Related papers: Electric-field-controlled cold dipolar collisions between trapped CH$

Electric-field-controlled cold dipolar collisions between trapped CH$_3$F molecules

URL: http://arxiv.org/abs/2204.12339v1
Date: Tue, 26 Apr 2022 14:29:34 GMT
Title: Electric-field-controlled cold dipolar collisions between trapped CH$_3$F molecules
Authors: M. Koller, F. Jung, J. Phrompao, M. Zeppenfeld, I.M. Rabey and G. Rempe
Abstract summary: We use a cryofuge to load up to 2$times107$ CH$_3$F molecules into a box-like electric trap, achieving densities up to 10$7$/cm$3$ at temperatures around 350 mK. We measure inelastic rate constants below 4$times$10$-8$cm$3$/s and control these by tuning a homogeneous electric field. Our techniques and findings are generic and immediately relevant for other cold-molecule collision experiments.
Score: 0.0
License: http://creativecommons.org/licenses/by-sa/4.0/
Abstract: Reaching high densities is a key step towards cold-collision experiments with polyatomic molecules. We use a cryofuge to load up to 2$\times10^7$ CH$_3$F molecules into a box-like electric trap, achieving densities up to 10$^7$/cm$^3$ at temperatures around 350 mK where the elastic dipolar cross-section exceeds 7$\times$10$^{-12}$cm$^2$. We measure inelastic rate constants below 4$\times$10$^{-8}$cm$^3$/s and control these by tuning a homogeneous electric field that covers a large fraction of the trap volume. Comparison to ab-initio calculations gives excellent agreement with dipolar relaxation. Our techniques and findings are generic and immediately relevant for other cold-molecule collision experiments.

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