Nuclear Magnetic Resonance ofXe129in Solid and Liquid Xenon

Abstract

Self-diffusion coefficients, resonance shifts, and nuclear spin-spin relaxation times are reported for ${\mathrm{Xe}}^{129}$ in solid and liquid xenon. In the solid, the $T_2$ data indicate $D=\left({{7.3}_{-0.2\mathrm{}}}^{+0.4\mathrm{}}\right)\exp [-\frac{(7400\mathrm{}\pm 50}{\mathrm{RT}}]$ ${\mathrm{cm}}^2$/sec. In the liquid, direct external gradient-diffusion measurements yield $D=\left({{2.3}_{-0.7\mathrm{}}}^{+0.8\mathrm{}}\right)\times {10}^{-3\mathrm{}} \exp \times [-\frac{(1400\mathrm{}\pm 150)}{\mathrm{RT}}]$ ${\mathrm{cm}}^2$/sec. Density-dependent resonance shifts are found to occur in both the liquid and the solid.