J. Phys. IV France 03 (1993) C4-185-C4-191
o-Ps annihilation parameters in Pt, 5% Pt-on-charcoal, Pd and 5% Pd-on-charcoal powdersJ.L. CIOTTONE, F. LANDER and D. LECLAIR
Chemistry Dept., Fitchburg State College, Fitchburg MA 01420, U.S.A.
o-Ps intensities and lifetimes show very good correlation to surface area and cavity size, respectively, of surface-active materials. τ3 and I3 values for Pt, 5% Pt-on-charcoal, Pd and 5% Pd-on-charcoal powders are presented. Surface area and cavity size are discussed and interpreted in terms of previously determined o-Ps lifetimes and intensities in abs. EtOH/pentene isomer/Pt or Pd mixtures.
© EDP Sciences 1993