Coherent spontaneous emission in high gain free-electron lasers.

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The authors investigate finite pulse effects in self-amplified spontaneous emission (SASE), especially the role of coherent spontaneous emission (CSE) in the start and the evolution of the free-electron laser (FEL) process. When the FEL interaction is negligible, they solve the one-dimensional Maxwell equation exactly and clarify the meaning of the slowly varying envelope approximation (SVEA). In the exponential gain regime, they solve the coupled Vlasov-Maxwell equations and extend the linear theory to a bunched beam with energy spread. A time-dependent, non-linear simulation algorithm is employed to study the CSE effect for a general beam distribution.

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5 p.

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muang, Z. April 14, 1999.

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Description

The authors investigate finite pulse effects in self-amplified spontaneous emission (SASE), especially the role of coherent spontaneous emission (CSE) in the start and the evolution of the free-electron laser (FEL) process. When the FEL interaction is negligible, they solve the one-dimensional Maxwell equation exactly and clarify the meaning of the slowly varying envelope approximation (SVEA). In the exponential gain regime, they solve the coupled Vlasov-Maxwell equations and extend the linear theory to a bunched beam with energy spread. A time-dependent, non-linear simulation algorithm is employed to study the CSE effect for a general beam distribution.

Physical Description

5 p.

Notes

INIS; OSTI as DE00011126

Medium: P; Size: 5 pages

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  • 1999 Particle Accelerator Conference (PAC '99), New York, NY (US), 03/29/1999--04/02/1999

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  • Report No.: ANL/ASD/CP-97720
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 11126
  • Archival Resource Key: ark:/67531/metadc621203

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  • April 14, 1999

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  • June 16, 2015, 7:43 a.m.

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  • April 11, 2017, 12:15 p.m.

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muang, Z. Coherent spontaneous emission in high gain free-electron lasers., article, April 14, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc621203/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.