✦ LIBER ✦

Behavior of the giant-dipole resonance in 120Sn and 208Pb at high excitation energy

✍ Scribed by W.E. Ormand; P.F. Bortignon; R.A. Broglia; A. Bracco

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 1019 KB
Volume: 614
Category: Article
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(96)00464-2

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✦ Synopsis

The properties of the giant-dipole resonance (GDR) are calculated as a function of excitation energy, angular momentum, and the compound nucleus particle decay width in the nuclei 12°Sn and 2°spb, and are compared with recent experimental data. Differences observed in the behavior of the full-width-at-half-maximum of the GDR for ~2°Sn and maPb are attributed to the fact that shell corrections in 2°spb are stronger than in ~2°Sn, and favor the spherical shape at low temperatures. The effects shell corrections have on both the free energy and the moments of inertia are discussed in detail. At high temperature, the FWHM in m°Sn exhibits effects due to the evaporation width of the compound nucleus, while these effects are predicted for 2°spb.

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