dc.contributor.author | Akilbekov, Abdirash | |
dc.contributor.author | Kiryakov, Arseny | |
dc.contributor.author | Baubekova, Guldar | |
dc.contributor.author | Aralbayeva, Gulnara | |
dc.contributor.author | Dauletbekova, Alma | |
dc.contributor.author | Akylbekova, Aiman | |
dc.contributor.author | Ospanova, Zhulduz | |
dc.contributor.author | Popov, Anatoli I. | |
dc.date.accessioned | 2024-02-09T11:57:58Z | |
dc.date.available | 2024-02-09T11:57:58Z | |
dc.date.issued | 2023 | |
dc.identifier.issn | 1996-1944 | |
dc.identifier.uri | https://www.mdpi.com/1996-1944/16/19/6414 | |
dc.identifier.uri | https://dspace.lu.lv/dspace/handle/7/65403 | |
dc.description | The work was carried out within the framework of the grant project AR09259669 of the Ministry of Higher Education and Science of the Republic of Kazakhstan. A.K. thanks the Center for Collective Use Geoanalyst IGG Ural Branch RAS for obtaining Raman spectra of the surface layer. A.I.P. is also thankful for financial support from the Latvian Project ZP-2018/1-0214. In addition, A.I.P. is also thankful for financial support from the Latvian Project LZP-2018/1-0214. In addition, A.I.P. thanks the Institute of Solid State Physics, University of Latvia (ISSP UL). ISSP UL as the Centre of Excellence has received funding from the European Union’s Horizon 2020 Framework Program H2020-WIDESPREAD01-2016-2017-Teaming Phase2 under grant agreement No. 739508, project CAMART2. | en_US |
dc.description.abstract | In In this study, the optical properties of magnesium-aluminate spinel were examined after being irradiated with 220 MeV Xe ions. The research aimed to simulate the impact of nuclear fuel fission fragments on the material. The following measurements were taken during the experiments: transmission spectra in the IR region (190–7000) nm, optical absorption spectra in the range (1.2–6.5) eV, and Raman spectra were measured along the depth of ion penetration from the surface to 30 µm. A peak with a broad shape at approximately 5.3 eV can be observed in the optical absorption spectrum of irradiated spinel crystals. This band is linked to the electronic color centers of F+ and F. Meanwhile, the band with a maximum at ~(3–4) eV is attributed to hole color centers. Apart from the typical Raman modes of an unirradiated crystal, additional modes, A1g* (720 cm−1), and Eg* (385 cm−1), manifested mainly as an asymmetric shoulder of the main Eg mode, are also observed. In addition, the Raman spectroscopy method showed that the greatest disordering of crystallinity occurs in the near-surface layer up to 4 μm thick. At the same time, Raman scattering spectroscopy is sensitive to structural changes almost up to the simulated value of the modified layer, which is an excellent express method for certifying the structural properties of crystals modified by swift heavy ions. --//-- This is an open access article Akilbekov, A.; Kiryakov, A.; Baubekova, G.; Aralbayeva, G.; Dauletbekova, A.; Akylbekova, A.; Ospanova, Z.; Popov, A.I. Optical Characteristics of MgAl2O4 Single Crystals Irradiated by 220 MeV Xe Ions. Materials 2023, 16, 6414. https://doi.org/10.3390/ma16196414 published under the CC BY 4.0 licence. | en_US |
dc.description.sponsorship | Ministry of Higher Education and Science of the Republic of Kazakhstan grant project AR09259669; Latvian Project ZP-2018/1-0214; the Institute of Solid State Physics, University of Latvia (ISSP UL). ISSP UL as the Centre of Excellence has received funding from the European Union’s Horizon 2020 Framework Program H2020-WIDESPREAD01-2016-2017-Teaming Phase2 under grant agreement No. 739508, project CAMART2. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | MDPI | en_US |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/739508/EU/Centre of Advanced Material Research and Technology Transfer/CAMART² | en_US |
dc.relation.ispartofseries | Materials;16, 6414 | |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Research Subject Categories::NATURAL SCIENCES::Physics | en_US |
dc.subject | single crystals MgAl2O4 | en_US |
dc.subject | absorption spectra | en_US |
dc.subject | swift heavy ions | en_US |
dc.subject | radiation defects | en_US |
dc.subject | Raman spectra | en_US |
dc.title | Optical Characteristics of MgAl2O4 Single Crystals Irradiated by 220 MeV Xe Ions | en_US |
dc.type | info:eu-repo/semantics/article | en_US |
dc.identifier.doi | 10.3390/ma16196414 | |