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Reactive scattering 87Rb + 87RbHe→Rb2(3∑+u , v) + Heat ultra-low energies

Pablo Villarreal, Rocío Rodríguez‐Cantano, Tomás González‐Lezana, Rita Prosmiti, Gerardo Delgado Barrio, Julius Jellinek

Published Aug 27, 2015• 0 citations
Publisher

Abstract

Conferencia invitada; Cost Action - MOLIM Molecules in Motions CM 1405, Université Paris Est - Marne la Vallée, August 27 - 29, 2015; http://cost-molim.eu
DOI
10.13039/501100000921

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We investigate atom-diatom reactive collisions, as a preliminary step,in order to assess the possibility of forming Rb(2) molecules in their lowest triplet electronic state by cold collisions of rubidium atoms on the surface of helium nanodroplets [corrected]. A simple model related to the well-known Rosen treatment of linear triatomic molecules [N. Rosen, J. Chem. Phys. 1, 319 (1933)] in relative coordinates is used, allowing to estimate reactive probabilities for different values of the total angular momentum. The best available full dimensional potential energy surface [Guillon et al., J. Chem. Phys. 136, 174307 (2012)] is employed through the calculations. Noticeable values of the probabilities in the ultracold regime, which numerically fulfill the Wigner threshold law, support the feasibility of the process. The rubidium dimer is mainly produced at high vibrational states, and the reactivity is more efficient for a bosonic helium partner than when the fermion species is considered.

The Journal of Chemical Physics•Apr 24, 2015•9 citations

Collisions of ultracold $^{\mathrm{23}}$Na$^{\mathrm{87}}$Rb molecules with controlled chemical reactivity

Xin Ye, Mingyang Guo, J. He +4 more

Bulletin of the American Physical Society•Jun 6, 2017•0 citations
Dipolar collisions of ultracold 23^{\mathrm{23}}23Na87^{\mathrm{87}}87Rb molecules.
We investigate atom-diatom reactive collisions, as a preliminary step,in order to assess the possibility of forming Rb(2) molecules in their lowest triplet electronic state by cold collisions of rubidium atoms on the surface of helium nanodroplets [corrected]. A simple model related to the well-known Rosen treatment of linear triatomic molecules [N. Rosen, J. Chem. Phys. 1, 319 (1933)] in relative coordinates is used, allowing to estimate reactive probabilities for different values of the total angular momentum. The best available full dimensional potential energy surface [Guillon et al., J. Chem. Phys. 136, 174307 (2012)] is employed through the calculations. Noticeable values of the probabilities in the ultracold regime, which numerically fulfill the Wigner threshold law, support the feasibility of the process. The rubidium dimer is mainly produced at high vibrational states, and the reactivity is more efficient for a bosonic helium partner than when the fermion species is considered.
Collisions of ultracold 23^{\mathrm{23}}23Na87^{\mathrm{87}}87Rb molecules with controlled chemical reactivity