Improved Calculations of X-Ray Coherent and Incoherent Scattering Cross-Sections.
Abstract
Progress is described in four areas of research. For large atoms a code has been developed to calculate profiles from numerical Hartree-Fock wave functions. Relativistic Compton profiles have been calculated for the first time. Non-relativistic and relativistic profile calculations for gadolinium are presented. 'Exact' hydrogenic K-shell and L-shell calculations were performed. Impulse incoherent scattering factors were shown to be greatly improved over conventional Waller-Hartree calculations for strong binding or the case of low momentum transfers. A direct variational principle to calculate coherent factors has been employed in the two-electron atom ground state isoelectronic sequence and very accurate results have been obtained using a simple trial wave function.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1972
- Accession Number
- AD0750768
Entities
People
- Lawrence B. Mendelsohn
Organizations
- New York University Tandon School of Engineering