… strong longitudinal energy transfer. Here we present the first observation of direct longitudinal
laser acceleration of nonrelativistic electrons that undergo highly directional multi-GeV=m …

… to achieve strong longitudinal energy transfer directly from laser to particle. Here we present
the first observation of direct longitudinal laser acceleration of nonrelativistic electrons that …

… acceleration of a multi-electron bunch in free space, using the longitudinal field of an ultrafast
laser … This directly implies that any acceleration process in free space – regardless of pulse …

… We have shown that pre-acceleration of the electron or acceleration by a longitudinal electric
field can be extremely beneficial for achieving the resonance. This is because a reduction …

… (2013) Femtosecond 240-keV electron pulses from direct laser acceleration in a low-density …
insubstantial net particle acceleration in free space (assuming the purely-longitudinal on-…

… investigation of laser-driven electron acceleration in vacuum, … acceleration) [9–20], or the
force exerted by the longitudinal … where μ 0 is the permeability of free space. By choosing …

… longitudinal acceleration threshold in an RPLB and the maximum electron energy thus
available … from rest to GeV energies by ultrashort transverse magnetic laser pulses in free space …

… that reveals the importance of the longitudinal laser electric field in the course of the resonant
acceleration of relativistic electrons by a tightly confined laser beam. It is shown that this …

… longitudinal electric field on subsequent electron energy gain during acceleration by the
laser … the effect of the longitudinal electric field, we begin by considering electron motion in a …

… of the electron, and epsilon 0 is the permittivity of free space. … laser beam parameters where
considerable longitudinal and … of the tracked electrons versus the longitudinal energy gain …