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Träfflista för sökning "WFRF:(Johannsen L.) srt2:(1988-1989)"

Search: WFRF:(Johannsen L.) > (1988-1989)

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1.
  • Axelsson, H., et al. (author)
  • Candidates for Electron-Neutrino Mass Measurements - the Case of Kr-81
  • 1988
  • In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - : Elsevier BV. - 0370-2693. ; 210:1-2, s. 249-252
  • Journal article (peer-reviewed)abstract
    • The nuclear data of the known candidates for neutrino mass determination by resonant electron-capture beta decay are reviewed. New results are presented for the isotope 81Kr, where the transition to the 276 keV state has been found to have QEC=4.7±0.5 keV and a branching ratio of (3.0±0.2)×10−3
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2.
  • Borge, M. J. G., et al. (author)
  • Beta-Delayed Proton and Alpha Emission in the Decay of Ne-17
  • 1988
  • In: Nuclear Physics A. - : Elsevier BV. - 0375-9474. ; 490:2, s. 287-306
  • Journal article (peer-reviewed)abstract
    • The beta-delayed proton and alpha spectra from 17Ne have been studied with Si-detectors. The Gamow-Teller strength in the decay of 17Ne has been extracted and compared with a two-particle-one-hole shell-model calculation. The experimental strength is quenched by a factor of 0.82 with respect to the calculated one. Furthermore, the decay scheme has been improved and is discussed in some detail. The proton emitting levels in 17F are very broad and the line shapes are strongly influenced by phase-space effects. Interference between peaks corresponding to the same intermediate spin is a prominent feature emerging clearly with the good resolution and statistics of the present work.
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