Vibrational states on the isomers in deformed nuclei
199819 pages
Published in:
- Nucl.Phys.A 633 (1998) 247-265
- Published: 1998
View in:
Citations per year
Abstract: (Elsevier)
The mathematical formalism of description within the quasiparticle-phonon nuclear model of vibrational states on two-, three- and four-quasiparticle isomers is presented. The vibrational states on the, K π = 16 + isomer in 178 Hf, on the K π = 25 2 − -isomer in 179 Hf and on the K π = 9 isomer in 180 Ta are calculated. It is shown that there are many fast γ-ray transitions from the isomers to the energy range of 5–6 MeV in 178 Hf and to the energy ranges of 2.6–3.0 and 3.4–3.6 MeV in 180 Ta. The energy of the neutron capture states on the isomer 178 Hf m2 is 6 MeV above the yrast line. It is shown that there are fast γ-ray cascades from the K π = 31 2 and 33 2 + components of capture states to the isomer 179 Hf m with K π = 25 2 − . This is a unique case to study the fragmentation of five-quasiparticle states much above the yrast line. Investigation of the fragmentation of many-quasiparticle and many-quasiparticle ⊗ phonon states is necessary to study the order-to-chaos transition in nuclei.- 21.10.Pc
- 21.10.Re
- 21.60.Jz
- 24.60.Lz
- 27.70.+q
- Quasiparticle-phonon nuclear model
- E1, E2, M1 excitations on isomers 178 Hf m2 , 179 Hf m , 180 Ta m
- E1, E2, M1 excitations on isomers 178Hf m2, 179Hf m, 180Ta m
References(48)
Figures(0)
- [1]
- [2]
- [3]
- [3]
- [4]
- [5]
- [6]
- [7]
- [8]
- [9]
- [10]
- [11]
- [12]
- [13]
- [14]
- [14]
- [15]
- [16]
- [17]
- [18]
- [19]
- [20]
- [21]
- [22]
- [23]