Abstract: Disclosed herein are systems and methods for generating a rotating magnetic field. The rotating magnetic field can be used to obtain rotating-field NMR spectra, such as magic angle spinning spectra, without having to physically rotate the sample. This result allows magic angle spinning NMR to be conducted on biological samples such as live animals, including humans.

Abstract: The invention is embodied in a magnetically enhanced plasma reactor for processing a semiconductor workpiece, including a reactor enclosure defining a vacuum chamber, a wafer support for holding the workpiece inside the chamber, a plasma power source for applying plasma source power into the chamber, a first plurality of electrically conductive elongate filaments, each being of a finite length, distributed about a periphery of the chamber enclosure, each of said filaments extending at least generally in an axial direction relative to the chamber. The plurality of filaments is capable of permitting different currents through different ones of at least some of the filaments in accordance with a distribution of currents among the filaments corresponding to a desired magnetic field configuration. Respective current sources are preferably connected to deliver respective currents to different ones of the plurality of filaments.

Abstract: The invention discloses a wiggler used in synchrotron radiation sources and free electron lasers, where each pole is surrounded by at least two electromagnetic coils. The electromagnetic coils are energized with different amounts of current to provide a wide tunable range of the on-axis magnetic flux density, while preventing magnetic saturation of the poles.