Semi-classical shears and effective forces

Journal Article · Thu Sep 02 00:00:00 EDT 1999 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.59563· OSTI ID:20216653

Macchiavelli, A O ^[1]; Clark, R M ^[1]; Deleplanque, M A ^[1]; Diamond, R M ^[1]; Fallon, P ^[1]; Lee, I Y ^[1]; Stephens, F S ^[1]; Vetter, K ^[1]

---

1. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

We present a semi-classical analysis of the B(M1) and B(E2) transition probabilities in the shears bands in {sup 193-199}Pb as a function of the shears angle. This provides a semi-empirical confirmation of the shears mechanism proposed by S. Frauendorf using the Tilted-Axis-Cranking model. We interpret this as a consequence of a residual interaction between the proton and neutron blades, and it is shown that the main ingredient of this effective force can be described by a P{sub 2}({theta}) term with a strength of 400-600 keV. Such an interaction can be mediated through the core by particle-vibration coupling. The competition between the shears and the rotation of the core is investigated within the framework of a classical solution of two particles-plus-rotor model. (c) 1999 American Institute of Physics.

• OSTI ID: 20216653
• Journal Information: AIP Conference Proceedings, Vol. 481, Issue 1; Other Information: PBD: 2 Sep 1999; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
LEAD ISOTOPES
M1-TRANSITIONS
E2-TRANSITIONS
CRANKING MODEL
NUCLEAR DEFORMATION
ANGULAR MOMENTUM
NUCLEAR POTENTIAL
THEORETICAL DATA