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Träfflista för sökning "WFRF:(Holzmann Martin J.) srt2:(1996-1999)"

Sökning: WFRF:(Holzmann Martin J.) > (1996-1999)

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1.
  • Aleksandrov, D., et al. (författare)
  • Invariant mass spectrum and alpha-n correlation function studied in the fragmentation of He-6 on a carbon target
  • 1998
  • Ingår i: Nuclear Physics A. - 0375-9474. ; 633:2, s. 234-246
  • Tidskriftsartikel (refereegranskat)abstract
    • Momentum distributions and invariant mass spectra from the breakup of He-6 ions with an energy of 240 MeV/u interacting with a carbon target have been studied. The data were used to extract information about the reaction mechanism which is influenced by the structure of He-6. It is found that the dominant reaction mechanism is a two-step process: knock out of one neutron followed by the decay of the He-5 resonance. The shape of the (alpha+n) two-body invariant mass spectrum is interpreted as mainly reflecting the 5He ground state which is a J(pi) = 3/2(-) resonance. However, no evidence for correlations between cu particles and neutrons is observed in the momentum widths of the distributions. It is demonstrated that a combined analysis of the two-body invariant mass spectrum and an appropriate correlation function may be used to determine the properties of the intermediate resonance. (C) 1998 Elsevier Science B.V.
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2.
  • Chulkov, L. V., et al. (författare)
  • Large spin alignment of the unbound He-5 fragment after fragmentation of 240 MeV/nucleon He-6
  • 1997
  • Ingår i: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 79:2, s. 201-204
  • Tidskriftsartikel (refereegranskat)abstract
    • Peripheral fragmentation of a 240 MeV/nucleon beam of the halo nucleus He-6 incident on carbon target has been studied in a kinematically complete experiment. It is found that one-neutron stripping to the unbound nucleus He-5 is the dominant fragmentation mechanism and that it leads to a spin alignment of He-5 in a plane perpendicular to the He-5 momentum vector. This is expected to be a common feature for all neutron halo nuclei.
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3.
  • Nilsson, Thomas, 1965, et al. (författare)
  • He-6 and neutron momentum distributions from He-8 in nuclear break-up reactions at 240 MeV/u
  • 1996
  • Ingår i: Nuclear Physics A. - 0375-9474. ; 598:3, s. 418-434
  • Tidskriftsartikel (refereegranskat)abstract
    • Neutron and He-6 momentum distributions from He-8 break-up reactions in a C target have been measured at 240 MeV/u. The two-neutron removal cross section was found to be sigma(-2n) = 0.27 +/- 0.03 b. The nature of the momentum distributions is interpreted in some simple reaction scenarios.
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  • Resultat 1-3 av 3

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