Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Ultracold Collisions of Metastable Helium Atoms



P J. Leo, V Venturi, I B. Whittingham, J F. Babb


We report scattering lengths for the 1ς+g, 3ς+u, 5ς+g adiabatic molecular potentials relevant to collisions of two metastable 2 3S helium atoms as a function of the uncertainty in these potentials. These scattering lengths are used to calculate experimentally observable scattering lengths, elastic cross sections, and inelastic rates for any combination of states of the colliding atoms, at temperatures where the Wigner threshold approximation is valid.
Physical Review A (Atomic, Molecular and Optical Physics)
No. 4


metastable helium atoms, ultracold collisions


Leo, P. , Venturi, V. , Whittingham, I. and Babb, J. (2001), Ultracold Collisions of Metastable Helium Atoms, Physical Review A (Atomic, Molecular and Optical Physics) (Accessed April 20, 2024)
Created October 1, 2001, Updated February 17, 2017