For more than a half century, my colleagues and I in the Stony Brook High Pressure Laboratory have profited from collaborations with French scientists in their laboratories in Orsay, Paris, Toulouse, Lille, Lyon, Stra...For more than a half century, my colleagues and I in the Stony Brook High Pressure Laboratory have profited from collaborations with French scientists in their laboratories in Orsay, Paris, Toulouse, Lille, Lyon, Strasbourg and </span><span style="font-family:Verdana;">Rennes. These interactions have included postdoctoral appointments of French colleagues in our laboratory as well as two année sabbatique by me;in 1983-84</span><span style="font-family:Verdana;">, in the Laboratoire de Géophysique et Géodynamique Interne at the Université Paris XI in Orsay and in 2020-2003 in the Laboratoire des Méchanismes et Transfert en Géologie at the Université Paul Sabatier in Toulouse. The objective of this report is to relate this history and to illustrate the scientific advances which </span></span><span style="font-family:Verdana;">resulted</span><span style="font-family:Verdana;"> from these collaborations.展开更多
For the past half-century, I have been fortunate in maintaining collaborations with Czech scientists in the Czech Republic [formerly Czechoslovakia] from the Geofyzikální ústav-GFU [Institute of Geophys...For the past half-century, I have been fortunate in maintaining collaborations with Czech scientists in the Czech Republic [formerly Czechoslovakia] from the Geofyzikální ústav-GFU [Institute of Geophysics] of the <span style="font-family:Verdana;">?</span><span style="font-family:Verdana;">eskoslovenská Akademie Věd-</span><span style="font-family:Verdana;">?</span><span style="font-family:Verdana;">SAV [Czechoslovak Academy of Sciences]. These collaborations have included exchange visits by me to Prague [Praha] and convening international workshops in 1976, 1986 and 1996 in castles used by the </span><span style="font-family:Verdana;">?</span><span style="font-family:Verdana;">SAV as well as visits by Czech colleagues to Stony Brook University. The objective of this report is to relate this history. This paper is dedicated to the memory of Vladislav Babu</span><span style="font-family:Verdana;">?</span><span style="font-family:Verdana;">ka.</span>展开更多
For more than three decades, I have been fortunate in working with Chinese graduate students and postdoctoral research scientists in our High-Pressure Laboratory at Stony Brook University. These colleagues have conduc...For more than three decades, I have been fortunate in working with Chinese graduate students and postdoctoral research scientists in our High-Pressure Laboratory at Stony Brook University. These colleagues have conducted a wide variety of experiments at high pressures and temperatures in collaboration with our other students and researchers. These studies utilized transmission electron microscopy, ultrasonic interferometry, X-ray powder diffraction and synchrotron X-radiation to investigate phase transitions, thermal equations of state, sound velocities, atomic diffusion, dislocation dissociation and deviatoric stress in high-pressure apparatus. During this period, I have also visited high-pressure laboratories in </span><span style="font-family:Verdana;">the mainland of China</span><span style="font-family:Verdana;"> and Taiwan on several occasions. The objective of this paper is to relate this history.展开更多
Over the past half century, I have maintained research connections with Russian scientists during investigations in seismology and mineral physics. These studies have focused on detection and discrimination of undergr...Over the past half century, I have maintained research connections with Russian scientists during investigations in seismology and mineral physics. These studies have focused on detection and discrimination of underground nuclear explosions and measurements of the physical properties of minerals at high pressures and temperatures. During this period, I have also visited many research laboratories in Russia, including Moscow, Chernogolovka, Novosibirsk and St. Petersburg. The objective of this paper is to relate this history.展开更多
Over the past six decades, I have maintained research connections with English scientists while pursuing an academic career focusing on scientific discoveries of the physical properties of minerals at high pressures a...Over the past six decades, I have maintained research connections with English scientists while pursuing an academic career focusing on scientific discoveries of the physical properties of minerals at high pressures and temperatures. During this period, I have also visited many research laboratories in England, including University of Cambridge, University College London, University of Oxford and the Atomic Weapons Research Establishment [AWRE] in Aldermaston, England. The objective of this paper is to relate this history.展开更多
Ultrasonic interferometry was utilized in conjunction with synchrotron-based X-ray diffraction and X-radiographic imaging to determine the compressional and shear wave velocities and unlt-cdl volumes of pyrite (FeS2...Ultrasonic interferometry was utilized in conjunction with synchrotron-based X-ray diffraction and X-radiographic imaging to determine the compressional and shear wave velocities and unlt-cdl volumes of pyrite (FeS2) at room temperature and pressures up to 9.6 GPa. Fitting all of the experimental volume and velocity data to third-order finite-strain equations yielded the adiabatic zero-pressure bulk and shear moduli and their first pressure derivatives: Ks0=138.9(7) GPa, Go=U2.3(3) GPa, (δKS0/δP)T=KS0'=6.0(1), (δG0/δP)T=G0'=3.0(〈1), where the numbers in parentheses represent the 1δ uncertainty in the last significant digit. These results are in good agreement with several previous static compression studies on this material but differ quite strongly from the results obtained via first principles calculations. This study presents the first direct measurement of the bulk shear properties of this material.展开更多
文摘For more than a half century, my colleagues and I in the Stony Brook High Pressure Laboratory have profited from collaborations with French scientists in their laboratories in Orsay, Paris, Toulouse, Lille, Lyon, Strasbourg and </span><span style="font-family:Verdana;">Rennes. These interactions have included postdoctoral appointments of French colleagues in our laboratory as well as two année sabbatique by me;in 1983-84</span><span style="font-family:Verdana;">, in the Laboratoire de Géophysique et Géodynamique Interne at the Université Paris XI in Orsay and in 2020-2003 in the Laboratoire des Méchanismes et Transfert en Géologie at the Université Paul Sabatier in Toulouse. The objective of this report is to relate this history and to illustrate the scientific advances which </span></span><span style="font-family:Verdana;">resulted</span><span style="font-family:Verdana;"> from these collaborations.
