X-Ray Determination of the Static Structure Factor of Liquid Na and K
Abstract
Highly accurate x-ray diffraction measurements are presented for the static structure factor a(q) for liquid Na (at 100 and 200 °C) and liquid K (at 65 and 135 °C). A detailed error analysis is presented showing that the over-all root-mean-square error in a(q) never exceeds 2.5% for any value of the momentum transfer q and the relative root-mean-square error in a(q) between different temperatures is always less than 1.5%. We discuss and demonstrate the reliability of the tabulated values for the atomic form factor and the Compton-scattering correction. A brief discussion is included of the relative merits of x-ray vs neutron diffraction for obtaining the static structure factor.
- Publication:
-
Physical Review A
- Pub Date:
- October 1971
- DOI:
- 10.1103/PhysRevA.4.1607
- Bibcode:
- 1971PhRvA...4.1607G