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Mulders, N.

Publications and source records attributed to Mulders, N..

13 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS2000

High Resolution Thermometry for EXACT

High Resolution Thermometers (HRTs) based on SQUID detection of the magnetization of a paramagnetic salt or a metal alloy has been commonly used for sub-nano Kelvin temperature resolution in low temperature physics experiments. The main applications to date have been for temperature ranges near the lambda point of He-4 (2.177 K). These thermometers made use of materials such as Cu(NH4)2Br4 *2H2O, GdCl3, or PdFe. None of these materials are suitable for EXACT, which will explore the region of the He-3/He-4 tricritical point at 0.87 K. The experiment requirements and properties of several candidate paramagnetic materials will be presented, as well as preliminary test results.

Panek, J. S.↗
NASA NTRS1999

A High-Resolution Thermometer for the Range 0.75-1.0 K

We report on a new high-resolution thermometer (HRT) for use near the tricritical point in 3He-4He mixtures. It is based on an existing HRT design that uses a DC-SQUID to detect the magnetization of a paramagnetic sensing element.

thermometer 3He-4He Mixtures Tricritical Point Gad↗