In axially symmetric atomic-particle traps, the angular momentum of the particles about the symmetry axis is conserved in the absence of external torques. Changes in this angular momentum owing to laser scattering are discussed.
© 1985 Optical Society of America
D. J. Wineland, J. J. Bollinger, Wayne M. Itano, and J. D. Prestage, "Angular momentum of trapped atomic particles," J. Opt. Soc. Am. B 2, 1721-1730 (1985)