2014 A complete quantum phase shift calculation of several transport coefficients in spin polarized quantum gases (3He, H~ and D~) has been carried out for temperatures ranging from 0.04 K to 10 K and nuclear polarizations M varying from 0 to 1. After a detailed analysis of the dynamical features of the collision, the various direct and exchange « cross sections » necessary to describe the coll...

The proposed design of a fuel pellet containing liquid 3He enclosed in a spherical Be shell of 300 μm thickness and overcoated with D2 solid appears to be adequate for fueling large size d/3He tokamaks. Smaller pellets of this design could be used for near-term experiments. The pellet fabrication should be simple and the components are non-radioactive.

In this review we first present an introduction to 3He and to the ROTA collaboration under which most of the knowledge on vortices in superfluid 3He has been obtained. In the physics part, we start from the exceptional properties of helium at millikelvin temperatures. The dilemma of rotating superfluids is presented. In 4He and in 3He-B the problem is solved by nucleating an array of singular v...

NMR images of laser polarized 3He gas were obtained at 21 G using a simple, homebuilt instrument. At such low fields magnetic resonance imaging (MRI) of thermally polarized samples (e.g., water) is not practical. Low-field noble gas MRI has novel scientific, engineering, and medical applications. Examples include portable systems for diagnosis of lung disease, as well as imaging of voids in por...

Based on measurements of the temperature dependence of 3He relaxation in a wide range of spin-exchange optical pumping cells, we report evidence for a previously unrecognized surface relaxation process. The relaxation rate was found to be linearly proportional to the alkali-metal density with a slope that exceeds the spin-exchange rate, which limits the polarization for current applications, in...

We propose to determine the proton electric form-factor G E at high Q2 by measuring the transverse asymmetry Ax in the 3 ~ He(~e, e′p)d reaction. We present a doublepolarization approach distinct both from a cross-section measurement and recoil polarimetry. As the key instrument we propose to use the two-body breakup of polarized 3He acting as an effective polarized proton target.

Calculations are presented on the precision achievable for the measurement of nucleon spin structure functions using a 50 GeV polarized electron beam scattering off polarized proton, deuterium, and 3He targets. The main advantage of such a program is the high statistical precision of the measurements. The implications for testing QCD sum rules and studying the Q2 evolution of the nucleon spin s...

This paper describes a technique in which noble gases such as 3He and 129Xe are polarized using optical pumping techniques, and used as a source of signal for magnetic resonance imaging. Techniques for polarizing the gas and a few representative examples of clinical applications are presented. Also emphasized is the connection between noble-gas imaging and the use of polarized gaseous targets i...

It has been shown that the Boltzmann equation for the viscosity of the A-phase of superfluid 3He at low temperatures has the same form as for a normal Ferrni liquid. The viscosity coefficients A, B, C, D and E are derived exactly. The h , parameter plays an important role in determining the temperature dependence of the viscosity coefficients

2014 Spin polarized gases such as H~ or 3He~ can propagate damped spin waves at low temperatures; their origin is the so-called « identical spin rotation effect » in collisions between identical particles. We report here the observation of such effects in 3He~ in the temperature range 2 T 6 K, and preliminary measurements of the coefficient 03BC which characterizes the quality factor of the spi...