Mechanism of Change in The Emission and Optical Properties of W and Mo After Bombardment with Low-Energy Ions
| Autor: | D.А. Tashmukhamedova, B.E. Umirzakov, Y.S. Ergashov, F.Y. Khudaykulov, Kh.E. Abdiev |
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| Jazyk: | English<br />Russian<br />Ukrainian |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | East European Journal of Physics, Iss 2, Pp 279-282 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2312-4334 2312-4539 |
| DOI: | 10.26565/2312-4334-2024-2-29 |
| Popis: | The paper reports the results of study of composition, emission, and optical properties of polycrystalline W and Mo samples implanted with Ba+ ions and coated with submonolayer Ba atoms by applying Auger electron spectroscopy, secondary electron emission coefficient s technique, as well as the photoelectron quantum yield Y. The experimental part was carried out by using the instrumentation and under vacuum Р ≈ 10-6 Pa. It is shown that during the implantation of Ba ions in the surface layers of refractory metals, a mechanical mixture of the W + Ba and Mo-Ba types is formed. It has been established that the values of the coefficient of secondary electron emission s and the quantum yield of photoelectrons Y at the same value of the work function еφ in the case of implantation of Ba+ ions are much larger than in the case of deposition of atoms. The obtained experimental results are substantiated by theoretical calculations. |
| Databáze: | Directory of Open Access Journals |
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