Laser-Induced Ionizing Collisions of Ultracold Krypton Gas in the 1s5 Metastable State

Phys. Rev. Lett. 73, 2555 – Published 7 November 1994
Hidetoshi Katori and Fujio Shimizu

Abstract

The line shape of laser-induced ionizing collisions of ultracold Kr gas is investigated near the 1s5[4p5s5:P23] and 2p9[4p5p5:D33] transition. The rate increases several times when the laser is red tuned by a few times of the natural width, while it sharply decreases for a slight blue detuning. This frequency dependence of the collision rate is due to the collision dynamics characteristic of ultracold atoms in a near-resonant light. Our experimental results on metastable Kr atoms show a good qualitative agreement with semiclassical Monte Carlo simulation of the cold collision dynamics.

DOI: http://dx.doi.org/10.1103/PhysRevLett.73.2555

  • Received 8 April 1994
  • Published in the issue dated 7 November 1994

© 1994 The American Physical Society

Authors & Affiliations

Hidetoshi Katori and Fujio Shimizu

  • Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan

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