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Atomic and molecular physics using synchrotron radiation - the early years.

K Codling

    Journal of Synchrotron Radiation
    |May 16, 2006
    PubMed
    Summary

    Synchrotron radiation revolutionized atomic and molecular photoionization studies, revealing resonances in atoms and molecules. Early research focused on characterizing these resonances, paving the way for later investigations into electron correlation effects.

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    Area of Science:

    • Atomic and Molecular Physics
    • Quantum Chemistry
    • Synchrotron Radiation Science

    Background:

    • The study of photoionization has been significantly advanced by synchrotron radiation.
    • Early research in the 1960s utilized electron synchrotrons to observe resonances.

    Purpose of the Study:

    • To review the transformative impact of synchrotron radiation on atomic and molecular photoionization.
    • To focus on the discoveries and characterization of resonances during the early era of synchrotron use.

    Main Methods:

    • Utilized the 180 MeV electron synchrotron at the National Bureau of Standards.
    • Characterized photoionization resonances by determining energies and lifetimes of excited states.

    Main Results:

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    • Discovered numerous resonances in the photoionization continua of atoms and simple molecules.
    • Established methods for characterizing these resonances in terms of excited states.

    Conclusions:

    • Synchrotron radiation was pivotal in advancing the field of photoionization.
    • Early resonance discoveries laid the groundwork for subsequent studies on electron correlation.