visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2015-11-10 16:00 
연사  
장소 E6-2, #1323 

“Rapid heating of matter using high power lasers

 

 Dr. Woosuk Bang

Physics division, Los Alamos National Laboratory

 

Nov. 10 (TUE), 4:00 p.m. , Seminar Room(#1323)

 

 With the development of several novel heating sources, scientists can now heat a small sample rapidly above 10,000 K. Although matter at such an extreme state, known as warm dense matter, is commonly found in astrophysics (e.g., in planetary cores) as well as in high energy density physics experiments, its properties are not well understood and are difficult to predict theoretically. A sufficiently large warm dense matter sample that is uniformly heated would be ideal for these studies, but has been unavailable to date. On the Trident laser facility at Los Alamos National Laboratory, we have used a beam of quasi-monoenergetic aluminum ions to heat gold and diamond foils rapidly and uniformly. For the first time, we visualized directly the expanding warm dense gold and diamond with an optical streak camera. We developed a new technique to determine the initial temperature of these heated samples from the measured expansion speeds of gold and diamond into vacuum. We anticipate the uniformly heated solid density target will allow for direct quantitative measurements of equation-of-state, conductivity, opacity, and stopping power of warm dense matter, benefiting plasma physics, astrophysics, and nuclear physics.

Using even smaller targets (~10 nm radius spheres of solid deuterium), ion temperatures exceeding 108 K have been achieved in the laboratory. We will discuss briefly about nuclear fusion experiments using high power lasers.

 

Contact: Yoonsoo Kim, Administration Office.  Tel. 2599

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)
505 2022-01-26 13:00    An Introduction to Cohomology groups file
504 2018-10-12 16:00    Direct observation of a two-dimensional hole gas at oxide interfaces file
503 2022-11-18 14:30    Kondo cloud condensation in a highly-doped semiconductor metal file
502 2025-05-01 16:00  Dr. Inwook Kim (Lawrence Livermore National Laboratory)  BSM Physics Search with Quantum Sensors file
501 2018-12-26 16:00    Brane-like defect in 3D toric code file
500 2019-07-31 16:00    Features of ballistic superconducting graphene file
499 2018-07-12 17:00    The MilliQan Experiment: Search for Milli-Charged Particles at the LHC
498 2016-12-09 13:30    Entanglement area law in strongly-correlated systems
497 2023-11-23 16:00    Deciphering the Enigma of Quantum Materials by X-ray Scattering and Spectroscopy
496 2019-10-16 16:00    Emergent black holes and monopoles from quantum fields file
495 2022-07-14 13:30    Electronic structure and anomalous transport properties of topological materials by first principle calculation
494 2016-11-24 16:00    Harmonic oscillator physics with single atoms in a state-selective optical potential
493 2015-09-07 15:00    Advanced Optical Materials and Devices at NRL
492 2021-05-14 16:00    Spatial and temporal separation of environmental dephasing sources from solid-state quantum emitters file
491 2016-04-12 16:00    Confinement of Superconducting Vortices in Magnetic Force Microscopy
490 2017-04-28 14:30    Hot electron generation at surfaces and its impact to catalysis and renewable energy conversion
489 2015-12-11 15:45    Dynamical mean field theory studies on heavy fermion system
488 2023-10-19 11:00    Emergent functionalities of iridium oxide films with different growth orientation file
487 2023-06-26 11:00    Quantum computing on magnetic racetracks with flying domain wall qubits
486 2019-04-19 11:00    First-principles studies of semiconductors for solar cell applications file