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Träfflista för sökning "WFRF:(Hjelm B.) srt2:(2000-2004)"

Sökning: WFRF:(Hjelm B.) > (2000-2004)

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1.
  • Habenicht, Anja, et al. (författare)
  • Two-photon excitation and time-resolved fluorescence: I. The proper response function for analysing single-photon counting experiments
  • 2002
  • Ingår i: Chemical Physics Letters. ; 354:5-6, s. 367-75
  • Tidskriftsartikel (refereegranskat)abstract
    • An accurate instrumental response function is needed to deconvolute fluorescence data obtained by time-correlated single-photon counting (TCSPC) upon multi-photon excitation. Hitherto the response function was obtained by measuring Rayleigh scattering (RS) from colloidal solutions, as is also used in one-photon excited fluorescence. We show that hyper Rayleigh scattering (HRS) provides a better choice for deconvolution of fluorescence decays, as obtained by TCSPC and two-photon excitation (TPE). The one- and two-photon response functions were monitored as RS and HRS from colloidal gold particles at 800 and 400 nm, respectively.
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4.
  • Nilsson, Hans-Erik, et al. (författare)
  • Full band Monte Carlo simulation-beyond the semiclassical approach
  • 2004
  • Ingår i: Monte Carlo Methods and Applications. - : Walter de Gruyter GmbH. - 0929-9629 .- 1569-3961. ; 10:3-4, s. 481-490
  • Tidskriftsartikel (refereegranskat)abstract
    • A quantum mechanical extension of the full band ensemble Monte Carlo (MC) simulation method is presented. The new approach goes beyond the traditional semi-classical method generally used in MC simulations of charge transport in semiconductor materials and devices. The extension is necessary in high-field simulations of semiconductor materials with a complex unit cell, such as the hexagonal SiC polytypes or wurtzite GaN. Instead of complex unit cells the approach can also be used for super-cells, in order to understand charge transport at surfaces, around point defects, or in quantum wells.
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