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- W2782012309 abstract "We present experiments and numerical simulations which demonstrate that fully ionized, low-density plasma channels could be formed by hydrodynamic expansion of plasma columns produced by optical field ionization. Simulations of the hydrodynamic expansion of plasma columns formed in hydrogen by an axicon lens show the generation of 200 mm long plasma channels with axial densities of order ${n}_{mathrm{e}}(0)=1ifmmodetimeselsetexttimesfi{}{10}^{17}phantom{rule{0.16em}{0ex}}{mathrm{cm}}^{ensuremath{-}3}$ and lowest-order modes of spot size ${W}_{mathrm{M}}ensuremath{approx}40phantom{rule{0.16em}{0ex}}ensuremath{mu}mathrm{m}$. These simulations show that the laser energy required to generate the channels is modest: of order 1 mJ per centimeter of channel. The simulations are confirmed by experiments with a spherical lens which show the formation of short plasma channels with $1.5ifmmodetimeselsetexttimesfi{}{10}^{17}phantom{rule{0.16em}{0ex}}{mathrm{cm}}^{ensuremath{-}3}ensuremath{lesssim}{n}_{mathrm{e}}(0)ensuremath{lesssim}1ifmmodetimeselsetexttimesfi{}{10}^{18}phantom{rule{0.16em}{0ex}}{mathrm{cm}}^{ensuremath{-}3}$ and $61phantom{rule{0.16em}{0ex}}ensuremath{mu}mathrm{m}ensuremath{gtrsim}{W}_{mathrm{M}}ensuremath{gtrsim}33phantom{rule{0.16em}{0ex}}ensuremath{mu}mathrm{m}$. Low-density plasma channels of this type would appear to be well suited as multi-GeV laser-plasma accelerator stages capable of long-term operation at high pulse repetition rates." @default.
- W2782012309 created "2018-01-12" @default.
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- W2782012309 date "2018-05-07" @default.
- W2782012309 modified "2023-10-15" @default.
- W2782012309 title "Hydrodynamic optical-field-ionized plasma channels" @default.
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- W2782012309 doi "https://doi.org/10.1103/physreve.97.053203" @default.
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