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Träfflista för sökning "(WFRF:(Holzmann W.)) srt2:(1995-1999) srt2:(1997)"

Sökning: (WFRF:(Holzmann W.)) srt2:(1995-1999) > (1997)

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1.
  • 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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2.
  • Zinser, M., et al. (författare)
  • Invariant-mass spectroscopy of Li-10 and Li-11
  • 1997
  • Ingår i: Nuclear Physics A. - 0375-9474. ; 619:1-2, s. 151-176
  • Tidskriftsartikel (refereegranskat)abstract
    • Break-up of secondary Li-11 ion beams (280 MeV/nucleon) on C and Pb targets into Li-9 and neutrons is studied experimentally. Cross sections and neutron multiplicity distributions are obtained, characterizing different reaction mechanisms. Invariant-mass spectroscopy for Li-11 and Li-10 is performed. The E1 strength distribution, deduced from electromagnetic excitation of Li-11 up to an excitation energy of 4 MeV comprises similar to 8% of the Thomas-Reiche-Kuhn energy-weighted sumrule strength. Two low-lying resonance-like structures are observed for Li-10 at decay energies of 0.21(5) and 0.62(10) MeV, the former one carrying 26(10)% of the strength and likely to be associated with an s-wave neutron decay. A strong di-neutron correlation in Li-11 can be discarded. Calculations in a quasi-particle RPA approach are compared with the experimental results for Li-10 and Li-11. (C) 1997 Elsevier Science B.V.
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