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| 005 | 20231030041915.0 | ||
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| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aRadiation of twisted photons from charged particles moving in cholesterics _fO. V. Bogdanov, P. O. Kazinsky, P. S. Korolev, G. Yu. Lazarenko |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: 65 tit.] | ||
| 330 | _aThe 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. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tJournal of Molecular Liquids | ||
| 463 |
_tVol. 326 _v[115278, 14 p.] _d2021 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 701 | 1 |
_aBogdanov _bO. V. _cphysicist _cassociate professor of Tomsk Polytechnic University _f1981- _gOleg Viktorovich _2stltpush _3(RuTPU)RU\TPU\pers\31518 |
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| 701 | 1 |
_aKazinsky _bP. O. _gPetr Olegovich |
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| 701 | 1 |
_aKorolev _bP. S. _gPetr Sergeevich |
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| 701 | 1 |
_aLazarenko _bG. Yu. _cPhysicist _cLaboratory assistant of Tomsk Polytechnic University _f1995- _gGeorge Yurievich _2stltpush _3(RuTPU)RU\TPU\pers\46279 |
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| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bШкола базовой инженерной подготовки _bОтделение математики и информатики _h8031 _2stltpush _3(RuTPU)RU\TPU\col\23555 |
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_aRU _b63413507 _c20210324 _gRCR |
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| 856 | 4 | _uhttps://doi.org/10.1016/j.molliq.2021.115278 | |
| 942 | _cCF | ||