期刊
PHYSICAL REVIEW LETTERS
卷 119, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.064801
关键词
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资金
- NSFC [11425521, 11375006, 11535006, 11475101]
- National Basic Research Program of China [2013CBA01501]
- Foundation of CAEP [2014A0102003]
- U.S. DOE Grants [DE-SC0010064, DE-SC0008491, DE-SC0008316, DE-SC0014260]
- U.S. NSF Grants [PHY-1415386, ACI-1339893, PHY-500630]
- Ministry of Science and Technology of Taiwan [104-2112-M-001-030 MY3]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1415386] Funding Source: National Science Foundation
- U.S. Department of Energy (DOE) [DE-SC0008491, DE-SC0008316, DE-SC0010064, DE-SC0014260] Funding Source: U.S. Department of Energy (DOE)
We show that a high-energy electron bunch can be used to capture the instantaneous longitudinal and transverse field structures of the highly transient, microscopic, laser-excited relativistic wake with femtosecond resolution. The spatiotemporal evolution of wakefields in a plasma density up ramp is measured and the reversal of the plasma wake, where the wake wavelength at a particular point in space increases until the wake disappears completely only to reappear at a later time but propagating in the opposite direction, is observed for the first time by using this new technique.
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