Cold collisions in Cr-Cr and Cr-Rb mixtures

POSTER

Abstract

We report calculations of the elastic and inelastic cross sections for collisions between two maximally spin-polarized chromium and rubidium atoms in the ultracold regime. Using available data on transition frequencies, discrete dipole matrix elements, and photoionization oscillator strengths in Cr and Rb, we obtain a value for the static polarizability of Cr-Rb and the dispersion coefficient $C_{6}$ for the van der Waals interaction. The effect of shape resonances on elastic and inelastic rate coefficients in collision of Cr-Rb mixtures is studied. We also calculate Cr-Cr differential cross sections in order to examine the anisotropic character of the magnetic dipolar interaction in the presence of a magnetic field.

Authors

  • Zoran Pavlovi\'c

  • Robin Cote

    • University of Connecticut, Storrs, CT 06269
    • Department of Physics, University of Connecticut, Storrs, CT 06269-3046
    • University of Connecticut, Physics Department, U-3046 Hillside Road, Storrs CT, 02269-3046
    • University of Connecticut
    • Dept. of Physics, UCONN, Storrs, CT
    • University of Connecticut, Department of Physics, Storrs, CT 06269.
    • University of Connecticut (Storrs, CT 06269)

  • H. R. Sadeghpour

    • ITAMP -Center for Astrophysics, Cambridge, MA 02138