4 citations · 13 across the 9 of their papers we have counts for
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Temperature Increase of Highly-Polarized Fermi Liquids in Spin-Echo Experiments
R. Ragan, K. Grunwald, C. Glenz
We show that there are restrictions on the maximum tipping angle that can be used without significantly raising the temperature of the He-3 distribution in high B/T spin-echo exper…
Spin-Current Relaxation Time in Spin-Polarized Heisenberg Paramagnets
R. Ragan, K. Grunwald, B. Batell
We study the spatial Fourier transform of the spin correlation function G_q(t) in paramagnetic quantum crystals by direct simulation of a 1d lattice of atoms interacting via a near…
Monte Carlo Simulations of Spin-Diffusion in a 2-D Heisenberg Paramagnet
R. Ragan, K. Grunwald, C. Glenz
We study spin diffusion and spin waves in paramagnetic quantum crystals (solid He-3, for example) by direct simulation of a square lattice of atoms interacting via a nearest-neighb…
Leggett-Rice Systems in Harmonic Traps
R. Ragan, J. Baggett
We present two results concerning the spin (or pseudo spin) dynamics of trapped quantum gases in the hydrodynamic regime described by the Leggett equations. First, we apply perturb…
Landau Damping of Spin Waves in Trapped Boltzmann Gases
R. J. Ragan, W. J. Mullin, E. B. Wiita
A semiclassical method is used to study Landau damping of transverse pseudo-spin waves in harmonically trapped ultracold gases in the collisionless Boltzmann limit. In this approac…
Anisotropic Spin Diffusion in Trapped Boltzmann Gases
W. J. Mullin, R. J. Ragan
Recent experiments in a mixture of two hyperfine states of trapped Bose gases show behavior analogous to a spin-1/2 system, including transverse spin waves and other familiar Legge…