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New developments in high-pressure X-ray diffraction beamline for diamond anvil cell at SPring-8 被引量:6
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作者 N.Hirao S.I.Kawaguchi +3 位作者 K.Hirose K.Shimizu e.ohtani Y.Ohishi 《Matter and Radiation at Extremes》 SCIE CAS 2020年第1期49-58,共10页
An overview of the recently renovated high-pressure X-ray diffraction(XRD)BL10XU beamline for the diamond anvil cell at SPring-8 is presented.The renovation includes the replacement of the X-ray source and monochromat... An overview of the recently renovated high-pressure X-ray diffraction(XRD)BL10XU beamline for the diamond anvil cell at SPring-8 is presented.The renovation includes the replacement of the X-ray source and monochromator,enhanced focusing systems for high-energy XRD,and recent progress in the sample environment control techniques that are available for high-pressure studies.Other simultaneous measurement techniques for combination with XRD,such as Raman scattering spectroscopy and Mossbauer spectroscopy,have been developed to obtain complementary information under extreme conditions.These advanced techniques are expected to make significant contributions to in-depth understanding of various and complicated high-pressure phenomena.The experience gained with the BL10XU beamline could help promote high-pressure research in future synchrotron radiation facilities. 展开更多
关键词 BEAM gained EXTREME
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水对圣卡洛斯橄榄石α-β相变动力学的影响
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作者 T.Kubo e.ohtani +3 位作者 T.Kato T.Shinmei K.Fujino 刘巍 《世界地震译丛》 2001年第4期83-86,共4页
在压力为13.5 GPa 和温度为1030℃的实验中,水的存在极大地提高了由橄榄石的相变形成的瓦兹利石的生长速率。有水时,瓦兹利石具有低位错密度和亚晶界。水促进了瓦兹利石的位错恢复,引起了与相变伴随的局部压力降的非弹性张弛,从而增加... 在压力为13.5 GPa 和温度为1030℃的实验中,水的存在极大地提高了由橄榄石的相变形成的瓦兹利石的生长速率。有水时,瓦兹利石具有低位错密度和亚晶界。水促进了瓦兹利石的位错恢复,引起了与相变伴随的局部压力降的非弹性张弛,从而增加了生长速率。这些结果说明,很少量的水(重量的0.05%)也能够弱化地幔中的瓦兹利石。 展开更多
关键词 橄榄石 α-β相变 动力学
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