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Martin, Richard M. Vincent, Jordan Eric 2015-09-25T20:02:59Z 2015-09-25T20:02:59Z 10000-01-01 2006 2006 A major part of this work involves quantifying the effect of core-valence correlation via the CPP. The CPP is found to be important for accurate calculations of the total energy, and for excitations of atoms and small molecules. However, there are only small changes in the lowest optical excitations of larger clusters, which can be understood in terms of the nature of the excitations, mainly the relative Ge s to p atomic orbital character of the excited state. Made available in DSpace on 2015-09-25T20:02:59Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3243017.pdf: 5447777 bytes, checksum: 3e37f38d43a6071cd41cba4091130002 (MD5) Previous issue date: 2006 Embargo set by: Seth Robbins for item 81823 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 239 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006. http://hdl.handle.net/2142/80541 (MiAaPQ)AAI3243017 eng Physics, Condensed Matter Quantum Monte Carlo Calculations of the Electronic Excitations of Germanium Atoms, Molecules and Nanoclusters Using Core-Polarization Potentials text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.