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N. Piovella

First Name: N.

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Last Name: Piovella

Full Name: N. Piovella

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2 papers
title: Spectrum, temporal structure, and fluctuations in a high-gain free-electron laser starting from noise
format: journal article
publisher: Physical Review Letters
year: 1994
5 authors: R. Bonifacio | L. De Salvo | P. Pierini | N. Piovella | C. Pellegrini
abstract: We study the time structure, the frequency composition, and the shot to shot fluctuations of the radiation emitted by a free-electron laser starting from shot noise in the electron beam longitudinal distribution, taking into account slippage and finite bunch length effects. We find a very different behavior when the bunch length, l/sub b/, is much longer than the cooperation length, l/sub c/, or of the order of a few l/sub c/. The field evolution is dominated by slippage effects in both cases, and shows the presence of superradiant spikes. (14 References).
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title: A Study of Linewidth, Noise and Fluctuations in a FEL Operating in SASE
format: conference proceeding
conference: FEL 1993 15th
year: 1994
5 authors: Bonifacio, R. | De Salvo, L. | P. Pierini | Piovella, N. | C. Pellegrini
abstract: We study the evolution of the FEL radiation intensity and spectrum starting from noise in the electron beam longitudinal distribution. Due to the slippage both the time and frequency structure of the emitted radiation pulse show a very different behavior when the bunch length is much longer than or of the order of the cooperation length l(c). The occurrence of superradiant spikes is discussed. We present analytical and numerical results.
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