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    ANALYSIS OF ALKALI METAL ATOMIC POLARIZABILITIES AND DEVELOPING ATOM INTERFEROMETRY WITH METASTABLE HELIUM

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    Author
    BROOKS, NATHAN JI-MING
    Issue Date
    2016
    Advisor
    Cronin, Alexander
    
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    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Atom interferometry is a powerful method for precision measurements of atomic properties such as polarizability, which quantifies the energy shift of an atom due to an applied electric field. In this work, we interpret recent Cs, Rb, K, and Na atomic polarizability measurements in terms of transition matrix elements, excited state lifetimes, and atomic oscillator strengths. We also use these measurements to improve calculations of van der Waals atom-atom interaction potentials. We then combine measurements of polarizability and van der Waals potentials in order to empirically quantify the e↵ect of atomic core (inner-shell) electrons on these properties. This novel method expands the utility of atom interferometry as a test for modern atomic structure calculations. In addition, we explore the possibility of extending our polarizability measurements to metastable helium atoms, for the purpose of reducing systematic errors in our existing measurements, and to strontium atoms, of interest in the construction of next-generation atomic clocks.
    Type
    text
    Electronic Thesis
    Degree Name
    B.S.
    Degree Level
    Bachelors
    Degree Program
    Honors College
    Physics
    Degree Grantor
    University of Arizona
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    Honors Theses
    Honors Theses

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