<?xml version="1.0" encoding="UTF-8"?><item href="/people/sandra-quintanilla-phd.html" dsn="people"><first_name>Sandra</first_name><last_name>Quintanilla</last_name><prefixes/><pronouns/><post_nominals>Ph.D</post_nominals><title-1>Professor</title-1><title-2/><title-3/><title-4/><department/><type>Faculty</type><email>squintanilla@unt.edu</email><phone>(940) 565-4739</phone><image><img src="/images/people_photos/quintanilla_res96.jpg" alt="Sandra Quintanilla, Ph.D"/></image><office>PHYS 309</office><address/><office-hours/><types><type>Faculty</type></types><departments/><main-content>
Ph.D (Royal Holloway and Bedford New College, University of London (United Kingdom), 1986)
Atomic, Molecular, &amp; Optical Physics. Theoretical atomic physics, in particular three-body (Coulomb) problems; low- and high-energy positron collisions; electron collisions; photodetachment of negative ions; variational principles; modified effective range theories; formulation of atomic theory.

Dr. Sandra Quintanilla is an atomic theorist who studies various aspects of the three body Coulomb problem. In particular she studies positron collision, (E-2e) collisions, and Photon interactions. Positron collisions have important applications in many areas of physics such as solid state and astrophysics.
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