Temporal characterization of a self-modulated wakefield accelerator

S. P. Le Blanc; M. C. Downer; R. Wagner; S. Y. Chen; A. Maksimchuk; G. Mourou; D. Umstadter

Temporal characterization of a self-modulated wakefield accelerator

S. P. Le Blanc, M. C. Downer, R. Wagner, S. Y. Chen, A. Maksimchuk, G. Mourou, D. Umstadter

Research output: Contribution to conference › Paper › peer-review

Abstract

The amplitude, growth and decay rate of a self modulated wakefield was characterized by employing a femtosecond pump-probe experiment based on forward, collective Thomson scattering. A λ = 1 μm, τ = 400-fs laser pulse was focused onto a supersonic helium gas jet whose neutral density varied linearly with backing pressure. The plasma wave lifetime was probed by splitting off a small portion of the infrared laser pulse. The measured exponential rise time of the wakefield is in agreement with that expected from the of forward Raman scattering (FRS) instability. Since the total energy of the accelerated electron beam is approximately equal to the energy in the plasma wave, the measured exponential decay rate is consistent with the nonlinear Landau damping.

Original language	English
Pages	136
Number of pages	1
State	Published - 1997
Externally published	Yes
Event	Proceedings of the 1997 Conference on Quantum Electronics and Laser Science, QELS - Baltimore, MD, USA Duration: May 18 1997 → May 23 1997

Conference

Conference	Proceedings of the 1997 Conference on Quantum Electronics and Laser Science, QELS
City	Baltimore, MD, USA
Period	05/18/97 → 05/23/97

Cite this

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title = "Temporal characterization of a self-modulated wakefield accelerator",

abstract = "The amplitude, growth and decay rate of a self modulated wakefield was characterized by employing a femtosecond pump-probe experiment based on forward, collective Thomson scattering. A λ = 1 μm, τ = 400-fs laser pulse was focused onto a supersonic helium gas jet whose neutral density varied linearly with backing pressure. The plasma wave lifetime was probed by splitting off a small portion of the infrared laser pulse. The measured exponential rise time of the wakefield is in agreement with that expected from the of forward Raman scattering (FRS) instability. Since the total energy of the accelerated electron beam is approximately equal to the energy in the plasma wave, the measured exponential decay rate is consistent with the nonlinear Landau damping.",

author = "{Le Blanc}, {S. P.} and Downer, {M. C.} and R. Wagner and Chen, {S. Y.} and A. Maksimchuk and G. Mourou and D. Umstadter",

year = "1997",

language = "English",

pages = "136",

note = "Proceedings of the 1997 Conference on Quantum Electronics and Laser Science, QELS ; Conference date: 18-05-1997 Through 23-05-1997",

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TY - CONF

T1 - Temporal characterization of a self-modulated wakefield accelerator

AU - Le Blanc, S. P.

AU - Downer, M. C.

AU - Wagner, R.

AU - Chen, S. Y.

AU - Maksimchuk, A.

AU - Mourou, G.

AU - Umstadter, D.

PY - 1997

Y1 - 1997

N2 - The amplitude, growth and decay rate of a self modulated wakefield was characterized by employing a femtosecond pump-probe experiment based on forward, collective Thomson scattering. A λ = 1 μm, τ = 400-fs laser pulse was focused onto a supersonic helium gas jet whose neutral density varied linearly with backing pressure. The plasma wave lifetime was probed by splitting off a small portion of the infrared laser pulse. The measured exponential rise time of the wakefield is in agreement with that expected from the of forward Raman scattering (FRS) instability. Since the total energy of the accelerated electron beam is approximately equal to the energy in the plasma wave, the measured exponential decay rate is consistent with the nonlinear Landau damping.

AB - The amplitude, growth and decay rate of a self modulated wakefield was characterized by employing a femtosecond pump-probe experiment based on forward, collective Thomson scattering. A λ = 1 μm, τ = 400-fs laser pulse was focused onto a supersonic helium gas jet whose neutral density varied linearly with backing pressure. The plasma wave lifetime was probed by splitting off a small portion of the infrared laser pulse. The measured exponential rise time of the wakefield is in agreement with that expected from the of forward Raman scattering (FRS) instability. Since the total energy of the accelerated electron beam is approximately equal to the energy in the plasma wave, the measured exponential decay rate is consistent with the nonlinear Landau damping.

UR - http://www.scopus.com/inward/record.url?scp=0030646679&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:0030646679

SP - 136

T2 - Proceedings of the 1997 Conference on Quantum Electronics and Laser Science, QELS

Y2 - 18 May 1997 through 23 May 1997

ER -

Temporal characterization of a self-modulated wakefield accelerator

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