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Träfflista för sökning "WFRF:(Ekman A.) srt2:(2000-2004)"

Sökning: WFRF:(Ekman A.) > (2000-2004)

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  • Andreoiu, Corina, et al. (författare)
  • First Identification of Excited States in 59Zn
  • 2002
  • Ingår i: European Physical Journal A. Hadrons and Nuclei. - : Springer Science and Business Media LLC. - 1434-6001. ; 15, s. 459-462
  • Tidskriftsartikel (refereegranskat)abstract
    • Excited states in 59Zn were observed for the first time following the fusion-evaporation reaction 24Mg + 40Ca at a beam energy of 60 MeV. The GASP array in conjunction with the ISIS Silicon ball and the NeutronRing allowed for the detection of n-rays in coincidence with evaporated light particles. The mirror symmetry of 59Zn and 59Cu is discussed.
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  • du Rietz, Rickard, et al. (författare)
  • Effective Charges in the fp Shell
  • 2004
  • Ingår i: Physical Review Letters. - 1079-7114. ; 93:22
  • Tidskriftsartikel (refereegranskat)abstract
    • Following the heavy-ion fusion-evaporation reaction S-32+Mg-24 at 95 MeV beam energy the lifetimes of analogue states in the T-z=+/-1/2 A=51 mirror nuclei Fe-51 and Mn-51 have been measured using the Cologne plunger device coupled to the GASP gamma-ray spectrometer. The deduced B(E2;27/2(-)-->23/2(-)) values afford a unique opportunity to probe isoscalar and isovector polarization charges and to derive effective proton and neutron charges, epsilon(p) and epsilon(n), in the fp shell. A comparison between the experimental results and several different large-scale shell-model calculations yields epsilon(p)similar to1.15e and epsilon(n)similar to0.80e.
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  • Gladnishki, KA, et al. (författare)
  • Angular Momentum Population in the Projectile Fragmentation of 238U at 750 MeV/nucleon
  • 2004
  • Ingår i: Physical Review C (Nuclear Physics). - 0556-2813. ; 69:2
  • Tidskriftsartikel (refereegranskat)abstract
    • A systematic study of the population probabilities of nanosecond and microsecond isomers produced following the projectile fragmentation of U-238 at 750 MeV/nucleon has been undertaken at the SIS/FRS facility at GSI. Approximately 15 isomeric states in neutron-deficient nuclei around A similar to 190 were identified and the corresponding. isomeric ratios determined. The results are compared with a model based on the statistical abrasion-ablation description of relativistic fragmentation and simple assumptions concerning gamma cascades in the final nucleus (sharp cutoff). This model represents an upper limit for the population of isomeric states in relativistic projectile fragmentation. When the decay properties of the states above the isomer are taken into account, as opposed to the sharp cutoff approximation, a good agreement between the experimental and calculated angular momentum population is obtained.
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  • Gladnishki, KA, et al. (författare)
  • Isomer spectroscopy in the neutron-deficient lead region following projectile fragmentation
  • 2003
  • Ingår i: Acta Physica Polonica. Series B: Elementary Particle Physics, Nuclear Physics, Statistical Physics, Theory of Relativity, Field Theory. - 0587-4254. ; 34:4, s. 2395-2398
  • Tidskriftsartikel (refereegranskat)abstract
    • Projectile fragmentation of a 750 MeV/nucleon U-238 beam was used to populate neutron-deficient nuclei around A similar to190. Isomeric states in Hg, Tl, Pb, Bi, and Po isotopes were identified and their lifetimes determined, with the ultimate aim of measuring their isomeric ratios to provide information on the spin population in such reactions.
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  • Resultat 1-10 av 73

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