9 papers · 1 filter
Laser ion acceleration from concave targets by subpicosecond pulses
K. V. Lezhnin, V. Ospina-Bohórquez, J. Griff-McMahon +6
Laser-driven proton acceleration provides a powerful route for generating ultrashort, high-charge proton beams. Many applications, including secondary neutron sources and inertial…
Evolution of laser-driven magnetic fields from proton tomography
J. Griff-McMahon, V. Valenzuela-Villaseca, C. A. Walsh +9
Self-generated magnetic fields are commonly produced in high-power laser-plasma interactions. These fields can inhibit plasma heat-flow which makes them important in inertial fusio…
Geometric scaling of laser-driven proton focusing from hemispherical foils
Jesse Griff-McMahon, Xavier Vaisseau, William Fox +7
We systematically characterize the focusing behavior of laser-driven proton beams from hemispherical targets of various diameters using mesh radiography. The proton focal location…
Reconstruction of 2D line-integrated electron density using angular filter refractometry and a fast marching Eikonal solver
Brendan McCluskey, Jesse Griff-McMahon, Daniel Haberberger +3
Refraction of an optical probe beam by a plasma can be measured with angular filter refractometry (AFR), which produces an image containing intensity contours that correspond to cu…
Record Magnetic Field Generation by Short-Pulse Laser-Driven Capacitor-Coil Targets
Lan Gao, Yang Zhang, Hantao Ji +6
Magnetic fields generated by capacitor-coil targets driven by intense short-pulse lasers have been characterized using ultrafast proton radiography. A 1-kJ, 15-ps laser at a center…
Diagnosing electric and magnetic fields in laser-driven coil targets
Yang Zhang, Lan Gao, Hantao Ji +6
Laser-driven capacitor coils are widely used to generate intense magnetic fields for various applications in high-energy-density physics research. Accurate measurement of the magne…