A combined crew of researchers from the University of Ottawa and National Research Council Canada has created a new way to generate strong magnetic fields using laser pulses. In their paper printed in the journal Physical Review Letters, the researchers define their unique technique and the methods it might be used.
Over the previous several years, magnetic fields have become more vital in a variety of analysis areas, along with drugs. However, a way to produce strong magnetic fields rapidly has been lagging. In this new project, the researchers have found a way to overcome issues related to prior attempts to rush magnetic field generation.
The new work builds on prior attempts to make use of lasers to accelerate the process—these experiments have been used to push electrons in plasma around a loop; however, such units require very strong lasers that are solely available at a few analysis websites. Also, in prior attempts to use lasers, researchers have aimed their lasers configured as an optical vortex in a gas.
The researchers with this new effort instead suggest an azimuthal-vector laser beam. In such a system, the electric subject lines ought to take the shape of circles around a central beam axis.
The system is most intense in the ring-shaped part of the region. That ought to allow for sending an electron around the ring, producing a magnetic field in the direction of the beam. The researchers’ concept introduces a second laser with a frequency tuned to twice that of the primary beam.
This changes the timing of the process, allowing electrons to maneuver when the field is at its peak.