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Phys Rev Lett. 2002 Aug 19;89(8):082501. doi: 10.1103/PhysRevLett.89.082501. Epub 2002 Aug 05.

Laser spectroscopy of cooled zirconium fission fragments.

Physical review letters

P Campbell, H L Thayer, J Billowes, P Dendooven, K T Flanagan, D H Forest, J A R Griffith, J Huikari, A Jokinen, R Moore, A Nieminen, G Tungate, S Zemlyanoi, J Aystö

Affiliations

  1. Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom.

PMID: 12190460 DOI: 10.1103/PhysRevLett.89.082501

Abstract

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.

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