Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/75480
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dc.contributor.authorKozlov, A. V.en
dc.contributor.authorPustovarov, V. A.en
dc.date.accessioned2019-07-22T06:46:27Z-
dc.date.available2019-07-22T06:46:27Z-
dc.date.issued2018-
dc.identifier.citationKozlov A. V. Host and defect-related luminescence in Rb 2 KTiOF 5 oxyfluoride crystals irradiated by fast electrons / A. V. Kozlov, V. A. Pustovarov // Journal of Physics: Conference Series. — 2018. — Vol. 1115. — Iss. 5. — 52006.en
dc.identifier.issn1742-6588-
dc.identifier.otherhttps://iopscience.iop.org/article/10.1088/1742-6596/1115/5/052006/pdfpdf
dc.identifier.other1good_DOI
dc.identifier.other29f364ef-e89f-47fd-a9d3-98b5c4542851pure_uuid
dc.identifier.otherhttp://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=85058241786m
dc.identifier.urihttp://hdl.handle.net/10995/75480-
dc.description.abstractThe paper presents a comparative analysis of RKTF crystals (full name single crystals Rb 2 KTiOF 5 ), and RKTF + e crystals, single crystals irradiated on a cyclotron by fast electrons Rb 2 KTiOF 5 . The crystals were grown by slow solidification method. The study was conducted at a temperature from 7 to 400 K for various types of optical and radiation effects. Spectra of photoluminescence (PL) and X-ray excited luminescence (XRL) in region of 1.5-5.5 eV, time-resolved pulse cathode-luminescence (PCL) spectra, the temperature depending of the XRL, luminescence decay kinetics were studied. Single crystal RKTF are transparent from microwave up to the edge of the long-wave fundamental absorption (near UV range). We detected three luminescence bands for RKTF, in the visible spectral region, that were attributed to radiative annihilation of intrinsic excitons (2.25 eV), recombinaion-type luminescence (2.1 eV) and luminescence of higher TiOF 5 complexes (1.9 eV), for all emission bands characterized by great (∼1.5-1.8 eV) Stokes shift. The exponential component with lifetime of approximately 19 μs was found in the PCL decay kinetics at 2.25 eV. In the crystal RKTF + e we detected new luminescence bands 2.6 eV and 3.2 eV and the disappearance of the RKTF luminescence bands. Stokes shift of the band 3.2 eV of the RKTF + e crystal is much smaller and is equal to 0.7 eV. Excitation of the band 3.2 eV occurs in the field of crystal transparency, which indicates the defective nature of the glow. PCL decay kinetics at 2.0 and 2.5 eV has a complex nature and consists of at least two components with a life time of 0.5 ms and 6 ms, that significantly more in comparison with RKTF. Irradiation by fast electrons of crystals Rb 2 KTiOF 5 led to entirely new optical properties and suppression of self-luminescence of the crystals. © Published under licence by IOP Publishing Ltd.en
dc.description.sponsorshipThis work has been partially supported by the Ministry of Education and Science of the Russian Federation – basic part of the government mandate (project No. 3.8302.2017/8.9) and Act 211 Government of the Russian Federation (contract No. 02.A03.21.0006, the Center of Excellence “Radiation and Nuclear Technologies”) and COST Action TD1401 "FAST”. The authors thank to Dr. S. Omelkov (University of Tartu, Estonia) for help in PCL experiments and M. Sarychev (UrFU) for support in low temperature measurements.en
dc.format.mimetypeapplication/pdfen
dc.language.isoenen
dc.publisherInstitute of Physics Publishingen
dc.rightsinfo:eu-repo/semantics/openAccessen
dc.sourceJournal of Physics: Conference Seriesen
dc.subjectDEFECTSen
dc.subjectKINETICSen
dc.subjectLUMINESCENCEen
dc.subjectOPTICAL PROPERTIESen
dc.subjectRADIATION EFFECTSen
dc.subjectRUBIDIUM COMPOUNDSen
dc.subjectTITANIUM COMPOUNDSen
dc.subjectCATHODE LUMINESCENCEen
dc.subjectCOMPARATIVE ANALYSISen
dc.subjectEXPONENTIAL COMPONENTSen
dc.subjectLUMINESCENCE BANDen
dc.subjectLUMINESCENCE DECAY KINETICSen
dc.subjectRADIATIVE ANNIHILATIONen
dc.subjectVISIBLE SPECTRAL REGIONSen
dc.subjectX RAY EXCITED LUMINESCENCEen
dc.subjectSINGLE CRYSTALSen
dc.titleHost and defect-related luminescence in Rb 2 KTiOF 5 oxyfluoride crystals irradiated by fast electronsen
dc.typeConference Paperen
dc.typeinfo:eu-repo/semantics/conferenceObjecten
dc.typeinfo:eu-repo/semantics/publishedVersionen
dc.conference.name6th International Congress on Energy Fluxes and Radiation Effects 2018, EFRE 2018en
dc.conference.date16 September 2018 through 22 September 2018-
dc.identifier.rsi38639298-
dc.identifier.doi10.1088/1742-6596/1115/5/052006-
dc.identifier.scopus85058241786-
local.affiliationInstitute of Physics and Technology, Ural Federal University, 19 Mira Str., Yekaterinburg, 620002, Russian Federationen
local.contributor.employeeКозлов Артем Владимировичru
local.contributor.employeeПустоваров Владимир Алексеевичru
local.issue5-
local.volume1115-
dc.identifier.wos000546577800210-
local.identifier.pure8424201-
local.description.order52006-
local.identifier.eid2-s2.0-85058241786-
local.identifier.wosWOS:000546577800210-
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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