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)
574 2015-11-28 10:00    Electron Tunneling Spectroscopy of Single and Bilayer Graphene with Hexagonal Boron Nitride as Tunneling Barrier
573 2015-12-01 16:00    Introducing extra dimensions to spectroscopic studies of advanced quantum materials
572 2015-12-02 16:00    Samarium Hexaboride: Is it a Topological insulator?
571 2015-12-03 16:00    Hybrid solid state spin qubits in wide bandgap semiconductors
570 2015-12-09 11:00    Functional Imaging & Monitoring of Brain & Breast with Diffuse Light
569 2015-12-09 14:00    SWELLABLE COLLOIDAL PARTICLES ARE SWELL
568 2015-12-11 13:30    Quantum spin liquid in the 1/3 depleted triangular lattice Ba3(Ru1-xIrx)Ti2O9
567 2015-12-11 15:45    Dynamical mean field theory studies on heavy fermion system
566 2015-12-17 11:00    Wavefront engineering for in-vivo Deep brain imaging
565 2016-01-11 16:00    Mott Physics in the Strong Spin-Orbit Coupling Regime
564 2016-01-26 14:00    Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data
563 2016-03-07 16:00    Physics Colloquium : 2016 Spring file
562 2016-03-11 13:30    Physics Seminar Serises : 2016 Spring file
561 2016-03-11 13:30    Topological phases of matter in nonequilibrium: Topology of the Wannier-Stark ladder
560 2016-03-11 16:00    Jan. Switching handedness of of chiral solitons in Z4 topological insulators
559 2016-04-01 14:30    Interference of single charged particles without a loop and dynamic nonlocality
558 2016-04-01 16:15    Cotunneling drag effect in Coulomb-coupled quantum dots
557 2016-04-04 09:30    Radio frequency engineering
556 2016-04-05 16:00    A new impurity solver for multi-orbital systems: adaptive truncation of the Hilbert space
555 2016-04-06 15:30    Superconducting Quantum Interference Devices for Precision Detection