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Measurements of the Growth and Saturation of Electron Weibel Instability in Optical-Field Ionized Plasmas.
Zhang, Chaojie; Hua, Jianfei; Wu, Yipeng; Fang, Yu; Ma, Yue; Zhang, Tianliang; Liu, Shuang; Peng, Bo; He, Yunxiao; Huang, Chen-Kang; Marsh, Ken A; Mori, Warren B; Lu, Wei; Joshi, Chan.
Afiliação
  • Zhang C; Department of Electrical Engineering, University of California Los Angeles, Los Angeles, California 90095, USA.
  • Hua J; Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
  • Wu Y; Department of Electrical Engineering, University of California Los Angeles, Los Angeles, California 90095, USA.
  • Fang Y; Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
  • Ma Y; Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
  • Zhang T; Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
  • Liu S; Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
  • Peng B; Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
  • He Y; Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
  • Huang CK; Department of Electrical Engineering, University of California Los Angeles, Los Angeles, California 90095, USA.
  • Marsh KA; Department of Electrical Engineering, University of California Los Angeles, Los Angeles, California 90095, USA.
  • Mori WB; Department of Electrical Engineering, University of California Los Angeles, Los Angeles, California 90095, USA.
  • Lu W; Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA.
  • Joshi C; Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
Phys Rev Lett ; 125(25): 255001, 2020 Dec 18.
Article em En | MEDLINE | ID: mdl-33416364
ABSTRACT
The temporal evolution of the magnetic field associated with electron thermal Weibel instability in optical-field ionized plasmas is measured using ultrashort (1.8 ps), relativistic (45 MeV) electron bunches from a linear accelerator. The self-generated magnetic fields are found to self-organize into a quasistatic structure consistent with a helicoid topology within a few picoseconds and such a structure lasts for tens of picoseconds in underdense plasmas. The measured growth rate agrees well with that predicted by the kinetic theory of plasmas taking into account collisions. Magnetic trapping is identified as the dominant saturation mechanism.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Estados Unidos
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Estados Unidos