Long-range dispersion C6 coefficient for SF6 dimer: Experimental and theoretical study
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 25, 2018
- Source ID
- 10.1063/1.5049891
Entities
People
- Ajith Perera
- Alexander V. Lazarev
- Denis Bokhan
- Dmitrii N. Trubnikov
- Kira A. Tatarenko
Organizations
- Army Research Office
- Moscow State University
- Russian Center for Science Information
- University of Florida