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Collisional depolarization of excited114Cd 5s5p 3 P 1 atoms by collisions with molecular gases

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Zeitschrift für Physik D Atoms, Molecules and Clusters

Abstract

Depolarization of excited114Cd 5s5p 3 P 1 atoms induced by collisions with various molecular gases (N2, H2, D2, CO, CO2, CH4, C2H6, C2H4) has been investigated using polarized fluorescence spectroscopy. After pulsed optical excitation of the Cd 53 P 1 level with appropriately polarized light the temporal behaviour of Zeeman quantum beats has been observed showing the influence of collisional destruction of orientation and alignment. By analyzing the signal curves at different molecular gas pressures the corresponding depolarization cross sections for114Cd atoms in the 53 P 1 state have been obtained. With regard to a test of a nuclear spin decoupling model for the collisions the cross sections were compared with previously measured hyperfine structure transfer cross sections of113Cd 5s5p 3 P 1 atoms.

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Authors and Affiliations

  1. Physikalisches Institut, Universität Tübingen, Auf der Morgenstelle 14, D-72076, Tübingen, Germany

    H. Kaupp, H. -P. Didra, C. Kramer & M. Baumann

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  1. H. Kaupp
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  2. H. -P. Didra
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  3. C. Kramer
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  4. M. Baumann
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Kaupp, H., Didra, H.P., Kramer, C. et al. Collisional depolarization of excited114Cd 5s5p 3 P 1 atoms by collisions with molecular gases. Z Phys D - Atoms, Molecules and Clusters 27, 307–312 (1993). https://doi.org/10.1007/BF01437461

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  • DOI: https://doi.org/10.1007/BF01437461

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