Pub Date : 2023-01-02DOI: 10.1080/08957959.2023.2182209
R. Hrubiak, B. Sturtevant
ABSTRACT Sound speed and elastic constants measurements in solids and liquids are commonly performed using the ultrasound pulse-echo technique. Recent advances have expanded the use of this technique at numerous high pressure synchrotron beamlines and offline laboratories. However, the increased experimental throughput has revealed many limitations in existing software for handling the rapid measurement and the subsequent data-reduction. We report the development of a collection of computer programs for sound speed measurements using the ultrasound pulse-echo technique, compatible with stepped multi-frequency, as well as broadband-pulse, couplant-corrected methods. The programs provide a highly interactive graphical interface, enable efficient measurement, exploration and near real-time analysis of the ultrasound data, and contain features useful for working with samples under high pressure and/or high temperature. The included analysis programs can alleviate the time required for data reduction from hours to less than a minute, allowing users to make timely and informed decisions regarding the appropriate experimental parameters.
{"title":"SonicPy: a suite of programs for ultrasound pulse-echo data acquisition and analysis","authors":"R. Hrubiak, B. Sturtevant","doi":"10.1080/08957959.2023.2182209","DOIUrl":"https://doi.org/10.1080/08957959.2023.2182209","url":null,"abstract":"ABSTRACT Sound speed and elastic constants measurements in solids and liquids are commonly performed using the ultrasound pulse-echo technique. Recent advances have expanded the use of this technique at numerous high pressure synchrotron beamlines and offline laboratories. However, the increased experimental throughput has revealed many limitations in existing software for handling the rapid measurement and the subsequent data-reduction. We report the development of a collection of computer programs for sound speed measurements using the ultrasound pulse-echo technique, compatible with stepped multi-frequency, as well as broadband-pulse, couplant-corrected methods. The programs provide a highly interactive graphical interface, enable efficient measurement, exploration and near real-time analysis of the ultrasound data, and contain features useful for working with samples under high pressure and/or high temperature. The included analysis programs can alleviate the time required for data reduction from hours to less than a minute, allowing users to make timely and informed decisions regarding the appropriate experimental parameters.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"43 1","pages":"23 - 39"},"PeriodicalIF":2.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47138281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-27DOI: 10.1080/08957959.2022.2160246
L. Yang, A. Karandikar, T. Shiell, B. A. Cook, S. Wong, M. Field, J. Bradby, B. Haberl, D. G. McCulloch, R. Boehler
ABSTRACT The phase behavior of carbon at high pressure and the search for carbon structures denser than diamond has been explored for decades showing large discrepancies, with many fundamental questions remaining unresolved. Here we show evidence of melting above the graphite-diamond-liquid (GDL) triple point (∼13 GPa, 4000 K) up to 50 GPa on samples recovered from single flash-heating events using spectroscopic and electron microscopic methods. The results show that for all pressures, diamond melts below the triple point temperature contradicting previous studies, most of which predict a positive slope of the melting curve.
{"title":"Melting diamond in the diamond cell by laser-flash heating","authors":"L. Yang, A. Karandikar, T. Shiell, B. A. Cook, S. Wong, M. Field, J. Bradby, B. Haberl, D. G. McCulloch, R. Boehler","doi":"10.1080/08957959.2022.2160246","DOIUrl":"https://doi.org/10.1080/08957959.2022.2160246","url":null,"abstract":"ABSTRACT The phase behavior of carbon at high pressure and the search for carbon structures denser than diamond has been explored for decades showing large discrepancies, with many fundamental questions remaining unresolved. Here we show evidence of melting above the graphite-diamond-liquid (GDL) triple point (∼13 GPa, 4000 K) up to 50 GPa on samples recovered from single flash-heating events using spectroscopic and electron microscopic methods. The results show that for all pressures, diamond melts below the triple point temperature contradicting previous studies, most of which predict a positive slope of the melting curve.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"43 1","pages":"1 - 14"},"PeriodicalIF":2.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44782869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-27DOI: 10.1080/08957959.2022.2160247
G. Luzi, Benedict Prah, S. Loekman, B. Gatternig, Antonio Delgado
ABSTRACT Methane gas is a fossil clean fuel since the products of the combustion are only carbon hydrate and water. Methane hydrate is a potential source of methane gas. This ice-like methane source can be found in deep seafloors and permafrost regions, characterized by high pressure and low-temperature conditions. In this work, we simulate the process of methane hydrate dissociation by depressurization in a cylindrical sandstone core by means of a two-dimensional axis-symmetric model, focusing on the transport phenomena involved in the process. Our simulations indicate a first rapid dissociation phase due to depressurization itself, and a longer subsequent one due to the thermal exchange with the external environment. Our numerical results match well with experimental data found in the literature, without showing any significant pressure or temperature delay among different sections compared to other numerical studies.
