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Träfflista för sökning "WFRF:(Nilsson Lennart J.) srt2:(1997-1999)"

Sökning: WFRF:(Nilsson Lennart J.) > (1997-1999)

  • Resultat 1-6 av 6
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1.
  • Fissum, Kevin, et al. (författare)
  • High-resolution measurement of the 12C(γ,p)11B reaction to excited states for Eγ=50–70MeV
  • 1998
  • Ingår i: Physical Review C: covering nuclear physics. - 2469-9985. ; 58:4, s. 2167-2173
  • Tidskriftsartikel (refereegranskat)abstract
    • Relative population of states in 11B following the 12C(γ,p) reaction has been measured with high resolution using the deexcitation γ-ray technique. The states near 7 MeV in 11B are clearly resolved and the measured population clarifies earlier conflicting data. Comparison of the results with new calculations indicates the importance of both one-nucleon and multinucleon processes.
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2.
  • Sims, D. A., et al. (författare)
  • (γ,n) study of the isovector quadrupole resonance in 40Ca
  • 1997
  • Ingår i: Physical Review C: covering nuclear physics. - 2469-9985. ; 55:3, s. 1288-1294
  • Tidskriftsartikel (refereegranskat)abstract
    • The forward-to-backward asymmetry of neutrons emitted in the 40Ca(γ,n0) reaction was measured at photon energies in the range of 27–50 MeV. An energy-dependent asymmetry was observed that is interpreted as evidence of interference between the isovector quadrupole resonance and the giant dipole resonance. Data analysis in terms of semiclassical and direct-semidirect models estimate the isovector quadrupole resonance to be at an excitation energy of 31.0±1.5 MeV, with a width of 16.0±1.5 MeV, and exhausting most of the energy-weighted sum rule for the isovector quadrupole resonance.
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3.
  • Horch, Alexander, et al. (författare)
  • Dynamic simulation of a thermomechanical pulp refiner
  • 1997
  • Ingår i: Nordic Pulp and Paper Research Journal. - 2000-0669 .- 0283-2631. ; 12:4, s. 270-275
  • Tidskriftsartikel (refereegranskat)abstract
    • The aim of this paper is to describe a model for dynamic simulation of a TMP refiner. The temperature profile along the radius of the refiner, outlet consistency and motor load are considered as outputs of the simulation, whereas the chip screw speed and dilution water flow setpoints are the inputs. The dynamic model of the refiner, as such, has been derived from first principles. The motor load and input dynamics, however, are based on black-box identifications. The model has been implemented in MATLAB/SIMULINK. Simulations are compared to corresponding data from experiments with the refiner.
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6.
  • Sims, D. A., et al. (författare)
  • The He(γ,n) reaction: a potential testing ground for the alpha-particle wavefunction
  • 1998
  • Ingår i: Physics Letters B. - 0370-2693. ; 442:1-4, s. 43-47
  • Tidskriftsartikel (refereegranskat)abstract
    • Differential cross sections (σ(Eγ,θn)) for the He(γ,n) reaction have been measured at Eγ=50–71 MeV and θn=30–120°. These data are compared with theoretical predictions where a microscopic calculation of the He and He wavefunctions has been made within the Alt-Grassberger-Sandhas, integral-equation formalism.
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  • Resultat 1-6 av 6

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