a cylindrical waveguide. The spectrum contains sharp resonances correlated to the particle’s
OAM, offering a novel spectroscopy method for OAM of charged particles. OCIS codes: (270.5580)
Quantum electrodynamics; (260.6042) Singular optics; (350.5610) … Here, we study the
Čerenkov radiation emitted from a charged particle, that carries well defined OAM, and
travels within a cylindrical waveguide with refractive index 𝑛𝑛 and metallic cladding. We …