{"title":"Development of an explicit pressure explicit saturation (EPES) method for modelling dissociation processes of methane hydrate","authors":"G. Luzi, Benedict Prah, S. Loekman, B. Gatternig, Antonio Delgado","doi":"10.1080/08957959.2022.2160247","DOIUrl":"https://doi.org/10.1080/08957959.2022.2160247","url":null,"abstract":"ABSTRACT Methane gas is a fossil clean fuel since the products of the combustion are only carbon hydrate and water. Methane hydrate is a potential source of methane gas. This ice-like methane source can be found in deep seafloors and permafrost regions, characterized by high pressure and low-temperature conditions. In this work, we simulate the process of methane hydrate dissociation by depressurization in a cylindrical sandstone core by means of a two-dimensional axis-symmetric model, focusing on the transport phenomena involved in the process. Our simulations indicate a first rapid dissociation phase due to depressurization itself, and a longer subsequent one due to the thermal exchange with the external environment. Our numerical results match well with experimental data found in the literature, without showing any significant pressure or temperature delay among different sections compared to other numerical studies.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"43 1","pages":"156 - 174"},"PeriodicalIF":2.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44223154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-02DOI: 10.1080/08957959.2022.2144290
Qi Chen, C. Sanloup, H. Bureau, Igor Rzeplinski, K. Glazyrin, R. Farla
ABSTRACT Understanding crystal/melt xenon (Xe) partitioning at depth is key to properly trace planetary processes using Xe isotopes. Partition coefficients measured on experimental samples recovered at room pressure (P) and temperature (T) span 6 orders of magnitude, potentially due to Xe exsolution from crystals upon quenching. We chose two in situ synchrotron X-ray methods to investigate Xe crystal/melt partitioning under high P and T up to 3 GPa and 1050°C using (1) resistive-heated diamond anvil cell with angle-dispersive diffraction and X-ray fluorescence, and (2) a new protocol using large volume press with energy-dispersive diffraction set-up. Results from both methods are consistent, and Xe is found to be compatible at depth, suggesting the continental crust could be a Xe-rich reservoir. This new protocol advances research to probe geological systems at the higher P–T conditions accessible with large volume press while maintaining homogeneous T throughout the sample.
{"title":"Probing the partitioning behaviour of Xe using in situ X-ray synchrotron techniques at high P–T conditions","authors":"Qi Chen, C. Sanloup, H. Bureau, Igor Rzeplinski, K. Glazyrin, R. Farla","doi":"10.1080/08957959.2022.2144290","DOIUrl":"https://doi.org/10.1080/08957959.2022.2144290","url":null,"abstract":"ABSTRACT Understanding crystal/melt xenon (Xe) partitioning at depth is key to properly trace planetary processes using Xe isotopes. Partition coefficients measured on experimental samples recovered at room pressure (P) and temperature (T) span 6 orders of magnitude, potentially due to Xe exsolution from crystals upon quenching. We chose two in situ synchrotron X-ray methods to investigate Xe crystal/melt partitioning under high P and T up to 3 GPa and 1050°C using (1) resistive-heated diamond anvil cell with angle-dispersive diffraction and X-ray fluorescence, and (2) a new protocol using large volume press with energy-dispersive diffraction set-up. Results from both methods are consistent, and Xe is found to be compatible at depth, suggesting the continental crust could be a Xe-rich reservoir. This new protocol advances research to probe geological systems at the higher P–T conditions accessible with large volume press while maintaining homogeneous T throughout the sample.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"42 1","pages":"318 - 335"},"PeriodicalIF":2.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47266386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-02DOI: 10.1080/08957959.2022.2144289
S. Machida, S. Nakano
ABSTRACT To investigate a gasket of null-matrix alloys suitable for high pressure neutron diffraction measurements using diamond-anvil-cells (DACs), high pressure experiments were conducted with TiZr and Mn-Cu-Ni-Fe (M2052) alloys as gaskets. The M2052 gasket was retained at least up to 20 and 43 GPa using the flat surface anvils of 1.5 and 1.0 mm culet sizes, respectively, whereas the TiZr gasket was broken at a range of 15–20 GPa with a 1.5 mm culet size. Furthermore, the M2052 gasket behaved as a null-matrix alloy in high pressure neutron diffraction measurements, and we obtained a satisfactory diffraction profile with no diffraction peaks from the gasket. This finding of the M2052 gasket will lead to a more accurate structural analysis in neutron experiments using the DAC.
