期刊
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
卷 14, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevSTAB.14.050703
关键词
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资金
- U.S. Department of Energy [DE-AC52-07NA27344]
- U.S. Department of Homeland Security [HSHQDC-09-X-00554/0001]
- Laboratory Directed Research and Development Program at LLNL [09-SI-004]
The design of narrow-band Compton scattering sources for specific applications using nuclear resonance fluorescence (NRF) is presented. NRF lines are extremely narrow (Delta E/E similar to 10(-6)) and require spectrally narrow sources to be excited selectively and efficiently. This paper focuses on the theory of spectral broadening mechanisms involved during Compton scattering of laser photons from relativistic electron beams. It is shown that in addition to the electron beam emittance, energy spread, and the laser parameters, nonlinear processes during the laser-electron interaction can have a detrimental effect on the gamma-ray source bandwidth, including a newly identified weakly nonlinear phase shift accumulated over the effective interaction duration. Finally, a design taking these mechanisms into consideration is outlined.
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