Spectra and E2 Transition Strengths forN=ZEven–Even Nuclei in IBM-3 Dynamical Symmetry Limits with GoodsanddBoson Isospins
✍ Scribed by V.K.B. Kota
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 616 KB
- Volume
- 265
- Category
- Article
- ISSN
- 0003-4916
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✦ Synopsis
Dynamical symmetries of IBM-3 (interacting boson model including isospin (T)) with not only good T but also good s and d boson isospins (T s , T d ) carry signatures typical of some heavy (proton rich) NtZ even even nuclei and therefore complete study of these symmetries is important for proton drip line nuclei. With good (T s , T d ) there are three dynamical symmetries in IBM-3 and they are called
and O sd (18)#O d (15)ÄO T s (3) limits; the last two symmetry limits carry :-particle-like correlations. For these three symmetry limits group chains, irrep labels, group generators, linear and quadratic Casimir operators, and energy formulas are given. For T=0 even even nuclei, in the three symmetry limits analytical formulas are given for B(E2)'s involving low-lying levels and also for the yrast band members. There are clear signatures of isospin both in spectra and B(E2)'s which can be subjected to experimental tests in the future.