Publications [#315736] of Peng Zhang

Journal Articles

1. Tscherbul, TV; Zhang, P; Sadeghpour, HR; Dalgarno, A; Brahms, N; Au, YS; Doyle, JM, Collision-induced spin depolarization of alkali-metal atoms in cold He3 gas, Physical Review A Atomic Molecular and Optical Physics, vol. 78 no. 6 (December, 2008), American Physical Society (APS), ISSN 1050-2947 [doi]
   (last updated on 2026/01/18)

   Abstract:
   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.