文摘For the past half-century, I have been fortunate in maintaining collaborations with Czech scientists in the Czech Republic [formerly Czechoslovakia] from the Geofyzikální ústav-GFU [Institute of Geophysics] of the <span style="font-family:Verdana;">?</span><span style="font-family:Verdana;">eskoslovenská Akademie Věd-</span><span style="font-family:Verdana;">?</span><span style="font-family:Verdana;">SAV [Czechoslovak Academy of Sciences]. These collaborations have included exchange visits by me to Prague [Praha] and convening international workshops in 1976, 1986 and 1996 in castles used by the </span><span style="font-family:Verdana;">?</span><span style="font-family:Verdana;">SAV as well as visits by Czech colleagues to Stony Brook University. The objective of this report is to relate this history. This paper is dedicated to the memory of Vladislav Babu</span><span style="font-family:Verdana;">?</span><span style="font-family:Verdana;">ka.</span>
文摘For more than three decades, I have been fortunate in working with Chinese graduate students and postdoctoral research scientists in our High-Pressure Laboratory at Stony Brook University. These colleagues have conducted a wide variety of experiments at high pressures and temperatures in collaboration with our other students and researchers. These studies utilized transmission electron microscopy, ultrasonic interferometry, X-ray powder diffraction and synchrotron X-radiation to investigate phase transitions, thermal equations of state, sound velocities, atomic diffusion, dislocation dissociation and deviatoric stress in high-pressure apparatus. During this period, I have also visited high-pressure laboratories in </span><span style="font-family:Verdana;">the mainland of China</span><span style="font-family:Verdana;"> and Taiwan on several occasions. The objective of this paper is to relate this history.
文摘Over the past half century, I have maintained research connections with Russian scientists during investigations in seismology and mineral physics. These studies have focused on detection and discrimination of underground nuclear explosions and measurements of the physical properties of minerals at high pressures and temperatures. During this period, I have also visited many research laboratories in Russia, including Moscow, Chernogolovka, Novosibirsk and St. Petersburg. The objective of this paper is to relate this history.
文摘Over the past six decades, I have maintained research connections with English scientists while pursuing an academic career focusing on scientific discoveries of the physical properties of minerals at high pressures and temperatures. During this period, I have also visited many research laboratories in England, including University of Cambridge, University College London, University of Oxford and the Atomic Weapons Research Establishment [AWRE] in Aldermaston, England. The objective of this paper is to relate this history.
基金supported by the USA National Science Foundation (Nos. EAR00135550, EAR0635860) to Baosheng Li,the USA Department of Energy, Office of Science, Office of Basic Energy Sciences (No. DE-AC02-98CH10886)the Consortium for Materials Properties Research in Earth Sciences under NSF Cooperative Agreement (No. EAR01-35554)the Mineral Physics Institute, Stony Brook University (MPI Publication No. 480)
文摘Ultrasonic interferometry was utilized in conjunction with synchrotron-based X-ray diffraction and X-radiographic imaging to determine the compressional and shear wave velocities and unlt-cdl volumes of pyrite (FeS2) at room temperature and pressures up to 9.6 GPa. Fitting all of the experimental volume and velocity data to third-order finite-strain equations yielded the adiabatic zero-pressure bulk and shear moduli and their first pressure derivatives: Ks0=138.9(7) GPa, Go=U2.3(3) GPa, (δKS0/δP)T=KS0'=6.0(1), (δG0/δP)T=G0'=3.0(〈1), where the numbers in parentheses represent the 1δ uncertainty in the last significant digit. These results are in good agreement with several previous static compression studies on this material but differ quite strongly from the results obtained via first principles calculations. This study presents the first direct measurement of the bulk shear properties of this material.