期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.134801
关键词
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资金
- Department of Energy [DE-AC02-76SF00515, DE-SC0009983]
- Department of Energy under DOE-BES [444025-PG-21414]
- U.S. Department of Energy (DOE) [DE-SC0009983] Funding Source: U.S. Department of Energy (DOE)
We show that the spectral properties of a self-amplified spontaneous emission x-ray free-electron laser can be controlled by modulating the gain in magnetic undulators, thus producing one or several spectral lines within a single few femtosecond pulse. By varying the magnetic field along the undulator and the electron beam transport line, the system we demonstrate can tailor the x-ray spectrum to optimally meet numerous experimental requirements for multicolor operation.
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