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Träfflista för sökning "WFRF:(Bao Ling 1980) ;pers:(Jeppesen H. B.)"

Sökning: WFRF:(Bao Ling 1980) > Jeppesen H. B.

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1.
  • Madurga, M., et al. (författare)
  • Study of $[$beta$]$-delayed 3-body and 5-body breakup channels observed in the decay of 11Li
  • 2008
  • Ingår i: Nuclear Physics A. - : Elsevier BV. ; 810, s. 1-12
  • Tidskriftsartikel (refereegranskat)abstract
    • The [beta]-delayed charged particle emission from 11Li has been studied with emphasis on the three-body n[alpha]6He and five-body 2[alpha]3n channels from the 10.59 and 18.15 MeV states in 11Be. Monte Carlo simulations using an R-matrix formalism lead to the conclusion that the AHe resonance states play a significant role in the break-up of these states. The results exclude an earlier assumption of a phase-space description of the break-up process of the 18.15 MeV state. Evidence for extra sequential decay paths is found for both states.
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2.
  • Madurga, M., et al. (författare)
  • Study of β-delayed charged particle emission of 11Li: Evidence of new decay channels
  • 2008
  • Ingår i: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 111:1
  • Tidskriftsartikel (refereegranskat)abstract
    • The break-up of the 18.2 MeV state in 11Be was studied in a 11Li β-decay experiment. We report here on the study of the dominating breakup channels involving na6He or 3n2α in the final state, with special emphasis dedicated in this contribution to the three-particle channel. The two emitted charged particles were detected in coincidence using a highly segmented experimental set-up. The observed experimental energy-vs-energy scatter plot indicates a sequential breakup where nuclei of mass 4, alpha particles, and mass 7, 7He, are involved. A Monte-Carlo simulation of the sequential channel, 11Be* → α + 7He → nα6He was performed and compared to the experimental data and to a simulation of the direct break-up of the 18.2 MeV state nα6He by phase space energy distribution. The energy-versus-energy plot are explained by the sequential simulation but not by the phase space simulation.
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