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Relaxation des Natrium-Grundzustandes bei Stößen mit den stabilen Helium- und Wasserstoff-Isotopen

Relaxation of the sodium groundstate in collisions with stable helium and hydrogen isotopes

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Zeitschrift für Physik A Hadrons and nuclei

Abstract

The spin-polarization of the optically pumped Na-groundstate is investigated in presence of the stable He- and H2-isotopes. The following disorientation cross sections are derived from the pressure dependence of the relaxation rate:σ=(16.2±2.0) · 10−26 cm2 for He3 σ=(2.4±0.5) · 10−26 cm2 for He4 σ=(3.9±1.5) · 10−26 cm2 for H2 σ=(2.3±1.0) · 10−26 cm2 for D2.

These values can be compared with theoretical cross sections based on two relaxation models and indicate the existence of a relaxation mechanism involving the exchange of the electronic alkali-spin with the nuclear spin of the foreign gas.

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Authors and Affiliations

  1. I. Physikalisches Institut der Justus-Liebig-Universität Gießen, Bundesrepublik Deutschland

    H. Soboll

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  1. H. Soboll
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Ich danke Herrn Prof. Dr. Dr.-Ing. E. h. W. Hanle für sein förderndes Interesse sowie Herrn Prof. Dr. A. Scharmann für die freundliche Bereitstellung des Arbeitsplatzes.

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Soboll, H. Relaxation des Natrium-Grundzustandes bei Stößen mit den stabilen Helium- und Wasserstoff-Isotopen. Z. Physik 265, 487–501 (1973). https://doi.org/10.1007/BF01391804

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