Long-range dispersion C6 coefficient for SF6 dimer: Experimental and theoretical studyстатья
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Дата последнего поиска статьи во внешних источниках: 6 декабря 2018 г.
Аннотация:The long-range dispersion C6 coefficient for the SF6 dimer is experimentally measured using a technique
that uses the expansion of a supersonic pulse jet into a vacuum. A dynamic model of the
jet enables us to correlate the position of the maximal peak in the time-of-flight spectrum with the
initial conditions of the experiment and the parameters of the intermolecular interaction potential.
Due to the low temperature of the jet target, the C6 coefficient can be extracted directly from the
experimental results. Theoretical calculation of the C6 dispersion coefficient is also performed by
using linearly approximated explicitly correlated coupled-cluster singles and doubles (CCSD(F12))
method with the subsequent utilization of the Casimir-Polder formula. Good agreement of experimental
and theoretical results confirms the reliability of results.