Accession Number : AD0722449

Title :   Temperature and Pressure Effects of Atomic Repulsion in Aerospace Electronic Materials.

Descriptive Note : Final scientific rept. 1 Jun 68-15 Dec 70,

Corporate Author : SOUTHERN ILLINOIS UNIV CARBONDALE SCHOOL OF TECHNOLOGY

Personal Author(s) : Amoros,J. L.

Report Date : 15 DEC 1970

Pagination or Media Count : 24

Abstract : The objective of the research was to ascertain the laws followed by the repulsive potential of the atoms in terms of temperature, pressure and crystal structure. The determination of whether or not this behavior is an atomic function, and the role of the electronic structure of the atom was sought. To avoid the effect produced by the creation of imperfections, x-ray thermal expansion and compressibility were determined as a function of crystal structure type and chemical composition. The variation of the electron cloud of the different elements was studied by the method of the Selected Electron Shell. (Author)

Descriptors :   (*FERROELECTRIC CRYSTALS, *CRYSTAL STRUCTURE), POTENTIAL ENERGY, TEMPERATURE, PRESSURE, MOLECULAR ORBITALS, SCATTERING, COMPRESSIVE PROPERTIES, ORGANIC COMPOUNDS, ELECTRON DENSITY

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE