SharePLATINUM NMR THERMOMETRY IN HIGH MAGNETIC FIELDS.
Author(s) : CANDELA D., MCALLASTER D. R.
Type of article: Article
Summary
A PLATINUM NUCLEAR MAGNETIC RESONANCE (NMR) THERMOMETER HAS BEEN DEVELOPED FOR USE IN HIGH MAGNETIC FIELDS (10 T) AT LOW DILUTION REFRIGERATOR TEMPERATURES (10 MILLIK). THE DESIGN CONSISTS OF FINE PLATINUM WIRES COOLED BY A HEAT EXCHANGER OF PRESSED SILVER POWDER. NUCLEAR MAGNETIC HEAT CAPACITY, THERMAL AND MAGNETIC RELAXATION TIMES AND INHOMOGENEOUS LINE BROADENING ARE QUANTITATIVELY ADDRESSED. A VERSION OF THE THERMOMETER THAT FITS WITHIN A 1 MM DIAMETER TUBE HAS BEEN USED TO MEASURE TEMPERATURES DOWN TO 7.9 MILLIK IN A DILUTE HELIUM 3-HELIUM 4 SOLUTION IN AN 8 T FIELD.
Details
- Original title: PLATINUM NMR THERMOMETRY IN HIGH MAGNETIC FIELDS.
- Record ID : 1992-0132
- Languages: English
- Source: Cryogenics - vol. 31 - n. 2
- Publication date: 1991/02
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Indexing
- Themes: Thermodynamic measurements
- Keywords: Cryotemperature; Measurement; Thermometry; NMR; Platinum; Cryocooler; Magnetic field
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