Abstract
Direct simulation Monte Carlo was used to investigate the interaction between molecular nitrogen, argon, and methane, initially at 300 K and 0.8 atm, and frequency-chirped, pulsed optical lattices. The simulated optical lattice parameters are consistent with published optical lattice-based experiments to ensure that pulse energies and durations do not exceed optical breakdown (ionization) thresholds. In an effort to maximize optical lattice gas heating, laser pulses were chirped to produce lattice velocities which more effectively facilitate energy deposition throughout the pulse duration. The maximum end pulse translational temperature obtained in nitrogen, argon, and methane was 763, 715, and 1018 K, respectively.
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Acknowledgments
This work used, in part, the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number OCI-1053575. This work was also supported, in part, by a grant of computer time from the DoD HPC Modernization Program (HPCMP) at the ERDC DoD Supercomputing Resource Center (DSRC).
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Graul, J.S., Gimelshein, S.F. & Lilly, T.C. Optical lattice gas heating simulation under application of intrapulse frequency chirping. Appl. Phys. B 120, 573–579 (2015). https://doi.org/10.1007/s00340-015-6168-z
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DOI: https://doi.org/10.1007/s00340-015-6168-z