Pulsed Nuclear Magnetic Resonance ofNe21in Solid and Liquid Neon

Abstract

Pulsed nuclear-magnetic-resonance (NMR) measurements have been performed on isotopically enriched ${\mathrm{Ne}}^{21}$ in solid and liquid neon. Data presented include spin-spin relaxation times (${T}_{2}$) in solid neon and spin-lattice relaxation times (${T}_{1}$) in the solid and liquid. It is concluded that quadrupolar processes dominate the ${\mathrm{Ne}}^{21}$ nuclear spin-lattice relaxation in both the solid and the liquid. Coefficients of atomic self-diffusion are determined, with the results (solid) $D=({0.12}_{\ensuremath{-}0.05}^{+0.15}){e}^{\ensuremath{-}\frac{(947\ifmmode\pm\else\textpm\fi{}38)}{\mathrm{RT}}}$ ${\mathrm{cm}}^{2}$/sec and (liquid) $D=({6.6}_{\ensuremath{-}1.6}^{+2.1})\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}{e}^{\ensuremath{-}\frac{(211\ifmmode\pm\else\textpm\fi{}15)}{\mathrm{RT}}}$ ${\mathrm{cm}}^{2}$/sec.