£ £ £ £ £ £ £ £ £ £ £ 

£ £ £ Liquid metal X-ray diffractometer consists of three parts: X-ray collection system¡¢vacuum and atmosphere protecting system¡¢specimen heating and moving system¡¢automation system. The X-ray diffraction was carried out adopting q-q type. Measurements were carried out in high purity helium atmosphere before the chamber was cleaned by vacuum equipment. Specimens were placed in an alumina crucible, and were heated by a pair of Ta sheets. Mo Ka radiation was reflected from the free surface of the liquid specimen, the X-ray then reached the detector through a graphite monochromator in the diffraction beam. During the measurements, the surface of the specimen was fixed to one horizontal position by means of a laser calibrator. The Diffraction X-ray scattering intensity measured in arbitrary units can be converted into the coherent scattering intensity per atom in an electron unit. Structure factors¡¢pair correlation functions¡¢coordination number¡¢nearest neighbor distance and so on, can be obtained by calculation and analysis of experimental datum.