| Autor: |
Hofmann, M., Bäumer, C., van den Berg, A.M., Frekers, D., Hannen, V.M., Harakeh, M.N., de Huu, M.A., Kalmykov, Y., von Neumann-Cosel, P., Ponomarev, V.Yu., Rakers, S., Reitz, B., Richter, A., Schweda, K., Shevchenko, A., Wambach, J., Wörtche, H.J. |
| Přispěvatelé: |
Research unit Astroparticle Physics, KVI - Center for Advanced Radiation Technology |
| Jazyk: |
angličtina |
| Rok vydání: |
2007 |
| Předmět: |
|
| Zdroj: |
Physical Review C, 76(1):014314. AMER PHYSICAL SOC |
| Popis: |
The excitation-energy region up to 23 MeV in Ni-58 has been investigated with the (p,p(')) reaction at an incident energy of 172 MeV and forward angles favoring the excitation of the spin-dipole mode in the continuum. The measured cross sections, spin-flip cross sections, and spin-flip probabilities are compared to microscopic reaction-model calculations using various effective projectile-target interactions. The nuclear structure input, which takes into account one-particle one-hole (1p1h) as well as two-particle-two hole (2p2h) excitations, allows for a reasonable description of the continuum region well above the particle-decay thresholds. However, considerable problems remain in the description of spin-flip resonances at lower excitation energies, which cannot be explained by a quenching of the spin-isospin interaction. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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