MR imaging with polarized noble gases has shown promise in both, biomedical and material’s imaging applications. Its advantage over the conventional proton MRI lies in its ability to produce high signal-to-noise ratio (SNR), high-resolution images at low magnetic field strengths. In this work: 1. We implemented and studied in detail two methods for detecting hyperpolarization levels of 129Xe an...

A study of semi-inclusive deep inelastic scattering off transversely polarized 3He is presented. The formal expressions of the Collins and Sivers contributions to the azimuthal single spin asymmetry for the production of leading pions are derived, in impulse approximation, and estimated in the kinematics of forth-coming experiments at JLab. The AV18 interaction has been used for a realistic des...

The low-temperature magnetic susceptibility of normal and superfluid 3He confined between mylar foils spaced 40 p apart shows a large and field-dependent enhancement over the bulk Fermi liquid magnitude. The excess susceptibility disappears when the liquid is doped with 0.5 7; 4He. The reason for the excess is unknown. We also studied the proton resonance of the mylar substrate and obtained spi...

We have developed a high-purity sol-gel coating for the interior surface of glass cells used for polarizing He by spin-exchange optical pumping. The coating is designed to minimize spin relaxation due to wall collisions. A longitudinal spin-relaxation time T1 in a sol-gel coated Pyrex cell of 34468 h was achieved, the longest T1 we have ever recorded for a gaseous sample. Repeated trials indica...

Polarized (3)He spin filters are needed for a variety of experiments with slow neutrons. Their demonstrated utility for highly accurate determination of neutron polarization are critical to the next generation of betadecay correlation coefficient measurements. In addition, they are broadband devices that can polarize large area and high divergence neutron beams with little gamma-ray background,...