Quasimonoenergetic collimated electron beams from a laser wakefield acceleration in low density pure nitrogen

A laser wakefield acceleration (LWFA) experiment is performed using 30 TW, 30 fs, and 800 nm laser pulses, focused onto pure nitrogen plasma having relatively low densities in the range of 0.8×1018 cm−3 to 2.7×1018 cm−3. Electron beams having a low divergence of ∼3  mrad (full-width at half-maximum)...

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