Journal
PHYSICS OF PLASMAS
Volume 19, Issue 3, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.3694679
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Funding
- 973 Program [2011CB808104]
- Program of Shanghai Subject Chief Scientist [09XD1404300]
- National Natural Science Foundation of China [11125526, 10834008, 10835003, 61008010, 10975121, 60921004]
- Foundation of CAEP [2006Z0202, 2009A0102003]
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Energetic electron bunches with more than 20 nC charge are generated from 100 TW level laser pulse interaction with 2% critical density plasma. Three-dimensional particle-in-cell simulations show that the unexpected high bunch-charge can be attributed to the multiple intensity peaks of the laser pulse and the resulting multiple-bubble wake structure. This charge is one of the highest among experiments on electron-bunch generation by laser-plasma interaction. Such highly charged ultra-short electron bunches are crucial for producing sufficiently bright Bremsstrahlung x-rays required in high-resolution flash radiography of large samples. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3694679]
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