TY - JOUR

T1 - Radiative recombination of twisted electrons with hydrogenlike heavy ions: Linear polarization of emitted photons

AU - Maiorova, Anna V.

AU - Peshkov, Anton A.

AU - Surzhykov, Andrey

N1 - Funding information: This work was funded by the Russian Science Foundation (Grant No. 20-62-46006). A.A.P. acknowledges support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy–EXC-2123 QuantumFrontiers–390837967.

PY - 2021/8

Y1 - 2021/8

N2 - We present a theoretical investigation of the radiative recombination of twisted Bessel electrons with initially hydrogen-like (finally helium-like) heavy ions. In our study, we focus especially on the linear polarization of x-ray photons emitted in the electron capture into the ground 1s1/22 ionic state. Particular emphasis is placed on the question of how this polarization is affected if incident hydrogen-like ions are themselves spin-polarized. To explore such a "polarization transfer"we apply the density matrix theory and derive the Stokes parameters of recombination x rays for the realistic case of collisions between macroscopic electron and ion beams. Based on the developed general approach two scenarios are discussed that are of interest for the planned experiments at ion storage rings. First, we demonstrate how the use of twisted electrons can empower the known method for the diagnostics of spin-polarized ion beams, based on the rotation of the linear polarization of recombination light. In the second scenario we show how the internal structure of ions beams with inhomogeneous intensity and spin patterns can be probed by the capture of Bessel electrons, carrying different values of angular momentum.

AB - We present a theoretical investigation of the radiative recombination of twisted Bessel electrons with initially hydrogen-like (finally helium-like) heavy ions. In our study, we focus especially on the linear polarization of x-ray photons emitted in the electron capture into the ground 1s1/22 ionic state. Particular emphasis is placed on the question of how this polarization is affected if incident hydrogen-like ions are themselves spin-polarized. To explore such a "polarization transfer"we apply the density matrix theory and derive the Stokes parameters of recombination x rays for the realistic case of collisions between macroscopic electron and ion beams. Based on the developed general approach two scenarios are discussed that are of interest for the planned experiments at ion storage rings. First, we demonstrate how the use of twisted electrons can empower the known method for the diagnostics of spin-polarized ion beams, based on the rotation of the linear polarization of recombination light. In the second scenario we show how the internal structure of ions beams with inhomogeneous intensity and spin patterns can be probed by the capture of Bessel electrons, carrying different values of angular momentum.

UR - http://www.scopus.com/inward/record.url?scp=85113760230&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.104.022821

DO - 10.1103/PhysRevA.104.022821

M3 - Article

AN - SCOPUS:85113760230

VL - 104

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 2

M1 - 022821

ER -