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Sökning: WFRF:(Jonsson Fredrik 1976)

  • Resultat 1-6 av 6
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1.
  • Hedén, Martin, 1976, et al. (författare)
  • Thermal radiation from CN+ and La@CN
  • 2005
  • Ingår i: J. Chem. Phys.. - : AIP Publishing. - 0021-9606. ; 123
  • Tidskriftsartikel (refereegranskat)abstract
    • The radiative cooling of positively charged fullerene and endohedral fullerene fragments of C60, C70, C84, and La@C82 has been measured in a time-of-flight mass spectrometer. The radiative cooling is measured via its influence on the metastable decay. The emissivity extracted from the data is between 4×10–4 and 13×10–4. These values agree fairly well with the emissivity calculated from considering the low-energy tail of the surface plasmon. No major difference is found in the emission behavior of empty and endohedral fullerenes.
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  • Holmberg, Tora, 1967-, et al. (författare)
  • Introduction : Why death matters
  • 2019
  • Ingår i: Death matters. - Cham, Switzerland : Palgrave Macmillan. - 9783030114848 ; , s. 1-21
  • Bokkapitel (refereegranskat)
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4.
  • Kjellberg, Mikael, 1980, et al. (författare)
  • Momentum map imaging photoelectron spectroscopy of fullerenes with femtosecond laser pulses
  • 2010
  • Ingår i: Physical Review A. - 1050-2947. ; 81:2
  • Tidskriftsartikel (refereegranskat)abstract
    • Photoelectron spectra of C60 and C70, ionized with ultrashort laser pulses, are measured with a momentum-map-imaging electron spectrometer. Above the photon energy, 1.6 eV, the spectra are essentially structureless and well described by Boltzmann distributions, with temperatures on the order of 104 K. This result is similar to previous results for C60 using a time-of-flight electron spectrometer, which are confirmed in this study. Comparisons of electron energy distributions recorded for identical laser intensities but for different pulse durations demonstrate unambiguously that a significant fraction of the electrons are emitted in quasithermal processes and results argue strongly against a field ionization or direct multiphoton ionization mechanism. For electron energies above the photon energy, which account for about half the intensity, the whole signal is consistent with this quasithermal emission.
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5.
  • Lindberg, Fredrik, 1974, et al. (författare)
  • Urban Multi-scale Environmental Predictor (UMEP): An integrated tool for city-based climate services
  • 2018
  • Ingår i: Environmental Modelling and Software. - : Elsevier BV. - 1364-8152. ; 99, s. 70-87
  • Tidskriftsartikel (refereegranskat)abstract
    • © 2017 The Authors UMEP (Urban Multi-scale Environmental Predictor), a city-based climate service tool, combines models and tools essential for climate simulations. Applications are presented to illustrate UMEP's potential in the identification of heat waves and cold waves; the impact of green infrastructure on runoff; the effects of buildings on human thermal stress; solar energy production; and the impact of human activities on heat emissions. UMEP has broad utility for applications related to outdoor thermal comfort, wind, urban energy consumption and climate change mitigation. It includes tools to enable users to input atmospheric and surface data from multiple sources, to characterise the urban environment, to prepare meteorological data for use in cities, to undertake simulations and consider scenarios, and to compare and visualise different combinations of climate indicators. An open-source tool, UMEP is designed to be easily updated as new data and tools are developed, and to be accessible to researchers, decision-makers and practitioners.
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  • Resultat 1-6 av 6

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