Fig. 1: Sketch of the backscattering experiment setup and the laser pulse.
From: Revealing crossed-beam energy transfer as the origin of asymmetric backscattering in hohlraums

Red dotted line represents the power of heat beams of which the laser pulse before 1 ns is used to ablate the polyimide window over the laser entrance hole. Blue solid line represents the power of interaction beams. The beam incident angles from outer to inner are 55∘ (blue), 49.5∘ (cyan), 35∘ (pink) and 28.5∘ (red). The backscattered lights of Beams A1 and A2 are diagnosed by two sets of Full Aperture Backscatter Station (FABS).