RF cavities for RF Transitions in Polarized H and D Atoms

Compact RF cavities are designed to generate a magnetic RF field that induces RF transitions between the spin states of hydrogen and deuterium atoms in sources of polarized ions. The cavities operate either at a frequency of ~380 MHz for polarized deuterium atoms or at a frequency of ~1480 MHz for polarized hydrogen atoms. In both cases, a single plane of particle polarization is provided. A uniform distribution of the magnetic RF field is formed with a minimal parasitic component transverse to the polarization plane. Options for the technical implementation of cavities are considered.