High Pressure Lab at UT Austin

Size: px

Start display at page:

Download "High Pressure Lab at UT Austin"

Dinah Reed
5 years ago
Views:

High Pressure Lab at UT Austin Jackson School of Geosciences is funded by John and Katherine Jackson s generous

has a total endowment of ~400-500 million dollars.

bio-geosciences, water resource, and climate change.

1 High Pressure Lab at UT Austin Jackson School of Geosciences is funded by John and Katherine Jackson s generous endowment, the most generous contribution ever to a single department; ~280 million dollars Geology Foundation has a total endowment of ~ million dollars. Jackson School of Geosciences matches $124K to support Lin s EFree grant of $300K to fully support a postdoc for 4.5 years. Strong ties to energy related research, including oil exploration, CO2 sequestration, gas hydrates, bio-geosciences, water resource, and climate change. Center for Frontiers of Subsurface Energy Security (CFCES) at UT Austin. Afu Lin joined UT Austin as a faculty in July Welcome prospective students and scholars; 5 years of scholarships in the initial offer to PhD students (tuition, salary, and insurance) Assistant Professor Afu Lin Postdoc Fellow Dr. Zhu Mao PhD Student Cecilia Xu

2 UT Austin s Facilities For High-Pressure Research Sample prep lab with microscope, EDM, mechanical drilling, and many types of DAC Planned: fast laser spectroscopy and HP gas loading system Optical Raman system with Verdi V2 laser and Andor iccd Table for Ultrafast Laser Spectroscopy Planned Gas Loading System (~LLNL) Lab Under Construction Raman study in an EHDAC

$Diffraction at >Mbars and HT High-resolution IXS Mössbauer spectroscopy X-ray emission$ spectroscopy Resonant X-ray emission X-ray Raman spectroscopy Properties at Extremes

spectroscopy Resonant X-ray emission X-ray Raman spectroscopy Properties at Extremes

$X-Composition, t-time IXS in LHDAC Wide-opening EHDAC X-ray Diffraction at 2 Mbars cbn insert$

3 UT Austin s Expertise In Situ Synchrotron and Optical Spectroscopies at High PT IXS Techniques Diffraction at >Mbars and HT High-resolution IXS Mössbauer spectroscopy X-ray emission spectroscopy Resonant X-ray emission X-ray Raman spectroscopy Properties at Extremes Structures/Transitions/EoS Lattice dynamics/phonon DoS Hyperfine parameters (QS/IS) Total spin momentum (S) 3d-4f electronic structures Local Electronic structures Pressure, Temperature, X-Composition, t-time IXS in LHDAC Wide-opening EHDAC X-ray Diffraction at 2 Mbars cbn insert with ultrapure Be

4 Research Interest in EFree 3d/4f-electron compounds under P-T P T extremes Extreme stress/strain using dynamic DAC Cutting-edge science/high-profile publications

Here UT Austin team aims to study y their electronic structures and associated changes (interplays) in physical

5 1. 3d Transition Metal Compounds 3d transition metals form a series of compounds with a uniquely wide range of electronic properties. Here UT Austin team aims to study y their electronic structures and associated changes (interplays) in physical properties, including spin transitions, metallization, and magnetic transitions under high pressure-temperature conditions using an array of recently developed synchrotron IXS and high P-T P T techniques Geosciences Implications Novel materials

2. 4f-electron Metals and Compounds McMahan, 1998 Research will focus on the interconnected 4f-electron elements and compounds, focusing on discovering new structures in the vast P-T space

6 2. 4f-electron Metals and Compounds McMahan, 1998 Research will focus on the interconnected 4f-electron elements and compounds, focusing on discovering new structures in the vast P-T space and understanding the interplays between their crystal structures, electronic structures (including trivalent and divalent states), and lattice dynamics. Ties to DOE/LLNL/CDAC research interests.

3. Stress/Strain Extremes and Kinetics Anelasticity σij=cijklεkl Nemat-Nasser and Choi, 2005 Seismic Attenuation Factor (Q Factor) 2π Q 2πE Material properties can behave quite

7 3. Stress/Strain Extremes and Kinetics Anelasticity σij=cijklεkl Nemat-Nasser and Choi, 2005 Seismic Attenuation Factor (Q Factor) 2π Q 2πE Material properties can behave quite differently at various regimes of stress/strain rates. Anelasticity arises from the time-dependent relation between stress and strain. Require vigorous technical developments! Q ΔE E 1 Δ E

8 Complementary Expertise and Facilities from EFree Information/expertise for building HP apparatus and lab at UT Austin Access and collaboration in synchrotron and optical spectroscopies Theoretical understanding on 3d-4f compounds Help with recruit a postdoc and students with strong background in physics and X-ray/optical X spectroscopies.. The project will involve a postdoc (4.5 yrs) and a number of graduate students.

Economic Geology Unconventional Energy Research

Bureau of Economic Geology Unconventional Energy Research Overview for CEE meeting December, 2011 QAd2349x BUREAU OF ECONOMIC GEOLOGY Oldest research unit of The University of Texas at Austin Geological