Journal
APPLIED PHYSICS LETTERS
Volume 112, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5030942
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Funding
- National Basic Research Program of China [2013CBA01502, 11475010]
- NSFC [11535001, 11575011]
- National Grand Instrument Project [2012YQ030142]
- National Key Research and Development Program of China [SQ2016zy04003194]
- China Postdoctoral Science Foundation [2016M600007, 2017T100009]
- UK EPSRC [EP/G054950/1]
- STFC [ST/P000835/1, ST/P002021/1, ST/J002062/1] Funding Source: UKRI
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A scheme to radiate a highly collimated gamma-ray pulse is proposed through the interaction between an ultra-intense laser pulse and a narrow tube target. The gamma-ray pulse, with high conversion efficiency, can be generated as a result of electron acceleration in a longitudinal electric field. In a Particle-inCell simulation with a 10-PW laser, 18% of the laser energy is transferred into the forward gamma-ray in a divergence angle less than 3 degrees. It is also found that such a highly collimated gamma-ray pulse can be produced with a large range of tube diameters and laser intensities. This scheme could be realized in experiment with the coming 10-PW class lasers in the near future. Published by AIP Publishing.
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