Lifetimes of excited states in octupole-collective {sup 142,144}Ba nuclei

Lifetimes of excited states have been measured for the positive-parity rotational bands in neutron-rich {sup 142,144}Ba as well as the 7{sup -} and 9{sup -} states of the negative-parity band in {sup 144}Ba using the differential Doppler shift method. The deduced quadrupole moment, Q{sub t}, of the...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. C, Nuclear physics Nuclear physics, 2005-01, Vol.71 (1)
Main Authors: Biswas, D.C., Smith, A.G., Wall, R.M., Patel, D., Simpson, G.S., Cullen, D.M., Durell, J.L., Freeman, S.J., Lisle, J.C., Smith, J.F., Varley, B.J., Yousef, T., Barreau, G., Petit, M., Theisen, Ch, Bouchez, E., Houry, M., Lucas, R., Cahan, B., Le Coguie, A.
Format: Article
Language:English
Subjects:
ANGULAR MOMENTUM
BARIUM 142
BARIUM 144
DOPPLER EFFECT
ELECTRIC DIPOLE MOMENTS
LIFETIME
NEUTRON-RICH ISOTOPES
NUCLEAR PHYSICS AND RADIATION PHYSICS
OCTUPOLES
PARITY
QUADRUPOLE MOMENTS
ROTATIONAL STATES
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Lifetimes of excited states have been measured for the positive-parity rotational bands in neutron-rich {sup 142,144}Ba as well as the 7{sup -} and 9{sup -} states of the negative-parity band in {sup 144}Ba using the differential Doppler shift method. The deduced quadrupole moment, Q{sub t}, of the positive-parity band decreases with angular momentum and overall shows good agreement with earlier measurements. The measured lifetimes of 7{sup -} and 9{sup -} states are used to determine the electric dipole moment, D{sub 0}=0.17(3) and 0.09(1) e fm, respectively, in the negative-parity octupole band of {sup 144}Ba.
ISSN:0556-2813
1089-490X
DOI:10.1103/PhysRevC.71.011301