Angular momentum dynamics of vortex particles in accelerators
arXiv:2507.08763 · doi:10.1103/gsrz-cscl
Abstract
While conventional experiments typically employ plane-wave states of particles with definite momenta, vortex states represent cylindrical waves carrying an orbital angular momentum (OAM) projection along the propagation direction. This projection can be arbitrarily large, granting charged particles magnetic moments orders of magnitude greater than those of plane-wave states. Consequently, vortex beams could complement or replace spin-polarized beams in high-energy collisions, accessing observables beyond the reach of conventional experiments. We investigate the radiative and non-radiative OAM dynamics for relativistic vortex particles in accelerators. Our results show that the timescale for OAM loss via photon emission significantly exceeds typical acceleration times. Non-radiative OAM dynamics is governed by precession at a frequency distinct from that of spin. Similar to spin tunes, this induces resonances that can disrupt OAM at much lower energies than for spin-polarized beams. Thus, we propose using linacs for acceleration of the vortex beams, while Siberian snakes can be adapted for OAM manipulations.
10 pages, 3 figures
References in corpus (37)
- Theory and applications of free-electron vortex states
- Spatio-temporal vortex beams and angular momentum
- Relativistic Electron Vortex Beams: Angular Momentum and Spin-Orbit Interaction
- Magnetic monopole field exposed by electrons
- Highly coherent electron beam from a laser-triggered tungsten needle tip
- Modern and Future Colliders
- Observation of the Larmor and Gouy Rotations with Electron Vortex Beams
- Atomic scale electron vortices for nanoresearch
- Realization of electron vortices with large orbital angular momentum using miniature holograms fabricated by electron beam lithography
- Light emission is fundamentally tied to the quantum coherence of the emitting particle
- Quantum electron self-interaction in a strong laser field
- Elastic scattering of vortex electrons provides direct access to the Coulomb phase
- Scattering of wave packets with phases
- Measuring the phase of the scattering amplitude with vortex beams
- Relativistic spin operators in various electromagnetic environments
- Probability of radiation of twisted photons by classical currents
- Relativistic quantum dynamics of twisted electron beams in arbitrary electric and magnetic fields
- Doing spin physics with unpolarized particles
- Manipulating twisted electron beams
- Relativistic vortex electrons: paraxial versus non-paraxial regimes
- Spin-Orbit States of Neutron Wavepackets
- Generation of polarized particle beams at relativistic laser intensities
- Parallel axis theorem for free-space electron wavefunctions
- Spatial coherence of electron beams from field emitters and its effect on the resolution of imaged objects
- Shifting physics of vortex particles to higher energies via quantum entanglement
- Elastic scattering of twisted neutrons by nuclei
- Effects of the transverse coherence length in relativistic collisions
- Generation of electron vortices using non-exact electric fields
- Twisted particle collisions: a new tool for spin physics
- Strong signature of one-loop self-energy in polarization resolved nonlinear Compton scattering
- Siberian snake-like behavior for an orbital polarization of a beam of twisted (vortex) electrons
- Emission of twisted photons by a scalar charged particle in a strong magnetic field
- Emission of twisted photons by a Dirac electron in a strong magnetic field
- Attosecond physics hidden in Cherenkov radiation
- Inclusive probability to record an electron in elastic electromagnetic scattering by a spin one-half hadron wave packet
- Diffraction by Circular and Triangular Apertures as a Diagnostic Tool of Twisted Matter Waves
- Plasmon-polaritons on a single electron