Details

Autor(en) / Beteiligte

• Giacoppo, F.
• Bello Garrote, F. L.
• Bernstein, L. A.
• Bleuel, D. L.
• Eriksen, T. K.
• Firestone, R. B.
• Görgen, A.
• Guttormsen, M.
• Hagen, T. W.
• Kheswa, B. V.
• Klintefjord, M.
• Koehler, P. E.
• Larsen, A. C.
• Nyhus, H. T.
• Renstrøm, T.
• Sahin, E.
• Siem, S.
• Tornyi, T.

Titel

Level densities and thermodynamical properties of Pt and Au isotopes

Ist Teil von

• Physical review. C, Nuclear physics, 2014-11, Vol.90 (5), Article 054330

Ort / Verlag

American Physical Society

Erscheinungsjahr

2014

Link zum Volltext

Quelle

PROLA

Beschreibungen/Notizen

• The nuclear level densities of 194–196Pt and 197,198Au below the neutron separation energy have been measured using transfer and scattering reactions. All the level density distributions follow the constant-temperature description. Each group of isotopes is characterized by the same temperature above the energy threshold corresponding to the breaking of the first Cooper pair. A constant entropy excess ΔS=1.9kB and 1.1kB is observed in 195Pt and 198Au with respect to 196Pt and 197Au, respectively, giving information on the available single-particle level space for the last unpaired valence neutron. The breaking of nucleon Cooper pairs is revealed by sequential peaks in the microcanonical caloric curve. © 2014 American Physical Society