Electron cavitation and generation of MeV ions produced by relativistically self-guided laser pulse in He gas jet

A. Maksimchuk, S. Gu, K. Flippo, S. Y. Chen, D. Umstadter, G. Mourou, G. S. Sarkisov, V. Yu Bychenkov, V. N. Novikov, V. T. Tikhonchuk

Research output: Contribution to conferencePaperpeer-review

Abstract

An interaction of ultra-high intensity short laser pulses with underdense plasma is of considerable interest from the standpoint of basic physics and its several potential applications. The ultrahigh electromagnetic fields in the laser focus produce extremely high pondermotive force that expels free electrons from the laser axis and relativistically modify the electron mass, plasma frequency and the plasma refractive index so that the plasma acts as a positive lens. These effects were studied by focusing 400 fs 6 TW laser beam with a vacuum intensity of 6.1018 W/cm2 on a high backing pressure supersonic He gas jet with a neutral density of nHeto approximately 4.1019 cm-3.

Original languageEnglish (US)
Pages94-95
Number of pages2
StatePublished - 1999
Externally publishedYes
EventProceedings of the 1999 Quantum Electronics and Laser Science Conference (QELS '99) - Baltimore, MD, USA
Duration: May 23 1999May 28 1999

Conference

ConferenceProceedings of the 1999 Quantum Electronics and Laser Science Conference (QELS '99)
CityBaltimore, MD, USA
Period5/23/995/28/99

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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