Applications of perforated diamond anvils for very high-pressure research

摘要: To reduce the large absorption effect in diamond anvil pressure cells for soft x rays, perforated anvils employed as diamond-backing plates (DBPs) used conjunction with miniature (MAs) made of 1/100 carat diamonds were tested high-pressure efficacy. Static pressures beyond 100 GPa generated using a piston/cylinder cell having 0.2 mm culets. Tests carried out 0.1 cavities drilled Re gasket, Ar samples and ruby chips manometry. Except single failure 0.3 culet MA, no damage was detected DBPs truncated conical holes tapering from to 1, 1.5, 2 diameter. Another arrangement which one partially leaving 0.5 thick wall behind achieved GPa. Detailed discussions are given concerning benefits DBP/MA studies rays background reduction Raman, IR, UV, 57Fe Mossbauer spectroscopies.