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2018/12/11(二)13:00綜合大樓1樓48111B教室演講 : 饒駿頌 博士(Astroparticle Physics Theory Group, DESY)

張貼者:2018年12月4日 下午7:47Dabby Lu
講題:The study of streaming instability in space, astrophysical, and laboratory plasmas
摘要:With important applications to space, astrophysical, and laboratory environments, plasma wave excitation led by the drift energy of streaming particles (streaming instability) is an extensively studied phenomenon in plasma physics.  In the Sun-Earth environment, for instance, the electrostatic streaming instability is generally considered to lie in the origin of the observed electrostatic solitary waves and in the core mechanism of type III solar radio bursts.  As in astrophysical environments, a non-resonant type electromagnetic streaming instability is also proposed as a candidate for the amplification of interstellar magnetic fields in the upstream region of supernova remnant shocks, which plays an important role in the efficiency of cosmic-ray particle acceleration.

In this talk I will present my past studies of streaming instability problems from linear theory and numerical simulation, to the application to laboratory astrophysics experiments. The research topics include the formation of phase-space electron-hole structure in the electron-positron plasma, fire-hose-type electromagnetic streaming instabilities, and cosmic-rays driven magnetic field amplification.  Together with these ongoing projects, I will also discuss potential future approaches within this rich research field.
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Dabby Lu,
2018年12月4日 下午7:47
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