Influence of laser pulse duration on relativistic channels

Delfin, C.; Lokhnygin, V.; Mauritsson, J.; Sjögren, A.; Wahlström, C. G.; Pukhov, Alexander; Tsakiris, George D.

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Influence of laser pulse duration on relativistic channels

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Pukhov, Alexander
Theory, Max Planck Institute of Quantum Optics, Max Planck Society;

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Tsakiris, George D.
Laboratory for Attosecond Physics, Max Planck Institute of Quantum Optics, Max Planck Society;
Laser Plasma Physics, Max Planck Institute of Quantum Optics, Max Planck Society;

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Citation

Delfin, C., Lokhnygin, V., Mauritsson, J., Sjögren, A., Wahlström, C. G., Pukhov, A., et al. (2002). Influence of laser pulse duration on relativistic channels. Physics of Plasmas, 9(3), 937-940. Retrieved from http://ojps.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PHPAEN000009000003000937000001&idtype=cvips&gifs=Yes.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-C241-A

Abstract

A high-power (10 TW) laser is employed to generate relativistic channels in an underdense plasma. The lengths of the channels are measured by imaging the Thomson-scattered light, and the gas densities are determined through the forward Raman scattered light. The laser-pulse parameters are varied and their impact on the channel formation is studied. It is found that increasing the laser pulse duration in many cases produces longer channels, even as this implies reducing the laser peak power. A theoretical discussion is presented, proposing an explanation of the experimental results. (C) 2002 American Institute of Physics.