High-spin states in 137Nd: A large variety of collective rotations

✍ Scribed by C.M. Petrache; R. Venturelli; D. Vretenar; D. Bazzacco; G. Bonsignori; S. Brant; S. Lunardi; M.A. Rizzutto; C. Rossi Alvarez; G. de Angelis; M. De Poli; D.R. Napoli

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 986 KB
• Volume: 617
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(97)00042-0

✦ Synopsis

The high-spin structure of J37Nd has been studied through the ll°pd(3°Si,3n) and the 123Sb(JgE5n) reactions at beam energies of 125 and 97 MeV, respectively. A very complex level scheme has been established up to spin 97/2 + and :23.9 MeV of excitation energy. Regular bands are observed at high-spin, consisting of either M1 and E2 crossover transitions, or of stretched M1 or E2 transitions. Calculations have been performed in the framework of the interacting boson-fermion model with broken pairs for the relatively strong A1 = 1 regular structures observed above spins 27/2and 31/2-, which are well described by the (phil~2) 3 and vh11/2®(~rhll/2) 2 configurations, respectively. (~) 1997 Elsevier Science B.V.