Gordon D. Cates

High‐volume production of laser‐polarized 129Xe

A method is described for producing several liters of nuclear spin polarized 129Xe gas via spin exchange with an optically pumped Rb vapor. We use a 140 W AlGaAs laser diode array whose broad spectral output is efficiently absorbed by employing ∼10 atm of 4He to pressure broaden the Rb D1 absorption profile. 129Xe is polarized in a continuous gas flow and is then cryogenically accumulated and stored. Extensions of this technique should enable the production of tens of liters of 129Xe with a nuclear spin polarization of order 50%. Production of laser‐polarized 129Xe in liter quantities is important for the continued development of magnetic resonance imaging using spin‐polarized 129Xe.

Precision determination of the neutron spin structure function g1 n

We report on a precision measurement of the neutron spin structure function

Measurement of the Neutral Weak Form Factors of the Proton

g^n_1

Neutron polarization with a polarized 3He spin filter

using deep inelastic scattering of polarized electrons by polarized ^3He. For the kinematic range 0.014<x<0.7 and 1 (GeV/c)^2< Q^2< 17 (GeV/c)^2, we obtain

Spin transfer between laser-polarized 129Xe nuclei and surface protons

\int^{0.7}_{0.014} g^n_1(x)dx = -0.036 \pm 0.004 (stat) \pm 0.005 (syst)

Sol-gel coated glass cells for spin-exchange polarized 3He

at an average

New results from spin-exchange optical pumping

Q^2=5 (GeV/c)^2

The SLAC high-density gaseous polarized 3He target☆

. We find relatively large negative values for

Laser polarized muonic 3He and spin dependent μ− capture

g^n_1

A method for imaging and spectroscopy using γ-rays and magnetic resonance

at low