Collision-induced spin depolarization of alkali-metal atoms in cold He3 gas

Journal Article (Journal Article)

We present a joint experimental and theoretical study of spin depolarization in collisions of alkali-metal atoms with He3 in a magnetic field. A rigorous quantum theory for spin-changing transitions is developed and applied to calculate the spin exchange and spin relaxation rates of Li and K atoms in cryogenic He3 gas. Magnetic trapping experiments provide upper bounds to the spin exchange rates for Li- He3 and K- He3, which are in agreement with the present theory. Our calculations demonstrate that the alkali-metal atoms have extremely slow spin depolarization rates, suggesting a number of potential applications in precision spectroscopy and quantum optics. © 2008 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Tscherbul, TV; Zhang, P; Sadeghpour, HR; Dalgarno, A; Brahms, N; Au, YS; Doyle, JM

Published Date

  • December 31, 2008

Published In

Volume / Issue

  • 78 / 6

Electronic International Standard Serial Number (EISSN)

  • 1094-1622

International Standard Serial Number (ISSN)

  • 1050-2947

Digital Object Identifier (DOI)

  • 10.1103/PhysRevA.78.060703

Citation Source

  • Scopus