%0 Journal Article %J Physical Review Letters %D 1991 %T Measurement of Xenon Distribution Statistics in Na-a Zeolite Cavities %A Chmelka, B. F. %A Raftery, D. %A Mccormick, A. V. %A Demenorval, L. C. %A Levine, R. D. %A Pines, A. %K fluids %X

Xe-129 NMR spectroscopy has been used to probe directly the distribution of xenon atoms confined in atomic-size Na-A zeolite cavities. For mean xenon occupancies less than about three Xe atoms per a-cage, the guest populations are well described by binomial statistics. At higher guest loadings the finite volumes of the xenon atoms become significant, as reflected by a fit of the experimental populations with a hypergeometric distribution, with a maximum of seven Xe atoms per cage. At the highest xenon loadings the experimental distribution is narrower than hypergeometric, as predicted by Monte Carlo simulations.

%B Physical Review Letters %V 66 %P 580-583 %8 Feb 4 %@ 0031-9007 %G English %U ://WOS:A1991EV89700016 %N 5 %M WOS:A1991EV89700016 %! Measurement of Xenon Distribution Statistics in Na-a Zeolite Cavities %R Doi 10.1103/Physrevlett.66.580