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
531 2015-11-19 16:00    Emergent Collective Phenomena and Functions at Reduced Dimensions
530 2016-05-16 16:00    Tuning microwave cavities with biased nonlinear dielectrics for axion searches
529 2018-10-12 14:30    Quantum Advantage in Learning Parity with Noise file
528 2023-04-04 16:00    Chiral Magnetism: A Geometric Perspective
527 2018-06-22 16:00    Tuning functional properties of BiFeO3 films using strain and growth chemistry file
526 2018-06-22 16:00    Tuning functional properties of BiFeO3 films using strain and growth chemistry file
525 2018-09-05 16:00    Shining a light on fractional excitations file
524 2022-03-18 11:00    (응집물리 세미나) Illuminating exotic states of matter: Raman spectroscopy as an experimental tool to characterize quantum spin liquids file
523 2021-03-02 16:00    Sensitive terahertz detection with graphene-based transistors file
522 2020-11-20 16:00    Coherent control of field gradient induced quantum dot spin qubits
521 2016-11-04 15:00    Quantum information experiments using few electron spins in semiconductors
520 2022-01-17 14:00    Five Lectures on Observational Probes of Dark Energy file
519 2018-11-09 16:00    Quantum sensing and imaging with diamond defect centers for nano-scale spin physics file
518 2022-11-18 16:00    Qubits, new experimental tools for physics file
517 2020-11-20 14:30    Lumpy Cooper pairs in an iron-based superconductor
516 2017-07-10 16:00    “Intertwined Orders in a Heavy-fermion metal” file
515 2022-05-25 14:00    Atomic-level insights into ferroelectric switching and preferred orientation of ultrathin hafnia file
514 2023-04-28 11:00    Tkachenko wave: From the modern field theory viewpoint
513 2018-10-18 10:00    Understanding membrane protein folding using single-molecule force techniques file
512 2023-07-19 16:00    [High-Energy Theory Seminar]Deriving the Simplest Gauge-String Duality