Note on the structure of liquid helium II

1947 ◽  
Vol 43 (2) ◽  
pp. 262-266 ◽  
Author(s):  
J. Reekie

A more detailed analysis has been carried out of earlier results obtained in the scattering of X-radiation by liquid He II. When certain necessary corrections have been applied to these results and a comparison made with theoretical intensity distribution functions to be expected for certain ordered arrangements of atoms in a liquid, it is found that the arrangement of atoms in liquid He II most probably follows either a diamond or a simple cubic configuration. Considerations of energy and atomic volume render the former the more likely arrangement.

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


1950 ◽  
Vol 5 (6) ◽  
pp. 1010-1013 ◽  
Author(s):  
S. Nakajima ◽  
M. Shimizu

1948 ◽  
Vol 74 (9) ◽  
pp. 1148-1156 ◽  
Author(s):  
F. London ◽  
P. R. Zilsel

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