Accession Number : AD0272637

Title :   NUCLEAR RESONANCE IN LIQUID AND SOLID HE3 AT LOW TEMPERATURES

Corporate Author : OXFORD UNIV (ENGLAND) CLARENDON LAB

Personal Author(s) : HATTON,J. ; BREWER,D.F.

Report Date : 31 OCT 1961

Pagination or Media Count : 1

Abstract : The cryogenic requirements for the preliminary investigation were comparatively simple and consisted of a chamber containing liquid He-4 which can be cooled to 1K and in which the He-3 cavity is situated. Pressures can be raised to over 150 atm by means of a thermal compression unit. Several different electronic systems were investigated for making nuclear resonance measurements. Measurements of the spin-lattice relaxation time gave values around 1 minute; the true relaxation is known to be closer to 5 min. The short times observed are probably due to impurity or wall relaxation.

Descriptors :   *HELIUM, *NUCLEAR MAGNETIC RESONANCE, CRYOGENICS, HIGH PRESSURE, ISOTOPES, LABORATORY EQUIPMENT, LIQUIDS, MAGNETIC PROPERTIES, MEASUREMENT, NUCLEAR SPINS, RADIOFREQUENCY, RELAXATION TIME, SOLIDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE