期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.045001
关键词
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资金
- NSFC [11205243, 91230205, 11175253, 11175255, 11121504, 10935002]
- NSAF [10976031]
- DFG program TR18
- U.S. DOE [DE-FG02-04ER41321]
By using multidimensional particle-in-cell simulations, we study the electromagnetic emission from radiation pressure acceleration of ultrathin mass-limited foils. When a circularly polarized laser pulse irradiates the foil, the laser radiation pressure pushes the foil forward as a whole. The outer wings of the pulse continue to propagate and act as a natural undulator. Electrons move together with ions longitudinally but oscillate around the latter transversely, forming a self-organized helical electron bunch. When the electron oscillation frequency coincides with the laser frequency as witnessed by the electron, betatronlike resonance occurs. The emitted x rays by the resonant electrons have high brightness, short durations, and broad band ranges which may have diverse applications. DOI: 10.1103/PhysRevLett.110.045001
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