Ultrahigh-charge electron beams from laser-irradiated solid surface

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Abstract
Significance: In the last three decades, the laser–plasma accelerator (LPA) has shown a rapid development owing to its super–high-accelerate gradients, which makes it a very promising compact accelerator and light source. Acceleration of a high-quality electron beam with divergence angle as small as possible and beam charge as high as possible has been a long-term goal ever since the inception of the LPA concept. However, until now the most popular acceleration scenario has failed to achieve both goals. We solved this problem and obtained tightly collimated electron beams with small divergence angle and extremely high beam charge ( ∼ 100 nC) via the powerful p s laser pulse interacting with a solid target.
Funding Information
  • National Basic Research Program of China (2013CBA01500)
  • National Key R&D Program of China (2017YFA040330X)
  • National Natural Science Foundation of China (11334013, 11721404)
  • NSAF (U1530150)
  • the CAS key program (XDB17030500)
  • Science Challenge Project (TZ2018005)
  • the MOST International Collaboration (2014DFG02330)
  • the U.K. EPSRC grant (EP/N028694/1)

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