Generation of strong pulsed magnetic fields using a compact, short pulse generator

Abstract

The generation of strong magnetic fields ($50 T) using single-or multi-turn coils immersed in water was studied. A pulse generator with stored energy of $3.6 kJ, discharge current amplitude of $220 kA, and rise time of $1.5 ls was used in these experiments. Using the advantage of water that it has a large Verdet constant, the magnetic field was measured using the non-disturbing method of Faraday rotation of a polarized collimated laser beam. This approach does not require the use of magnetic probes, which are sensitive to electromagnetic noise and damaged in each shot. It also avoids the possible formation of plasma by either a flashover along the conductor or gas breakdown inside the coil caused by an induced electric field. In addition, it was shown that this approach can be used successfully to investigate the interesting phenomenon of magnetic field enhanced diffusion into a conductor. V

Tunable Tesla-Scale Magnetic Attosecond Pulses through Ring-Current Gating

“…24 Such magnetic sources are particularly effective in quasi-static magnetic phenomena or long-duration magnetization dynamics. 25 Also, more sophisticated strategies have been applied to improve the field strength, reaching up to 100 T in a magnetic texture. 26 However, these approaches do not provide a straightforward way to generate ultrashort magnetic pulses, which could initiate and probe ultrafast spin responses, chirality, or magnetic dynamics at a high temporal resolution.…”

“…The conventional generation of strong magnetic fields typically relies on conducting or superconducting materials arranged into loops or coils where the electric current flows . Such magnetic sources are particularly effective in quasi-static magnetic phenomena or long-duration magnetization dynamics . Also, more sophisticated strategies have been applied to improve the field strength, reaching up to 100 T in a magnetic texture .…”