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Published October 19, 1984 | public
Journal Article

Phase- and energy-changing collisions in iodine gas: Studies by optical multiple-pulse spectroscopy


Using phase-coherent optical multiple-pulse spectroscopy, we report the measurement of phase- and energy-changing collisional cross sections in I_2 gas. We obtained the following cross sections: σ = 590 ± 110 Å^2 and σ_(energy) = 227 ± 12 Å 2. At 30 m Torr. 40% of the homogeneous is due to phase-changing collisions, and the total linewidth therefore does not give the lifetime directly.

Additional Information

© 1984 Elsevier Science Publishers B.V. Received 21 June 1984. This work is supported by a grant from the National Science Foundation (Grant # DMR 8105034).

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August 19, 2023
October 20, 2023