Laser-Driven Proton-Boron Fusions: Influences of the Boron State

Figure 2

Mass density distributions of the proton beam and the electric field distributions at t = 1.3 ps for the boron solid in (a) and (c) and for the laser-ablated boron solid (boron plasma) in (b) and (d), respectively. The boron targets are located on the right side of the white dashed lines in (a) and (b). The black arrows in (a) and (b) indicate the incident direction of the proton beams, of which the angle is 45° to the z-axis. The white arrows in (c) and (d) are the directions of the electric fields. In (d), the white ‘’ means the electric field is magnified by a factor of 100, which generally suggests the real electric field in (d) is at least 100 times weaker than that in (c).