On the mechanisms of formation of excited yttrium atoms under ion bombardment of yttrium and yttrium-aluminum garnet
| Autor: | I.A. Afanas'eva, I.S. Zelenina, D.I. Shevchenko, V.V. Bobkov, V.V. Gritsyna, I.I. Okseniuk |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
education.field_of_study Materials science Population Yttrium iron garnet chemistry.chemical_element 02 engineering and technology Yttrium 021001 nanoscience & nanotechnology Condensed Matter Physics Kinetic energy 01 natural sciences Surfaces Coatings and Films Ion Condensed Matter::Materials Science chemistry.chemical_compound chemistry Excited state 0103 physical sciences Molecule Emission spectrum Atomic physics 0210 nano-technology education Instrumentation |
| Zdroj: | Vacuum. 129:148-152 |
| ISSN: | 0042-207X |
| DOI: | 10.1016/j.vacuum.2016.03.014 |
| Popis: | A comparison of the emission spectra of excited yttrium atoms ejected from the surface of the metal yttrium and yttrium-aluminum garnet (YAG) by Ar + ions with energy 20 keV to the emission spectra of excited yttrium atoms ejected from the surface of metal yttrium by Xe + ions with energy 40 keV has been made. A sharp increase of population states of yttrium atoms with low energy excitation ( z 2 D°, z 4 F°) ejected both from metallic yttrium and YAG under Ar + bombardment was established when compared with the metallic yttrium bombarded Xe + ions. The spatial distribution of radiation of excited yttrium atoms ejected from yttrium and YAG by Ar + ions was measured. It showed that the yttrium atoms in the excited states z 2 G° and z 4 F° have low kinetic energy (order eV), whereas the yttrium atoms in other states have kinetic energy of order 100–300 eV and also more than 4 keV. It was proposed that, in addition to formation by a collision mechanism, there are low excited yttrium atoms due the break-up of yttrium oxide molecules in unstable electron states of excited yttrium and oxygen atoms. |
| Databáze: | OpenAIRE |
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