When a beam of energetic electrons travels through a plasma, the space charge at the tip of the beam knocks electrons from the ions in the plasma, leaving the ions with a larger positive charge. If ...

SELF-BENDING light beams capable of turning a corner like a boomerang are darting around an optics laboratory in France. The beams are just a few micrometres across, and could improve the way in which ...

When a 'beam' experiences a bending moment it will change its shape and internal stresses (forces) will be developed. The photograph illustrates the shape change of elements of a beam in bending. Note ...

Gilson is part of the Virtual National Laboratory for Heavy-Ion Fusion, a partnership between the PPPL, E.O. Lawrence Berkeley Lab and Lawrence Livermore National Laboratory in California. According ...

Five years ago physicists showed that certain kinds of laser beam can follow curved trajectories in free space. Such counterintuitive behaviour could have a number of applications, from manipulating ...