Baylor University and CASPER present:
Graduate Student, University of Texas - Austin
Low Density Waveguides for Laser Wakefield Acceleration
We simulate the possibility of scaling channel formation via inverse Bremsstrahlung (IB) heating to low-Z, low-ne plasmas using pulses up to 300 ps in duration, as well as generating tenuous plasmas of centimeter to meter lengths using femtosecond optical field ionization (OFI). Results show IB heating up to tens of eV, and channels formed from an initial density of 1 x 1018 cm-3 with axial densities as low as 1 x 1017 cm-3, and radius of 50µm. It has been shown that channel generation via OFI heating can generate waveguides at densities of ≈ 1 x 1017 cm-3 over distances of several centimeters; we will study how channel formation over these distances with an axicon forms from a computational and theoretical perspective. Lastly, we will outline the experimental setup to be used in future experiments at the U. Texas Tabletop Terawatt (UT3) facility.
 N. Lemos et al., Phys Plasmas, vol. 20, p. 103109, 2013.
 R. Shalloo et al., Phys Rev E., vol. 97, p. 053203, 2018.
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