The neutron polarization of the NG-C beamline at NIST Center for Neutron Research was measured as part aCORN beta decay experiment. transmission through a polarized 3He spin filter cell recorded while adiabatic fast passage (AFP) nuclear magnetic resonance (NMR) reversed direction in an eight-step sequence to account drifts. dependence on used calculate polarization. time dependent fit model wh...

Nuclear spin-polarized (3)He gas at pressures on the order of 100 kPa (1 bar) are required for several applications, such as neutron spin filters and magnetic resonance imaging. The metastability-exchange optical pumping (MEOP) method for polarizing (3)He gas can rapidly produce highly polarized gas, but the best results are obtained at much lower pressure (~0.1 kPa). We describe a compact comp...

The field of medical imaging with polarized rare gases, just five years old, has brought optical scientists together with medical researchers to perfect techniques and pursue new opportunities for biomedical research. This review, written for the likely reader of these volumes, aims to present the field from several perspectives. The historical perspective shows how applications of nuclear pola...

The interplay of bulk and boundary scattering is explored in a regime where quantum size effects modify mesoscopic transport in a degenerate Fermi liquid film of 3He on a rough surface. We discuss mass transport and the momentum relaxation time of the film in a torsional oscillator geometry within the framework of a quasiclassical theory that includes the experimentally determined power spectru...

Charge flow in metals and mass flow in a neutral Fermi liquid show distinct profiles and are governed by different conservation properties. The connections between these two aspects of flow become apparent when we study the viscous flow of normal liquid 3He in the presence of aerogel. While the thermal flow is trivially affected, we predict that the resistance to mass flow shows a crossover fro...

We show that small amounts of 3He atoms, added to a 4He drop deposited on a flat cesium surface at zero temperature, populate bound states localized at the contact line. These edge states show up for drops large enough to develop well defined surface and bulk regions together with a contact line, and they are structurally different from the well-known Andreev states that appear at the free surf...