Radiation of twisted photons from charged particles moving in cholesterics

Radiation of twisted photons from charged particles moving in cholesterics

Xehetasun bibliografikoak
Parent link:Journal of Molecular Liquids
Vol. 326.— 2021.— [115278, 14 p.]
Erakunde egilea: Национальный исследовательский Томский политехнический университет Школа базовой инженерной подготовки Отделение математики и информатики
Beste egile batzuk: Bogdanov O. V. Oleg Viktorovich, Kazinsky P. O. Petr Olegovich, Korolev P. S. Petr Sergeevich, Lazarenko G. Yu. George Yurievich
Gaia:Title screen
The radiation of twisted photons by charged particles traversing a cholesteric plate is studied in the framework of quantum electrodynamics in an anisotropic inhomogeneous dispersive medium. The complete set of solutions to the Maxwell equations in the cholesteric plate is constructed in the paraxial and small anisotropy approximations. The explicit expressions for the average numbers of plane-wave and twisted photons created by a charged point particle crossing the cholesteric plate are derived. The selection rules for the twisted photons radiated at the harmonic n ∈ ℤ are established. In the paraxial regime, the projection of the orbital angular momentum of a radiated twisted photon obeys the selection rule l = ± (2n + 1). In the approximation of a small anisotropy of the permittivity tensor, the selection rule becomes m = ± 2n, where m is the projection of the total angular momentum of a radiated twisted photon. The sign “±” in these selection rules is related to the choice of the forward or reflected waves in the cholesteric and is realized at the different energies of radiated photons. As the examples, the radiation of optical twisted photons by electrons with the Lorentz factors γ = 235 and γ = 500 and by uranium nuclei with γ = 2 are considered. It is shown that charged particles traversing normally a cholesteric plate can be used as a pure source of twisted photons. These results can be employed for elaboration of compact flexible sources of twisted photons, new particle detectors, and for diagnostics of the structure of liquid crystals.
Режим доступа: по договору с организацией-держателем ресурса
Argitaratua: 2021
Gaiak:
электронный ресурс
труды учёных ТПУ
Sarrera elektronikoa:https://doi.org/10.1016/j.molliq.2021.115278
Formatua: Baliabide elektronikoa Liburu kapitulua
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664019

Antzeko izenburuak

Antzeko izenburuak