Preliminary study for the laboratory experiment of cosmic-rays driven magnetic field amplification

Chun Sung Jao, Sergei Vafin, Ye Chen, Matthias Gross, Mikhail Krasilnikov, Gregor Loisch, Timon Mehrling, Jacek Niemiec, Anne Oppelt, Alberto Martinez de la Ossa, Jens Osterhoff, Martin Pohl, Frank Stephan

Research output: Contribution to journalArticlepeer-review

Abstract

To understand astrophysical magnetic-field amplification, we conducted a feasibility study for a laboratory experiment of a non-resonant streaming instability at the Photo Injector Test Facility at DESY, Zeuthen site (PITZ). This non-resonant streaming instability, also known as Bell's instability, is generally regarded as a candidate for the amplification of interstellar magnetic field in the upstream region of supernova-remnant shocks, which is crucial for the efficiency of diffusive shock acceleration. In the beam-plasma system composed of a radio-frequency electron gun and a gas-discharge plasma cell, the goal of our experiment is to demonstrate the development of the non-resonant streaming instability and to find its saturation level in the laboratory environment. Since we find that the electron beam will be significantly decelerated on account of an electrostatic streaming instability, which will decrease the growth rate of desired non-resonant streaming instability, we discuss possible ways to suppress the electrostatic streaming instability by considering the characteristics of a field-emission-based quasi continuous-wave electron beam.

Original languageEnglish
Pages (from-to)31-43
Number of pages13
JournalHigh Energy Density Physics
Volume32
DOIs
StatePublished - Jul 2019

Keywords

  • Beam-plasma instability
  • Field-emission-based quasi continuous-wave electron beam
  • Laboratory astrophysics
  • Magnetic field amplification
  • Radio-frequency electron gun

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