Observation of megagauss-field topology changes due to magnetic reconnection in laser-produced plasmas.

نویسندگان

  • C K Li
  • F H Séguin
  • J A Frenje
  • J R Rygg
  • R D Petrasso
  • R P J Town
  • O L Landen
  • J P Knauer
  • V A Smalyuk
چکیده

The spatial structure and temporal evolution of megagauss magnetic fields generated by interactions of up to 4 laser beams with matter were studied with an innovative, time-gated proton radiography method that produces images of unprecedented clarity because it uses an isotropic, truly monoenergetic back-lighter (14.7-MeV protons from D3He nuclear fusion reactions). Quantitative field maps reveal precisely and directly, for the first time, changes in the magnetic topology due to reconnection in a high-energy-density plasma (n(e) approximately 10(20)-10(22) cm(-3), T(e) approximately 1 keV).

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عنوان ژورنال:
  • Physical review letters

دوره 99 5  شماره 

صفحات  -

تاریخ انتشار 2007