期刊
PHYSICAL REVIEW LETTERS
卷 108, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.094801
关键词
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资金
- U.S. Department of Energy [DE-AC02-05CH11231]
- DTRA [WF006631B]
- National Science Foundation [PHY-0935197, PHY-0917687]
- China Scholarship Council
- Direct For Mathematical & Physical Scien
- Division Of Physics [0935197] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [0917687] Funding Source: National Science Foundation
Laser plasma accelerators have produced femtosecond electron bunches with a relative energy spread ranging from 100% to a few percent. Simulations indicate that the measured energy spread can be dominated by a correlated spread, with the slice spread significantly lower. Measurements of coherent optical transition radiation are presented for broad-energy-spread beams with laser-induced density and momentum modulations. The long-range (meter-scale) observation of coherent optical transition radiation indicates that the slice energy spread is below the percent level to preserve the modulations.
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