Results 1 to 10 of about 3,444 (167)
InGaN-LD-Pumped
IEEE Photonics Journal, 2014 We demonstrate the first InGaN-LD-pumped room temperature and continuous-wave laser operation of a Pr3+: LiYF4 crystal at 915 nm. A maximum output power up to 78 mW with a laser slope efficiency of about 17% is obtained. The round-trip optical losses are
Biao Qu +9 more
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Numerical study of different methods applied to the one-dimensional transient heat equation
REMAT, 2021 This article aims to compare the results obtained by applying three numerical methods: Explicit Euler, Crank-Nicolson,and Multi-stage (R11), in the one-dimensional heat diffusion transient equation with different initial and boundary conditions.
Neyva Romeiro +4 more
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IEEE Access, 2023 In this paper, a new method for automatically analyzing and classifying books and book collections according to the subjects they cover is presented. It is based on a combination of the LDA method for discovering latent topics in the collection, on the ...
Nikolaos Makris, Nikolaos Mitrou
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Pr@C82 Metallofullerene: Calculated Isomeric Populations
Inorganics, 2023 Relative equilibrium populations of the five lowest-energy isolated-pentagon-rule (IPR) isomeric structures of Pr@C82 under high-temperature fullerene synthesis conditions were calculated with the Gibbs energy terms based on molecular characteristics ...
Zdeněk Slanina +4 more
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Magnetic, Electric and Optical Properties of Ion Doped CuCr2O4 Nanoparticles
Magnetochemistry, 2022 The magnetic, electric and optical properties of pure and ion doped CuCr2O4 - bulk and nanoparticles are investigated theoretically. The magnetization Ms and the band gap Eg decrease with increasing particle size. By Co ion doping Ms and the polarization
Angel Todorov Apostolov +2 more
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Magnetochemistry, 2022 It is well recognized that intermetallics based on rare-earth (R) and transition metals (T) display numerous interesting magnetic properties, leading to potential applications in different fields. The latest progress regarding magnetic properties and the
Riadh Fersi, Najeh Mliki, Lotfi Bessais
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Absence of mixed valency for Pr in pristine and hole-doped
Physical Review B, 2023 12 pages, 13 ...
Xingyu Liao +2 more
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Support and density of the limit $m$-ary search trees distribution [PDF]
Discrete Mathematics & Theoretical Computer Science, 2012 The space requirements of an $m$-ary search tree satisfies a well-known phase transition: when $m\leq 26$, the second order asymptotics is Gaussian. When $m\geq 27$, it is not Gaussian any longer and a limit $W$ of a complex-valued martingale arises.
Brigitte Chauvin +2 more
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Numerical Study of Liquid Metal Turbulent Heat Transfer in Cross-Flow Tube Banks
Energies, 2022 Heavy liquid metals (HLM) are attractive coolants for nuclear fission and fusion applications due to their excellent thermal properties. In these reactors, a high coolant flow rate must be processed in compact heat exchangers, and as such, it may be ...
Alessandro Tassone +3 more
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Site-selective spectroscopy of Pr3+ ions in sodium [MATH]-alumina crystals [PDF]
Le Journal de Physique IV, 1994 We report on the results of a low-temperature optical spectroscopy study of Pr3+-exchanged sodium β-alumina single crystals (Na+/Pr3+ β-Al2O3), containing different amounts of luminescent ions, in which excitation and fluorescence spectra have been carried out in σ and π polarization. The 3P0 → 3H4 emission spectra, obtained under broad band excitation,
Mariotto +7 more
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