Spin-orbit suppression of cold inelastic collisions of aluminum and helium.

Zeeman relaxation induced by spin-orbit coupling in cold antimony-helium collisions

relaxation induced by spin-orbit coupling in cold antimony-helium collisions. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We investigate Zeeman relaxation in c...

New Journal of Physics Cold TiO ( X 3 1 ) – He collisions

We use laser ablation and cryogenic helium buffer-gas cooling to produce large numbers of X 11 TiO molecules at a translational temperature of 5K. We investigate their cold collisions with helium and measure elastic and inelastic scattering cross-sections. As expected for 31 molecules, which have large spin–rotation couplings, TiO’s inelastic m-changing collision cross-section is large: on the ...

Spin-orbit interaction and large inelastic rates in bismuth-helium collisions

Cold collisions of O2 with helium

Collision cross sections between oxygen molecules and helium atoms are computed at translational energies between 0.1 K and 10.0 K, motivated by the recently demonstrated cooling of molecules by a helium buffer gas. Detailed calculations based on a rigid-rotor model demonstrate the differences among various isotopic combinations of oxygen atoms and also serve to illustrate resonant features uni...

Collisional properties of cold spin-polarized metastable neon atoms.

We measure the rates of elastic and inelastic two-body collisions of cold spin-polarized neon atoms in the metastable 3P2 state for 20Ne and 22Ne in a magnetic trap. From particle loss, we determine the loss parameter of inelastic collisions beta=6.5(18) x 10(-12) cm(3) s(-1) for 20Ne and beta=1.2(3) x 10(-11) cm(3) s(-1) for 22Ne. These losses are caused by ionizing (i.e., Penning) collisions ...