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Spectroscopy of the interaction of a low-energy electron beam with organic luminescent molecules

†  a, ‡  b
a Research Institute for Nuclear Problems Belarusian State University, Bobruiskaya 11, Minsk, 220030, Belarus
b Chuvash State University, Moskovskij pr. 15, Cheboksary, 428015, Russian Federation

We present a brief review of the results of spectroscopic studies of the interaction of a beam of low-energy monokinetic tunable-energy electrons with organic luminescent molecules. Data are presented on elastic scattering, the excitation of vibrational and electronic transitions, luminescence properties, and the formation of positive and negative ions for a number of molecules. It is shown that the passage of electrons through the gaseous and thin-film phases of organic samples is close in nature. For all processes, except the excitation of triplet transitions and the formation of negative ions, the dipole interaction prevails, even in the near-threshold region. The results of the conducted research will be useful for understanding the conversion of electron energy by organic molecules in electronics, where the direct study of elementary processes is very difficult, as well as in biology and plasma chemistry.

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Fulltext is also available at DOI: 10.3367/UFNe.2022.05.039197
Keywords: organic molecules, excitation, electrons, luminescence, ionization, energy loss spectra
PACS: 33.15.Ta, 33.50.Dq, 34.50.Bw, 34.50.Gb (all)
DOI: 10.3367/UFNe.2022.05.039197
URL: https://ufn.ru/en/articles/2023/2/c/
001097218300003
2-s2.0-85182911987
2023PhyU...66..173K
Citation: Kukhta A V, Kazakov S M "Spectroscopy of the interaction of a low-energy electron beam with organic luminescent molecules" Phys. Usp. 66 173–181 (2023)
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Received: 28th, March 2022, revised: 19th, April 2022, 28th, May 2022

Оригинал: Кухто А В, Казаков С М «Спектроскопия взаимодействия пучка низкоэнергетических электронов с органическими люминесцирующими молекулами» УФН 193 182–191 (2023); DOI: 10.3367/UFNr.2022.05.039197

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