Charlotte Froese Fischer family name Fischer
Charlotte Froese Fischer (born 1929) is a Canadian-American applied mathematician and computer scientist noted for the development and implementation of the Multi-Configurational Hartree–Fock (MCHF) approach to atomic-structure calculations and its application to the description of atomic structure and spectra.
The experimental discovery of the negative ion of calcium
 
was motivated by her theoretical prediction of its existence.
This was the first known anion of a Group 2 element. 
Its discovery was cited in Froese Fischer's election to Fellow of the American Physical Society.Contributions
Froese Fischer is the author of over 300 research articles on computational atomic theory, many of which have had far-reaching impact in the area of atomic-structure calculations. The early version of the MCHF program, published in the first volume of Computer Physics Communications received two Citation Classics Awards in 1987. She authored an influential monograph on Hartree-Fock approaches to the first-principles calculation of atomic structure, 
and coauthored a substantial successor work.    
One of her largest efforts in the field is the calculation of the complete lower spectra of the beryllium-like to argon-like isoelectronic sequences, amounting to the publication of data covering 400 journal pages and a total of over 150 ions.
 She also authored a scientific biography of her Ph.D. thesis advisor, Douglas Hartree.Froese Fischer is currently an emerita research professor of computer science at Vanderbilt University and a Guest Scientist in the Atomic Spectroscopy Group at NIST. She is the widow of Patrick C. Fischer, himself a noted computer scientist and former professor at Vanderbilt. An autobiographical account of her own life up to the year 2000 was published in Molecular Physics,
and a biographical review of her scientific work up to 2019 has been published in Atoms.References
External links
Personal web page, includes all her scientific work: results, publications, software, etc...
Reminiscences at the end of the century: Biography of herself and a short biography of Douglas Hartree
Page of Charlotte Froese Fischer on the NIST website
Charlotte Froese Fischer at the Mathematics Genealogy Project
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