton signal is increased by an order of 80. An apparatus to measure the field of the earth within 10/sup -6/ gauss was constructed. In a silcon semiconductor the partial saturation of the spin resonance of conduction electrons has resulted in an increase of the polarization of Si/sup 29/ of the order of 1500. (J.S.R.)
Research Organization:
Commissariat a l'Energie Atomique, Paris
NSA Number:
NSA-13-006864
OSTI ID:
4259432
Report Number(s):
A/CONF.15/P/1139
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

AMINES-- EFFICIENCY-- ELECTRIC CONDUCTIVITY-- ELECTRIC FIELDS-- ELECTRONS-- FREQUENCY-- GYROMAGNETIC RATIO-- INSTRUMENTS-- LARMOR FREQUENCY-- MAGNETIC FIELDS-- MAGNETIC MATERIALS-- MAGNETIC RESONANCE-- MAGNETISM- - MEASURED VALUES-- METALS-- NUCLEI-- OXIDES-- PARAMAGNETISM-- PEROXIDES-- PLANNING-- POLARIZATION-- PRODUCTION-- PROTONS-- RADIO WAVES-- SIGNALS-- SOLUTIONS-- SOLVENTS-- SULFONIC ACIDS-- VARIATIONS
ELECTRIC CONDUCTIVITY-- ELECTRIC FIELDS-- ELECTRONS-- FREQUENCY-- GYROMAGNETIC RATIO-- LARMOR FREQUENCY-- MAGNETIC FIELDS-- MAGNETIC MATERIALS-- MAGNETIC RESONANCE-- MAGNETISM-- METALS-- NUCLEI-- PARAMAGNETISM-- POLARIZATION-- PRODUCTION
PHYSICS AND MATHEMATICS