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Träfflista för sökning "WFRF:(Hansen T) srt2:(1985-1989)"

Sökning: WFRF:(Hansen T) > (1985-1989)

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1.
  • Bjornstad, T., et al. (författare)
  • Study of the Giant Gamow-Teller Resonance in Nuclear Beta-Decay - the Case of Ar-32
  • 1985
  • Ingår i: Nuclear Physics A. - : Elsevier BV. - 0375-9474. ; 443:2, s. 283-301
  • Tidskriftsartikel (refereegranskat)abstract
    • Delayed proton and gamma emissions following the β-decay of 32Ar have been studied. The half-life of 32Ar is 98 ± 2 ms, and the T = 2 analogue state in 32Cl lies at the excitation energy 5036 ± 12 keV. From the intensity of the feeding to this state the proton intensities can be converted to an absolute scale leading to a total proton branching ratio of (43 ± 3)%. From proton-gamma coincidence measurements it emerges that (1.9 ± 0.2)% of the protons lead to the first-excited state in 31S. A level scheme up to 8.75 MeV excitation in 32Cl has been constructed and the Gamow-Teller strength function has been deduced. The result is a renormalization of the axial-vector strength to (49 ± 5)% of the free-nucleon value.
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2.
  • Borchert, G. L., et al. (författare)
  • Mechanisms for K X-Ray-Energy Shifts
  • 1987
  • Ingår i: Zeitschrift für Naturforschung - Section A Journal of Physical Sciences. - 0932-0784. ; 42:8, s. 781-785
  • Tidskriftsartikel (refereegranskat)
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3.
  • Borge, M. J. G., et al. (författare)
  • Study of the Giant Gamow-Teller Resonance in Nuclear Beta-Decay - the Case of Ar-33
  • 1987
  • Ingår i: Physica Scripta. - : IOP Publishing. - 1402-4896 .- 0031-8949. ; 36:2, s. 218-223
  • Tidskriftsartikel (refereegranskat)abstract
    • Delayed proton and gamma emissions following the beta decay of 33Ar have been studied. From the calculated intensity of the feeding to the T = 3/2 analogue state in 33C1, the proton intensities have been put on an absolute scale leading to a proton branching ratio of 38.7 ± 1.0%. A proton branch to the first excited state in 32S at 2230.2 keV (1π = 2+) with an intensity of 0.77 ± 0.10% was obtained from gamma singles and proton-gamma coincidence data. The complete spectroscopic information on 33Ar allows the Gamow-Teller (GT) strength function from the gound state and up to 9.25 MeV excitation energy in 33C1 to be deduced. The total strength observed in this interval is 2.90 in absolute units.
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4.
  • Dyrberg, T., et al. (författare)
  • Patogenesen ved type 1 diabetes.
  • 1989
  • Ingår i: Ugeskrift for Laeger. - 0041-5782. ; 151:17, s. 1029-1030
  • Tidskriftsartikel (refereegranskat)
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5.
  • Nyholm, R., et al. (författare)
  • Submicrometer-resolution photoelectron-spectroscopy at MAX Lab
  • 1989
  • Ingår i: Review of Scientific Instruments. - : AIP Publishing. - 0034-6748 .- 1089-7623. ; 60:7, s. 2168-2171
  • Tidskriftsartikel (refereegranskat)abstract
    • The design of a photoemission microprobe beamline at the MAX laboratory is presented. The beamline will utilize the radiation from a 26 period undulator on the 550-MeV MAX storage ring. The beamline will be capable of providing about 1010 photons/s of monochromatized radiation (bandwidth better than 0.25 eV) in the energy range of 20 to 150 eV focused into a submicrometer focal spot. It will be used for scanning photoemission experiments with a lateral resolution better than 1 μm. The optical system is comprised of a plane-grating monochromator with a Kirkpatrick-Baez objective and a specially designed ellipsoidal focusing mirror.
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  • Resultat 1-5 av 5

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