Manifestation of spin-orbit interactions in photoemission from free atoms

    Authors

    C. D. Caldwell; S. B. Whitfield;M. O. Krause

    Comments

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    Abbreviated Journal Title

    Mol. Phys.

    Keywords

    PARTIAL CROSS-SECTIONS; BRANCHING RATIOS; AUTOIONIZING RESONANCES; ANGULAR-DISTRIBUTION; AUGER ELECTRONS; PHOTOIONIZATION; REGION; CHLORINE; XENON; AR; Physics, Atomic, Molecular & Chemical

    Abstract

    Fine-structure resolved electron spectrometry in conjunction with highly resolved synchrotron radiation have been used to observe in detail some of the consequences of the spin-orbit interaction on the decay of the Ar 3s -- > np autoionizing resonances. The findings include (a) a 20% enhancement in the ratio of the partial cross-sections for the isolated 6p single-electron excitation, (b) the presence of a previously unidentified two-electron excitation in the vicinity of the 8p resonance, and (c) different resonance widths in sigma(tot), sigma(3/2), and sigma(1/2) for the 10p excitation, namely, 1.64 meV, 1.9 meV, and 1.0 meV, respectively. These data, and the experimental capabilities they reflect, highlight the importance of the spin-orbit interaction in determining the dynamics of photoemission from free atoms.

    Journal Title

    Molecular Physics

    Volume

    98

    Issue/Number

    16

    Publication Date

    1-1-2000

    Document Type

    Article

    Language

    English

    First Page

    1075

    Last Page

    1082

    WOS Identifier

    WOS:000088580900006

    ISSN

    0026-8976

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