The technology of filling D-T gas in glass micro-spheres with large aspect radios

Step by step method of pressurizing D-h into glass microspheres with large aspect radios was applied. The whole metal system could bear high pressure and prevent erosion from hydrogen and its isotope. The leakage of this system was 3.7 x 10-4 Pa·L/s under 15 MPa. Combination of U and LaNi5 serve as a good gas-resource, which could apply different pressure at different temperature, satisfied the requirement of filling. The properties of glass microspheres with aspect radios were also studied. The micro-spheres could bear pressure of 1.0 MPa at 250 degree C as well as at the room temperature and the ratio of inside to outside pressure was about 0.51. The process of filling gas in glass micro-spheres was as follows: at 250 degree C, increased 0.1 MPa at 0.5 h interval, when the pressure add up to 1.0 MPa, retaining 4 h. The heating was ceased and the system was cooled down, then D2 was used to clean up. The microspheres were taken out for determination. The pressure of D-H in shells was 0.51-0.54 MPa which could satisfy the requirement of physical experiment