Figure 9
From: Characteristics of Ions Emission from Ultrashort Laser Produced Plasma

Shows the angular resolved ion flux for both fast and slow ions.
Fast ion flux (a) seems to have narrower distribution compared to slow ion flux (b). Data presented here are results of 1.84 J/cm2 or 4.6 × 1013 W/cm2 laser target interaction with 45° incident angle, and the ions are collected by IC, 9 cm away from the target.