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Digitale Medien

E0 andM1 excitations in56Ni (1991)

Migli, E. ; Drożdż, S. ; Speth, J. ; [weitere]

Springer

The European physical journal 340 (1991), S. 111-117

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ISSN: 1434-601X

Schlagwort(e): 21.10.-k ; 21.60.-n ; 24.30.-v

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The centroid energy and the decay width of the giant monopole resonance in the unstable nucleus56Ni are predicted. The resulting 0+, ΔT=0 strength distribution, including the escape and the spreading width, displays a structure centered at around 18 MeV with the total width of about 5 MeV. We also study theM1 response in this nucleus which shows a strong isovector transition at 9.6 MeV and a weak isoscalar one at 7.5 MeV.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01303822

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Digitale Medien

M1 resonances in unstable magic nuclei (1993)

Kamerdzhiev, S. ; Speth, J. ; Tertychny, G. ; [weitere]

Springer

The European physical journal 346 (1993), S. 253-260

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ISSN: 1434-601X

Schlagwort(e): 21.10.-k ; 21.60.-n ; 24.30.Cz

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Within a microscopic approach which takes into account RPA configurations, the single-particle continuum and more complex 1p 1 h⊗phonon configurations isoscalar and isovector M1 excitations for the unstable nuclei56,78Ni and100,132Sn are calculated. For comparison, the experimentally known Ml excitations in40Ca and208Pb have also been calculated. In the latter nuclei good agreement in the centroid energy, the total transition strength and the resonance width is obtained. With the same parameters we predict the magnetic excitations for the unstable nuclei. The strength is sufficiently concentrated to be measurable in radioactive beam experiments. New features are found for the very neutron rich nucleus78Ni and the neutron deficient nucleus100Sn.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01292513

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Digitale Medien

On the range of the nucleon-antinucleon interaction (1989)

Haidenbauer, J. ; Hippchen, T. ; Holinde, K. ; [weitere]

Springer

The European physical journal 334 (1989), S. 467-471

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ISSN: 1434-601X

Schlagwort(e): 13.75 ; 21.30

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The range of theN¯N interaction is re-examined. We find that differences in theN¯N models do have an influence on the region where annihilation predominantly takes place. AN¯N model derived consistently within meson theory leads to an annihilation range around 1 fm in spite of the small Compton wavelength of the exchanged baryons usually advocated in range arguments.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01294754

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