visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2015-09-14 14:00 
연사  
장소 E6-2. 2nd fl. #2501 

Ultrafast X-ray Studies on Dynamics Matter in Extreme Conditions

 

2015/09/14(Mon) 2PM, E6-2. 2nd fl. #2501
Dr. Hae Ja Lee,  Stanford University, SLAC


Investigation of matter properties in extreme thermodynamic conditions has attracted numerous experimental and theoretical work motivated by its implication in shock wave physics, high pressure physic, geoscience, dense plasmas, warm dense matter, x-ray and laser created plasmas, and astrophysically relevant plasmas. Static compression studies using diamond anvil cells and synchrotron light source have revealed structural phase transitions of crystalline material under high pressure. Recent shock compression studies at high power optical laser facilities have accomplished measurements of material properties in extreme conditions beyond pressures generated by diamond anvil cells. In particular, dynamic compression experiments have contributed to produce and probe a broad range of extreme conditions on very short time scales. However, the understanding the atomic-level dynamic response of material under such conditions are not well understood yet. 
The LCLS free electron laser providing femtosecond pulses of keV x-rays with sufficient brilliance (~1012 photons /pulse) is well suited to examine dynamic responses in materials subject to a broad range of peak stresses (~ 5 GPa to above 100 GPa) and time durations (10s fs up to several hundred ns). Development of advanced diagnostic technique using LCLS beam permits experiments in the regimes of interest at the time and spatial scales of the simulations. This talk will present state-of-the-art experimental platform at MEC endstation and address phase transitions and dynamic responses of several materials including Bi, Si, SiO2 during shock loading. I will also look into the potential to advance our knowledge of the dynamic behavior.

 

Contact: EunJung Jo, Physics Dept., (jojo@kaist.ac.kr)

번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
585 2016-04-05 16:00    A new impurity solver for multi-orbital systems: adaptive truncation of the Hilbert space
584 2024-06-13 16:00    [CAPP seminars]Simulation, design and fabrication of Josephson Parametric Amplifiers for axion search file
583 2016-01-11 16:00    Mott Physics in the Strong Spin-Orbit Coupling Regime
582 2016-11-11 16:00    Dirac fermions in condensed matters
581 2019-06-28 14:00    1st Research-exchange meeting of computational material physics file
580 2025-06-05 11:00  Dr. Bruno Tomasello (University of Catania, Italy)  Crystal-Field Anisotropy and Low-Temperature Spin Seebeck in Terbium Iron Garnet file
579 2016-05-11 16:00    The quest for novel high-temperature superconductors---Prospects and progress in iridates
578 2018-02-12 15:00    The recent result of XMASS Experiment
577 2022-09-30 16:00    Spin-orbit torque-based spintronic devices file
576 2019-01-07 15:00    Many-Body Invariants for Multipoles in Higher-Order Topological Insulators file
575 2025-04-22 13:30  Dr. Chaebin Kim (Georgia Institute of Technology)  Emulation of quantum correlations by classical dynamics in quantum magnets file
574 2024-01-25 16:00    [CAPP seminars] Detecting Gravitational Waves by Elecromagnetic Cavity
573 2016-10-18 13:30    "Visualization of oxygen vacancy in motion and the interplay with electronic conduction"
572 2016-04-28 15:00    Lattice/Spin/Charge Coupling in 5d Pyrochlore Cd2Os2O7
571 2019-12-13 13:00    Computational Material Designs: Current Status and Future Directions file
570 2023-11-09 16:00    Assessing the Capability of Near-Term Photonic Devices Towards Quantum Supremacy
569 2018-09-04 14:30    Ultrafast time- and angle-resolved photoemission spectroscopy (tr-ARPES) with extreme ultraviolet laser pulses file
568 2016-04-08 16:00    Spectroscopic studies of iron-based superconductors : what have we learned?
567 2023-07-26 10:00    [CAPP Seminar] Am Expansive Search for Dark Matter with ADMX and DM Radio
566 2016-10-07 16:00    “Tilt engineering of 4d and 5d transition metal oxides?”