Temperature and density dependence of129Xe chemical shift in rare gas mixtures

摘要

Pulsed Fourier transform NMR spectroscopy was used to obtain129Xe chemical shifts in gases with densities of xenon much lower than ever before observed. At densities of 3ndash;28 amagat, the contamination of the desired linear term in chemical shielding by contributions due to threehyphen;body or higher order interactions is completely eliminated. This allows the determination of very precise values of sgr;1(T) for129Xe in xenon, krypton, and argon gas.