Laser spectroscopy of cooled zirconium fission fragments.
The first on-line laser spectroscopy of cooled fission fragments is reported. The r ions, produced in uranium fission, were extracted and separated using an ion guide isotope separator. The ions were cooled and bunched for collinear laser spectroscopy by a gas-filled linear Paul trap. New results for nuclear mean-square charge radii, dipole, and quadrupole moments are reported across the N=60 shape change. The mean-square charge radii are found to be almost identical to those of the Sr isotones and previously offered modeling of the radial changes is critically reviewed.
Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom.
P
P
Campbell
H L
HL
Thayer
J
J
Billowes
P
P
Dendooven
K T
KT
Flanagan
D H
DH
Forest
J A R
JA
Griffith
J
J
Huikari
A
A
Jokinen
R
R
Moore
A
A
Nieminen
G
G
Tungate
S
S
Zemlyanoi
J
J
Aystö