{"title":"Investigation of null-matrix alloy gaskets for a diamond-anvil-cell on high pressure neutron diffraction experiments","authors":"S. Machida, S. Nakano","doi":"10.1080/08957959.2022.2144289","DOIUrl":"https://doi.org/10.1080/08957959.2022.2144289","url":null,"abstract":"ABSTRACT To investigate a gasket of null-matrix alloys suitable for high pressure neutron diffraction measurements using diamond-anvil-cells (DACs), high pressure experiments were conducted with TiZr and Mn-Cu-Ni-Fe (M2052) alloys as gaskets. The M2052 gasket was retained at least up to 20 and 43 GPa using the flat surface anvils of 1.5 and 1.0 mm culet sizes, respectively, whereas the TiZr gasket was broken at a range of 15–20 GPa with a 1.5 mm culet size. Furthermore, the M2052 gasket behaved as a null-matrix alloy in high pressure neutron diffraction measurements, and we obtained a satisfactory diffraction profile with no diffraction peaks from the gasket. This finding of the M2052 gasket will lead to a more accurate structural analysis in neutron experiments using the DAC.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"42 1","pages":"303 - 317"},"PeriodicalIF":2.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48012290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-02DOI: 10.1080/08957959.2022.2148207
Riko Iizuka-Oku, H. Gotou, A. Suzuki, H. Kagi
ABSTRACT The Earth’s iron-rich core contains light elements. Studying the interaction of multiple light elements with iron and silicates during core–mantle segregation process in early Earth evolution has become important. In-situ X-ray diffraction and imaging observations of the iron–silicate–water–sulfur system at 5–10 GPa, up to approximately 1900°C, were used to elucidate sequential reactions: phase transformation and hydrogenation of iron, and formation of iron sulfide and silicates. The newly constructed X-ray imaging system achieved spatial resolution of approx. 10 μm for this study to show iron blob formation and motion. Sulfur distorted the iron blob shape and affected blob growth during heating by reducing the interfacial energy between molten iron and silicates. Light elements in the molten iron and the remaining silicate grains affected core–mantle segregation in the primitive Earth as temperatures increased. Carbon and silicon were incorporated into liquid Fe during later processes at higher temperatures.
{"title":"In-situ X-ray diffraction and radiography of iron–silicate–water–sulfur system simulating behaviors of light elements during early Earth’s core–mantle segregation","authors":"Riko Iizuka-Oku, H. Gotou, A. Suzuki, H. Kagi","doi":"10.1080/08957959.2022.2148207","DOIUrl":"https://doi.org/10.1080/08957959.2022.2148207","url":null,"abstract":"ABSTRACT The Earth’s iron-rich core contains light elements. Studying the interaction of multiple light elements with iron and silicates during core–mantle segregation process in early Earth evolution has become important. In-situ X-ray diffraction and imaging observations of the iron–silicate–water–sulfur system at 5–10 GPa, up to approximately 1900°C, were used to elucidate sequential reactions: phase transformation and hydrogenation of iron, and formation of iron sulfide and silicates. The newly constructed X-ray imaging system achieved spatial resolution of approx. 10 μm for this study to show iron blob formation and motion. Sulfur distorted the iron blob shape and affected blob growth during heating by reducing the interfacial energy between molten iron and silicates. Light elements in the molten iron and the remaining silicate grains affected core–mantle segregation in the primitive Earth as temperatures increased. Carbon and silicon were incorporated into liquid Fe during later processes at higher temperatures.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"42 1","pages":"349 - 363"},"PeriodicalIF":2.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48470003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-02DOI: 10.1080/08957959.2022.2145562
F. Sun, Ying Li, Qiang He, Lei Liu, Zhigang Wang, Chaowen Xu, Yueju Cui, Yi Zhang, Q. Gong, J. Du
ABSTRACT Limestone mainly consisting of CaCO3 is one of the most abundant carbonates on Earth's surface. The sound velocities of limestone at high pressure were determined at room temperature using ultrasonic interferometry in a multi-anvil apparatus. Softening and discontinuities in compressional (P) and shear (S) wave velocities have been observed at around 1.45 GPa due to the phase transition of CaCO3-I to CaCO3-II, and the coexistence of CaCO3-IIIb and CaCO3-III stay up to ∼5 GPa. Limestone under CaCO3-I and CaCO3-III phase has much lower velocities and higher V P/V S ratio than most crustal and mantle minerals and the PREM model. Phase transitions from CaCO3-I to CaCO3-II cause the abrupt reduction of V P, V S, and V P/V S. The low velocities and high/low V P/V S ratio are well consistent with the seismology observed in the mantle wedge. The result suggests that the subduction of limestone into Earth's interior would cause low-velocity anomalies in mantle wedges.
