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RESEARCH PRODUCT
Polarimetry on dense samples of spin-polarized 3He by magnetostatic detection
Michael EbertE. WilmsWerner HeilReinhard Surkausubject
PhysicsNuclear and High Energy PhysicsMagnetometerbusiness.industryPolarimetryPolarization (waves)MagnetostaticsMolecular physicsFluxgate compasslaw.inventionOpticslawAdiabatic processbusinessInstrumentationdescription
Abstract A very sensitive low-field fluxgate magnetometer is used to detect the static magnetic field produced by dense samples of spin-polarized 3He gas contained in spherical glass cells at pressures around several bars. The 3He nuclear polarization can be extracted with high precision ΔP P by utilizing magnetostatic detection in combination with adiabatic fast-passage spin reversal. The polarization losses can be kept well below 0.1% thus making this type of polarimetry almost non-destructive. More simply even, P can be measured with reduced accuracy by the change of field when the cell is removed from the fluxgate. In this case the accuracy is limited to about 10% due to the uncertainties about the susceptibilities of the cell walls.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-12-01 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |