Rigid-Tail Helium Cryostat for X Ray Diffraction Studies of Crystallized Gases

Abstract
A rigid‐tail cryostat suitable for x ray back‐reflection diffraction studies requiring temperature control within a few hundredths of a degree for extended time intervals in the range above 2.3°K is described. The specimen chamber permits the growth, visual study, thermal etching, and annealing of crystallized gases. It may also be pressurized to 20 atm for x ray studies of compressibility.