Atomic distribution in liquid helium

Abstract

The angular distribution of intensity of X-radiation scattered by liquid helium has been investigated between 4$\cdot $20 and 1$\cdot $27 degrees K. Liquid-ring diffraction patterns are obtained at all temperatures, with the main maximum at an angle of about 28$\cdot $5 degrees. The intensity distribution appears almost the same for all temperatures below 3 degrees K; slight differences only are observable at 4$\cdot $20 degrees K. Detailed analyses have been made at 2$\cdot $06 and 4$\cdot $20 degrees K, and the structure factors and atomic distribution functions deduced for these two temperatures.