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Ralph O. Simmons Shah, Raj Suresh 2015-09-25T20:03:32Z 2015-09-25T20:03:32Z 10000-01-01 1999 1999 Lattice parameter data obtained from experiments at the National Synchrotron Light Source at the Brookhaven National Laboratory are also presented here. The vacancy formation energy of fcc 4He at 10.4 cm3 /mol was obtained by two different methods. In addition, c/a ratios were determined to be ideal for hcp 4He and hcp 3He near 10 cm3/mol. Made available in DSpace on 2015-09-25T20:03:32Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9944995.pdf: 5048797 bytes, checksum: ce87163aa617da59c26fd9fcacb10c06 (MD5) Previous issue date: 1999 Embargo set by: Seth Robbins for item 81953 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 111 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1999. http://hdl.handle.net/2142/80671 (MiAaPQ)AAI9944995 eng Physics, Condensed Matter X -Ray and Pressure Measurements on Helium Solids text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.