TY - JOUR

T1 - Resonant Scattering of Plane-Wave and Twisted Photons at the Gamma Factory

AU - Serbo, Valeriy G.

AU - Surzhykov, Andrey

AU - Volotka, Andrey

N1 - Funding Information: The authors are very grateful to D. Karlovets, N. Muchnoi, M. W. Krasny, and D. Budker for many fruitful discussions. This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy EXC‐2123, QuantumFrontiers 390837967. A.V. acknowledges financial support by the Government of the Russian Federation through the ITMO Fellowship and Professorship Program. Some work in Section 5 is supported by the Russian Science Foundation (Project No. 21‐42‐04412) and by the Deutsche Forschungsgemeinschaft (Project No. SU 658/5‐1)

PY - 2022/3/8

Y1 - 2022/3/8

N2 - A theoretical investigation of the resonant elastic scattering of laser photons by ultra-relativistic partially stripped ions, that is the core process of the Gamma Factory project, is presented. Special emphasis in the study is placed on the angular distribution and polarization of scattered photons as observed in the collider and ion-rest reference frames. In order to describe these (angular and polarization) properties for arbitrary relativistic many-electron ion, the general approach, based on the application of irreducible polarization tensors, is laid down. By making use of the polarization tensors, the scattering of both conventional plane-wave- and twisted (or vortex) photons is explored in detail. For the former case, it is shown how the propagation directions and polarization states of incident and outgoing photons are related to each other for the (Formula presented.), (Formula presented.), and (Formula presented.) resonant transitions. For the scattering of initially twisted light that carries non-zero orbital angular momentum, the angular distribution of secondary photons is explored and the conditions under which they are also twisted are discussed.

AB - A theoretical investigation of the resonant elastic scattering of laser photons by ultra-relativistic partially stripped ions, that is the core process of the Gamma Factory project, is presented. Special emphasis in the study is placed on the angular distribution and polarization of scattered photons as observed in the collider and ion-rest reference frames. In order to describe these (angular and polarization) properties for arbitrary relativistic many-electron ion, the general approach, based on the application of irreducible polarization tensors, is laid down. By making use of the polarization tensors, the scattering of both conventional plane-wave- and twisted (or vortex) photons is explored in detail. For the former case, it is shown how the propagation directions and polarization states of incident and outgoing photons are related to each other for the (Formula presented.), (Formula presented.), and (Formula presented.) resonant transitions. For the scattering of initially twisted light that carries non-zero orbital angular momentum, the angular distribution of secondary photons is explored and the conditions under which they are also twisted are discussed.

KW - angular distribution and polarization

KW - gamma factory

KW - relativistic ion-photon collisions

KW - resonant elastic photon scattering

KW - twisted photons

UR - http://www.scopus.com/inward/record.url?scp=85115038858&partnerID=8YFLogxK

U2 - 10.1002/andp.202100199

DO - 10.1002/andp.202100199

M3 - Article

AN - SCOPUS:85115038858

VL - 534

JO - Annalen der Physik

JF - Annalen der Physik

SN - 0003-3804

IS - 3

M1 - 2100199

ER -