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and C. Joshi

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Last Name: Joshi

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1 paper

title: Efficient harmonic microbunching in a 7th-order inverse-free-electron laser interaction

format: journal article

year: 2009

8 authors: S. Ya. Tochitsky | O.B. Williams | P. Musumeci | C. Sung | D.J. Haberberger | A.M. Cook | J.B. Rosenzweig | and C. Joshi

abstract: We have shown that a seventh-order inverse-free-electron laser (IFEL) interaction, where the radiation frequency is the seventh harmonic of the fundamental resonant frequency, can microbunch a beam of relativistic electrons inside an undulator. Using coherent transition radiation (CTR) emitted by the bunched 12.3 MeV beam as a diagnostic, strong microbunching of the beam is inferred from the observation of CTR at the first, second, and third harmonics of the seed 10 m radiation. Threedimensional IFEL simulations show that the observed harmonic ratios can be explained only if transverse spatial distribution of the steepened bunched beam is taken into account.

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title:	Efficient harmonic microbunching in a 7th-order inverse-free-electron laser interaction
format:	journal article
year:	2009
8 authors:	S. Ya. Tochitsky \| O.B. Williams \| P. Musumeci \| C. Sung \| D.J. Haberberger \| A.M. Cook \| J.B. Rosenzweig \| and C. Joshi
abstract:	We have shown that a seventh-order inverse-free-electron laser (IFEL) interaction, where the radiation frequency is the seventh harmonic of the fundamental resonant frequency, can microbunch a beam of relativistic electrons inside an undulator. Using coherent transition radiation (CTR) emitted by the bunched 12.3 MeV beam as a diagnostic, strong microbunching of the beam is inferred from the observation of CTR at the first, second, and third harmonics of the seed 10 m radiation. Threedimensional IFEL simulations show that the observed harmonic ratios can be explained only if transverse spatial distribution of the steepened bunched beam is taken into account.
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