{"title":"Sound velocity anomalies of limestone at high pressure and implications for the mantle wedge","authors":"F. Sun, Ying Li, Qiang He, Lei Liu, Zhigang Wang, Chaowen Xu, Yueju Cui, Yi Zhang, Q. Gong, J. Du","doi":"10.1080/08957959.2022.2145562","DOIUrl":"https://doi.org/10.1080/08957959.2022.2145562","url":null,"abstract":"ABSTRACT Limestone mainly consisting of CaCO3 is one of the most abundant carbonates on Earth's surface. The sound velocities of limestone at high pressure were determined at room temperature using ultrasonic interferometry in a multi-anvil apparatus. Softening and discontinuities in compressional (P) and shear (S) wave velocities have been observed at around 1.45 GPa due to the phase transition of CaCO3-I to CaCO3-II, and the coexistence of CaCO3-IIIb and CaCO3-III stay up to ∼5 GPa. Limestone under CaCO3-I and CaCO3-III phase has much lower velocities and higher V P/V S ratio than most crustal and mantle minerals and the PREM model. Phase transitions from CaCO3-I to CaCO3-II cause the abrupt reduction of V P, V S, and V P/V S. The low velocities and high/low V P/V S ratio are well consistent with the seismology observed in the mantle wedge. The result suggests that the subduction of limestone into Earth's interior would cause low-velocity anomalies in mantle wedges.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"42 1","pages":"336 - 348"},"PeriodicalIF":2.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47411495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-03DOI: 10.1080/08957959.2022.2113874
B. Lavina, E. Zanardi, A. Mujica, H. Cynn, Y. Meng, J.S. Smith, M. Kong, Y. Lee
ABSTRACT Using a laser-heated diamond anvil cell, a powdered sample of gallium phosphide was compressed to 17.5 GPa and heated up to 1400 K. The material obtained was characterized at room temperature using synchrotron x-ray diffraction. Experimental results were compared with first-principles calculations. The polymorph observed assumes the simple cubic structure (sc16) initially reported for GaAs at high pressures. Microdiffraction mapping showed variable grain sizes of the synthesized phase, with the largest grains located in the middle of the heated spot. Structural refinements were performed on selected grains. The structure predicted based on first-principles calculations is in close agreement with the experiments. The two Ga–P bonds show similar lengths in sc16-GaP; however, the bond angles differ, resulting in a distorted tetrahedral coordination geometry.
