Speaker
Description
In [1], a study was conducted of spontaneous radiation arising from the channeling of weakly relativistic electrons in the principal planes of complex tetrafluoroaluminate crystals.
This paper continues the investigation of the spectral distribution features of spontaneous radiation in other complex crystals (in particular, radiation arising from the channeling of relativistic electrons in the planes (100), (110), and (111) in fluorite crystals CaF₂, SrF₂, BaF₂, with the structure shown in Fig. a). Using the interaction potentials of electrons with these main planes calculated in [2, 3], the spectral distributions of spontaneous emission for beams of relativistic electrons with different angular dispersions are investigated. In Fig. b, the curves 1, 2, 3 correspond to the potentials in CaF₂, SrF₂, BaF₂ crystals in the (100) planes, the curves 1′, 2′, 3′ , respectively, in the (110) planes, and in the Fig. c with the curves 1, 2, 3, the potentials in the (111) planes are designated.
As a result of these studies, it was shown that, as in the case of tetrafluoroaluminate crystals (see [1]), a sufficiently intense short-wave radiation arises. This is explained by the arrangement of the quantum levels of the transverse energy in potential wells (in Fig. с for the CaF₂ crystal, the system of these levels is shown at a Lorentz-factor of 50). In addition, these distributions strongly depend on the angular dispersions of the channeled electrons, and they are also significantly affected by the temperature factor. These results are presented in detail in our report.
References
[1] N.V. Maksyuta, V.I. Vysotskii, A.O. Stakhova, Yu.A. Slinchenko. Study of spontaneous shortwave radiation during channeling of weakly relativistic electrons in the main crystallographic planes of tetrafluoroaluminates, Nucl. Instr. and Meth. in Phys. Res. A 1075 (2025) 170419.
[2] M.V. Maksyuta, A.O. Stakhova, V.I. Vysotskii, S.V. Efimenko. Book of proceedings of The 20th Int. Conf. on Electronics and applied physics, Taras Shevchenko National University of Kyiv, Fa Faculty of RadioPhysics, Electronics and Computer Systems, October 20 – 25, 2024, Kyiv (Ukraine), pp. 54 – 55.
[3] M.V. Maksyuta, A.O. Stakhova, V.I. Vysotskii, S.V. Efimenko. Book of proceedings of the XXV Int. young scientists conf. of applied physics, Taras Shevchenko National University of Kyiv, Faculty of RadioPhysics, Electronics and Computer Systems, May, 20 – 23, 2025, Kyiv, Ukraine, pp. 58 – 59. Kyiv (Ukraine), pp. 58 – 59.
