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24 April 2024 |
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Article overview
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Observation of Self-Sustaining Relativistic Ionization Wave Launched by Sheath Field | | M. W. McCormick
; A. V. Arefiev
; H. J. Quevedo
; R. D. Bengtson
; T. Ditmire
; | | Date: |
28 Aug 2013 | | Abstract: | We present experimental evidence supported by simulations of a relativistic
ionization wave launched into surrounding gas by the sheath field of a plasma
filament with high energy electrons. Such filament is created by irradiating a
clustering gas jet with a short pulse laser ($sim$115 fs) at a peak intensity
of $5 imes 10^{17}$ W/cm$^2$. We observe an ionization wave propagating
radially through the gas for about 2 ps at 0.2-0.5 $c$ after the laser has
passed, doubling the initial radius of the filament. The gas is ionized by the
sheath field, while the longevity of the wave is explained by a moving field
structure that traps the high energy electrons near the boundary, maintaining a
strong sheath field despite the significant expansion of the plasma. | | Source: | arXiv, 1308.6246 | | Services: | Forum | Review | PDF | Favorites | |
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