Luminescence and Laser Physics: XVII International Conference on Luminescence and Laser Physics

Electron-phonon interaction of color centers in MgF2 and LiF-O,OH crystals MgF2和LiF-O,OH晶体中色中心的电子-声子相互作用

Luminescence and Laser Physics: XVII International Conference on Luminescence and Laser Physics – LLPh 2019 Pub Date : 2021-07-27 DOI: 10.1063/5.0061805

L. I. Shchepina, R. Shendrik, T. S. Lasareva, N. Ivanov

引用次数: 0

Luminescence of zircons from highly diamondiferous kimberlites of Yakutia 雅库特高钻石金伯利岩中锆石的发光

Luminescence and Laser Physics: XVII International Conference on Luminescence and Laser Physics – LLPh 2019 Pub Date : 2021-07-27 DOI: 10.1063/5.0061968

V. Mironov, A. Tyutrin, B. Danilov, E. F. Martynovich

{"title":"Luminescence of zircons from highly diamondiferous kimberlites of Yakutia","authors":"V. Mironov, A. Tyutrin, B. Danilov, E. F. Martynovich","doi":"10.1063/5.0061968","DOIUrl":"https://doi.org/10.1063/5.0061968","url":null,"abstract":"This paper presents the results of studies of X-ray luminescence (XL) of zircons from three highly diamondiferous kimberlite pipes in Yakutia (Russia). Those zircons acquired the typical rounded shape as a result of ancient mechanical abrasion or dissolution. The photoluminescence (PL) color of zircons varies from blue-green to yellow-orange. The PL spectra contain from one to three structureless bands. The color saturation of samples depends on the source and increases in the sequence Mir – Udachnaya – Nyurbinskaya pipes. The system of peaks at 480 and 580 nm, characteristic of rare earth elements, were observed in all X-ray luminescence spectra. The relative intensity of luminescence of the 380 nm band in XL spectrum decreases with increasing color saturation and increases with the lightening of crystals during annealing. The intensity of the 450–650 nm band with a maximum at 540 nm changes slightly during annealing up to 500°C. Zircons are colored under influence of X-ray radiation – at least two types of absorbing defects (color centers) are formed, the concentration of the color centers linearly depends on the irradiation dose. The similarities and differences between zircons from the main industrial kimberlite diamond deposits of Yakutia are shown.","PeriodicalId":296561,"journal":{"name":"Luminescence and Laser Physics: XVII International Conference on Luminescence and Laser Physics – LLPh 2019","volume":"549 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124002876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear susceptibility in crystals induced by femtosecond laser radiation 飞秒激光辐射诱导晶体的非线性磁化率

Luminescence and Laser Physics: XVII International Conference on Luminescence and Laser Physics – LLPh 2019 Pub Date : 2021-07-27 DOI: 10.1063/5.0062977

V. Baryshnikov, O. Goreva

引用次数: 0

Luminescent properties of nanoparticles created by laser ablation of natural diamond single crystals 激光烧蚀天然金刚石单晶制备纳米粒子的发光特性

Luminescence and Laser Physics: XVII International Conference on Luminescence and Laser Physics – LLPh 2019 Pub Date : 2021-07-27 DOI: 10.1063/5.0061957

E. F. Martynovich, E. A. Ludina, N. Lazareva, N. V. Bryanskiy, A. L. Rakevich, A. D. Ermoshenko

{"title":"Luminescent properties of nanoparticles created by laser ablation of natural diamond single crystals","authors":"E. F. Martynovich, E. A. Ludina, N. Lazareva, N. V. Bryanskiy, A. L. Rakevich, A. D. Ermoshenko","doi":"10.1063/5.0061957","DOIUrl":"https://doi.org/10.1063/5.0061957","url":null,"abstract":"The formation of particles during ablation of single crystals of natural diamond by laser radiation with a wavelength of 213 nm was studied. As a result of ablation, diamond particles of two characteristic sizes are formed. The linear size of large particles was on the order of 1 µm, small particles – from 300–400 nm and less. The spectra and kinetics of luminescence of the original crystal and the resulting nanoparticles were recorded. Measurements showed that the spectra of nano- and microparticles are radically different from the spectra of the original single crystals. The luminescence of nanoparticles did not manifest the characteristic structure of spectra and the corresponding decay time constants of luminescence of N3 and H3 color centers observed in the original single crystals. Instead, a broad complex luminescence band with several different decay time constants was observed. It was found that this luminescence is caused by the products of graphitization of the surface of nano- and microparticles, as well as the surface of a crater formed on a diamond single crystal as a result of ablation. The absorption of optical radiation that excited luminescence in the experimental studies of particles and craters was so strong that the luminescence of the main diamond composition of nanoparticles and a diamond crystal under the graphitized layer was not detected in experiments.","PeriodicalId":296561,"journal":{"name":"Luminescence and Laser Physics: XVII International Conference on Luminescence and Laser Physics – LLPh 2019","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125803090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

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