6533b7dbfe1ef96bd126feec
RESEARCH PRODUCT
Evidence for three microscopically different kinds ofE1 transition in lead-region nuclei
T. Lönnrothsubject
PhysicsNuclear and High Energy PhysicsGroup (periodic table)Transition (fiction)Nuclear fusionElectric dipole transitionMolecular physicsdescription
A survey of electric dipole transition rates, or B(E1) values, is done for lead-region nuclei with 82≦Z≦90 and 112≦N≦134. It is found that the major part of the E1 transitions are hindered by a factor of about 106–107 and these transitions are interpreted to proceed via admixtures of the collective 1− state. A second group, which is generally 10–100 times less hindered and is involving the πi13/2 orbital in the initial states, is suggested to proceed via the allowed πi11/2→πh9/2 admixtures in the wave functions. These two groups are compared to a third newly established category, the α-cluster or IBAp-boson mode, of the so-called vibron model.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1988-03-01 | Zeitschrift f�r Physik A Atomic Nuclei |