Photon accelerator

Laser Injection of Ultrashort Electron Pulses into Wakefield Plasma Waves

“…In another simulation, as shown in Figure 4, by using a second antiresonant pump pulse [9,13] to create only a single acceleration bucket, we have eliminated the electrons that get trapped in the later buckets. This also permitted the use of a longer duration (t 3l p ) injection pulse, reducing its longitudinal ponderomotive force and thus the electron energy spread, but without filling more than one bucket.…”

Laser shaping and optimization of the laser-plasma interaction

“…We therefore prove that the function ψ(ζ) = κ 0 ζ, where κ 0 ≡ ψ(ζ f ) crit /ζ f , is an integrated photon deceleration profile that maximizes the transformer ratio. The photon deceleration function associated with this ψ(ζ) is a constant κ(ζ) = κ 0 and the resulting laser shape is the same as given by (6). The optimal transformer ratio associated with this shape can be found from (10):…”

“…While the second step is the same for both accelerating schemes, the physics of driver energy deposition is quite different between them. In PWFA the electron beam loses energy to the plasma through interaction with the induced electrostatic field, while in the LWFA laser energy loss occurs via photon red-shift or deceleration [6]. This process can be understood as follows.…”

Propagation of electromagnetically generated wake fields in inhomogeneous magnetized plasmas

“…This has interesting applications to plasma based particle accelerators (Dawson 1994), photon acceleration (Wilks et al 1989;Mironov et al 1992;Mendonca 2001) and is naturally of importance for the general understanding of the interactions between plasmas and radiation. If the plasma is magnetized and the external magnetic field non-parallel to the direction of propagation of the exciting pulse, the wake field becomes partially electromagnetic and thereby obtains a nonzero group velocity (Brodin and Lundberg 1998).…”