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)
266 2016-08-04 14:30    Relational Logic (with applications to Quantum Mechanics, String Theory, Cosmology, Neutrino Oscillations, Statistical Mechanics)
265 2021-03-25 16:00    Search for dark matter axion with Rydberg atoms file
264 2023-06-01 16:00    Hall viscosity and topological phenomena
263 2018-07-09 14:00    The principles of collective learning file
262 2023-10-11 16:00    [CAPP seminar] Particle Physics with Neutrinos file
261 2019-05-30 16:00    Tuning the excitonic properties of semiconductors with light-matter interactions file
260 2014-12-22 14:00    Dynamics of molecular motors: Power stroke vs Brownian ratchet file
259 2019-05-03 11:00    Exotic Magnetism file
258 2015-03-04 12:00    Bioimaging and Biosensing Using Near-Infrared Fluorescence file
257 2022-10-04 16:00    Distinguishing 6d (1, 0) SCFTs
256 2023-11-15 16:00    Quantum hydrodynamic theory for plasmonics: from molecule-coupling to nonlinear optics
255 2016-03-07 16:00    Physics Colloquium : 2016 Spring file
254 2019-09-18 16:00    Fall 2019: Physics Seminar Serises file
253 2023-03-30 16:00    Detecting axions with chiral magnetic effects file
252 2019-02-21 16:00    B-meson charged current anomalies - Theoretical status file
251 2023-11-01 16:00    [High Energy Theory Seminar] Modular functions and 3D N=4 rank-zero superconformal field theories
250 2022-09-21 16:00    Materials and Device Nanofabrication of Optical Metasurfaces file
249 2023-03-27 15:00    A coherent mechanical oscillator pumped by a suspended quantum dot file
248 2025-06-26 16:00  Prof. Eun-Ah Kim (Cornell)  Attention to Quantum Complexity file
247 2022-06-03 11:00    (응집물리 세미나) Theoretical Investigation of Exotic Quantum States in Low-dimensional Materials