visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2015-11-10 16:00 
일시 2015/11/10, 4PM 
장소 E6-2, #1323 
연사 Dr. Woosuk Bang (Physics division, Los Alamos National Laboratory) 

“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 장소 제목
242 2015-12-11 13:30  E6-2, #1323  Quantum spin liquid in the 1/3 depleted triangular lattice Ba3(Ru1-xIrx)Ti2O9
241 2016-01-11 16:00  E6-2, #1323  Mott Physics in the Strong Spin-Orbit Coupling Regime
240 2016-09-29 16:00  E6-2, #1323  2016 Fall, Physics Seminar Serises file
239 2015-12-03 16:00  E6-2, #1323  Hybrid solid state spin qubits in wide bandgap semiconductors
» 2015-11-10 16:00  E6-2, #1323  Rapid heating of matter using high power lasers
237 2015-11-23 13:30  E6-2, #1323  What's Beyond the Standard Model? Lessons from Run I and what might come in Run II
236 2019-07-31 16:00  E6-2, #1323  Features of ballistic superconducting graphene file
235 2019-06-24 11:00  E6-2, #1323  Topological photonic anomalies file
234 2015-12-09 14:00  E6-2, #1323  SWELLABLE COLLOIDAL PARTICLES ARE SWELL
233 2015-12-02 16:00  E6-2, #1323  Samarium Hexaboride: Is it a Topological insulator?
232 2015-12-11 15:45  E6-2, #1323  Dynamical mean field theory studies on heavy fermion system
231 2015-12-01 16:00  E6-2, #1323  Introducing extra dimensions to spectroscopic studies of advanced quantum materials
230 2016-01-26 14:00  E6-2, #1323  Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data
229 2019-07-25 16:00  E6-2, #1323  Band topology of twisted bilayer graphene file
228 2015-08-03 10:30  E6-2, #1323 (Seminar Room)  Axion Search
227 2024-03-27 16:00  E6-2, #2502  [High Energy Theory Seminar] The Callan Rubakov Effect
226 2023-09-13 16:00  E6-2, #2502  [High Energy Theory Seminar] Cosmic Birefringence from Dark Photon
225 2023-05-31 16:00  E6-2, #2502  [High-Energy Theory Seminar] Resurgence and complex Chern-Simons theory
224 2024-01-16 16:00  E6-2, #2502  [High Energy Theory Seminar] Towards quantum black hole microstates
223 2023-04-05 16:00  E6-2, #2502  [High Energy Theory Seminar]Anomalies of Discrete 1-Form Symmetries in QCD-like Theories