Radially polarized terahertz vorticity induced by twisted Azimuthal Wiggler magnetic field Bahareh Alsadat Ebrahimipour, Hassan Sobhani, Mehdi Zamani and Hadi Noori Eur. Phys. J. Plus, 137 7 (2022) 873 Published online: 29 July 2022 DOI: 10.1140/epjp/s13360-022-03011-z