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Femtosecond, two-dimensional spatial Doppler mapping of ultraintense laser-solid target interaction

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Author(s)

  • Kamalesh Jana
  • Amit D. Lad
  • David West
  • William Trickey
  • Christopher Underwood
  • Yash M. Ved
  • A.P.L. Robinson
  • John Richard Pasley
  • G. Ravindra Kumar

Department/unit(s)

Publication details

JournalPhysical Review Research
DateAccepted/In press - 11 May 2021
Original languageEnglish

Abstract

We present measurements of the spatio-temporal evolution of a hot-dense plasma generated by the interaction of an intense 25 femtosecond laser pulse with a solid target, using pump-probe two-dimensional Doppler spectrometry. Measuring the time-dependent Doppler shifts at different positions across the probe beam, we achieve velocity mapping at hundreds of femtoseconds time resolution simultaneously with a few micrometer spatial resolution across the transverse length of the plasma. Simulations of the interaction using a combination of 2D particle-in-cell (PIC) and 2D radiation hydrodynamics codes agree well with the experiment.

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