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...

Hyperpolarized (HP) 3helium (3He) dynamic MRI was used to investigate airway response in rats following intravenous (i.v.) bolus administration of a contractile agent, methacholine (MCh). The method provides direct visualization of the ventilated regions within the lung. Heterogeneous bronchoconstriction following the i.v. MCh injection was evident using this technique. These 3He dynamic lung i...

The flow of superfluid 3He-B through a 65 3 65 array of nanometer-size apertures has been measured recently by Backhaus et al. They find in the current-phase relation a new branch, the so-called p state. We study two limiting cases which show that the p state arises from the coupling of the phase degree of freedom to the spin-orbit rotation. The p state exists in a single large aperture, but is...

The 3He(α,γ)7Be process is a key reaction in both Big-Bang nucleosynthesis and p-p chain of Hydrogen Burning in Stars. A new measurement of the 3He(α,γ)7Be cross section has been performed at the INFN Gran Sasso underground laboratory by both the activation and the prompt γ detection methods. The present work reports full details of the prompt γ detection experiment, focusing on the determiPrep...

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 electromagnetic inclusive responses of polarized 3He and 3H are thoroughly investigated at the quasielastic peak for squared momentum transfers up to 2 (GeV/c)2, within the plane wave impulse approximation. Great emphasys is put on the effects in the bound-state due to different twoand three-body nuclear forces, and to the Coulomb interaction as well. A careful analysis of the polarized res...

Spin-echo experiments are reported for 3He-4He solutions under extremely high B/T conditions, B=14.75 T and T>or=1.73 mK. The 3He concentration x(3) was adjusted close to the value x(c) approximately 3.8% at which the spin-rotation parameter muM0 vanishes. In this way the transverse and longitudinal spin-diffusion coefficients D( perpendicular ),D( parallel ) were measured while keeping |muM(0)...