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R. B. Yoder

First Name: R.

Middle Name: B.

Last Name: Yoder

Full Name: R. B. Yoder

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1 paper

title: Experiments on laser driven beatwave acceleration in a ponderomotively formed plasma channel

format: journal article

year: 2004

10 authors: S. Ya. Tochitsky | R. Narang | C. V. Filip | P. Musumeci | C. E. Clayton | R. B. Yoder | K. A. Marsh | J. B. Rosenzweig | C. Pellegrini | C. Joshi

abstract: A 10 ps long beam of 12 MeV electrons is externally injected into a ~3-cm long plasma beatwave excited in a laser ionized hydrogen gas. The electrons have been accelerated to 50 MeV with a gradient of ~1.3 GeV/m. It is shown that when the effective plasma wave amplitude-length product is limited by ionization-induced defocusing (IID), acceleration of electrons is significantly enhanced by using a laser pulse with a duration longer than the time required for ions to move across the laser spot size. Both experiments and two-dimensional simulations reveal that, in this case, self-guiding of the laser pulse in a ponderomotively formed plasma channel occurs. This compensates for IID and drives the beatwave over the longer length compared to when such a channel is not present.

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title:	Experiments on laser driven beatwave acceleration in a ponderomotively formed plasma channel
format:	journal article
year:	2004
10 authors:	S. Ya. Tochitsky \| R. Narang \| C. V. Filip \| P. Musumeci \| C. E. Clayton \| R. B. Yoder \| K. A. Marsh \| J. B. Rosenzweig \| C. Pellegrini \| C. Joshi
abstract:	A 10 ps long beam of 12 MeV electrons is externally injected into a ~3-cm long plasma beatwave excited in a laser ionized hydrogen gas. The electrons have been accelerated to 50 MeV with a gradient of ~1.3 GeV/m. It is shown that when the effective plasma wave amplitude-length product is limited by ionization-induced defocusing (IID), acceleration of electrons is significantly enhanced by using a laser pulse with a duration longer than the time required for ions to move across the laser spot size. Both experiments and two-dimensional simulations reveal that, in this case, self-guiding of the laser pulse in a ponderomotively formed plasma channel occurs. This compensates for IID and drives the beatwave over the longer length compared to when such a channel is not present.
keywords:	pbpl
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