Figure 5: Density of the leptonic beam
From: Generation of neutral and high-density electron–positron pair plasmas in the laboratory
(a) Number of relativistic electrons (
, green crosses) and positrons (
, brown circles) in the beam as a function of the thickness d of the solid target. (b) Density of relativistic electrons (green crosses) and positrons (brown empty circles) as a function of the thickness d of the solid target. The solid lines represent the density in the laboratory reference frame, whereas dashed lines represent the beam proper density. A neutral electron–positron plasma is obtained for d≥2.5 cm. Lines are drawn only as a guide for the eye.
