Abstract
The technique of time-differential perturbed angular distributions (TDPAD) was used to investigate the structure of graphite samples intercalated by AsF5 vapor. Following population of the 198 keV state (τ=125 ns, Q=0.072b) of 19F by the 19F(p, p′γ) reaction, measurements of the γ-ray angular distribution were performed to give information on quadrupole interactions. Theoretical fits reveal the presence of two static electric field gradient (efg) interactions, the principal one corresponding to the formation of CF bonds, with quadrupole frequency νQ=57.4±0.8MH z. Although information on graphite intercalation chemistry was not forthcoming from the measurements, it is shown that the strong texture exhibited in the perturbation spectra can be explained in terms of the angular dependence of the efg, suggesting a novel method for the characterization of graphite intercalation compounds.
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