{"title":"The structure of sc16 GaP obtained at 17.5 GPa and 1400 K","authors":"B. Lavina, E. Zanardi, A. Mujica, H. Cynn, Y. Meng, J.S. Smith, M. Kong, Y. Lee","doi":"10.1080/08957959.2022.2113874","DOIUrl":"https://doi.org/10.1080/08957959.2022.2113874","url":null,"abstract":"ABSTRACT Using a laser-heated diamond anvil cell, a powdered sample of gallium phosphide was compressed to 17.5 GPa and heated up to 1400 K. The material obtained was characterized at room temperature using synchrotron x-ray diffraction. Experimental results were compared with first-principles calculations. The polymorph observed assumes the simple cubic structure (sc16) initially reported for GaAs at high pressures. Microdiffraction mapping showed variable grain sizes of the synthesized phase, with the largest grains located in the middle of the heated spot. Structural refinements were performed on selected grains. The structure predicted based on first-principles calculations is in close agreement with the experiments. The two Ga–P bonds show similar lengths in sc16-GaP; however, the bond angles differ, resulting in a distorted tetrahedral coordination geometry.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"42 1","pages":"294 - 302"},"PeriodicalIF":2.0,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48935565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-03DOI: 10.1080/08957959.2022.2102426
I. Podborodnikov, A. Shatskiy, A. Arefiev, A. Bekhtenova, K. Litasov
ABSTRACT Continuous variations in the composition of melt inclusions in diamonds from K-rich saline to carbonatitic indicate their possible genetic relationship. This causes interest in the study of chloride-carbonate systems at high pressure. Here we present experimental data on phase relations in the KCl–CaCO3 and KCl–MgCO3 systems at 6 GPa and 1000–1600 °C. The studied systems have the eutectic type of T-X diagrams. Subsolidus phases are represented by aragonite + KCl and magnesite + KCl. The KCl–CaCO3 eutectic is situated at 1200 °C and K2# 20, while the KCl–MgCO3 eutectic is located at 1400 °C and K2# 43, where K2# = 2KCl/(2KCl + CaCO3 + MgCO3)×100 mol%. The concentration of K and Cl in water-soluble chloride, and Ca, Mg, and CO2 in carbonate suggests that K-rich saline fluid entrapped by ‘fibrous’ diamonds could be a low-temperature derivative of a carbonatite melt containing KCl and H2O.
{"title":"The systems KCl–CaCO3 and KCl–MgCO3 at 6 GPa","authors":"I. Podborodnikov, A. Shatskiy, A. Arefiev, A. Bekhtenova, K. Litasov","doi":"10.1080/08957959.2022.2102426","DOIUrl":"https://doi.org/10.1080/08957959.2022.2102426","url":null,"abstract":"ABSTRACT\u0000 Continuous variations in the composition of melt inclusions in diamonds from K-rich saline to carbonatitic indicate their possible genetic relationship. This causes interest in the study of chloride-carbonate systems at high pressure. Here we present experimental data on phase relations in the KCl–CaCO3 and KCl–MgCO3 systems at 6 GPa and 1000–1600 °C. The studied systems have the eutectic type of T-X diagrams. Subsolidus phases are represented by aragonite + KCl and magnesite + KCl. The KCl–CaCO3 eutectic is situated at 1200 °C and K2# 20, while the KCl–MgCO3 eutectic is located at 1400 °C and K2# 43, where K2# = 2KCl/(2KCl + CaCO3 + MgCO3)×100 mol%. The concentration of K and Cl in water-soluble chloride, and Ca, Mg, and CO2 in carbonate suggests that K-rich saline fluid entrapped by ‘fibrous’ diamonds could be a low-temperature derivative of a carbonatite melt containing KCl and H2O.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"42 1","pages":"245 - 258"},"PeriodicalIF":2.0,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45282803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-03DOI: 10.1080/08957959.2022.2109968
A. Forestier, G. Weck, F. Datchi, P. Loubeyre
ABSTRACT VIPA-based Brillouin spectroscopy is implemented for in-situ measurements at high pressure and temperature in laser-heated diamond anvil cells. Its performances are compared to those of the widely used Tandem Fabry–Perot instrument. A significant reduction of the collection time is in particular enabled. The usefulness of VIPA-Brillouin spectroscopy for High Pressure studies is here illustrated by revisiting the nitrogen melting curve up to 45 GPa. VIPA-Brillouin spectroscopy has the potential to become an important platform to investigate the equation of state properties of warm dense molecular systems.
{"title":"Performances of a VIPA-based spectrometer for Brillouin scattering experiments in the diamond anvil cell under laser heating","authors":"A. Forestier, G. Weck, F. Datchi, P. Loubeyre","doi":"10.1080/08957959.2022.2109968","DOIUrl":"https://doi.org/10.1080/08957959.2022.2109968","url":null,"abstract":"ABSTRACT VIPA-based Brillouin spectroscopy is implemented for in-situ measurements at high pressure and temperature in laser-heated diamond anvil cells. Its performances are compared to those of the widely used Tandem Fabry–Perot instrument. A significant reduction of the collection time is in particular enabled. The usefulness of VIPA-Brillouin spectroscopy for High Pressure studies is here illustrated by revisiting the nitrogen melting curve up to 45 GPa. VIPA-Brillouin spectroscopy has the potential to become an important platform to investigate the equation of state properties of warm dense molecular systems.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"42 1","pages":"259 - 277"},"PeriodicalIF":2.0,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42690101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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