Abstract
The shape of exotic even-mass Pb182-190 isotopes was probed by measurement of optical isotope shifts providing mean square charge radii (delta <r(2)>). The experiment was carried out at the ISOLDE (CERN) on-line mass separator, using in-source laser spectroscopy. Small deviations from the spherical droplet model are observed, but when compared to model calculations, those are explained by high sensitivity of delta <r(2)> to beyond mean-field correlations and small admixtures of intruder configurations in the ground state. The data support the predominantly spherical shape of the ground state of the proton-magic Z=82 lead isotopes near neutron midshell (N=104).
Original language | English |
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Article number | ARTN 112502 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 98 |
Issue number | 11 |
DOIs | |
Publication status | Published - 16 Mar 2007 |
Keywords
- INTRUDER STATES
- SHIFT
- UPDATE
- ALPHA-DECAY
- ATOMIC SPECTROSCOPY
- PB-186
- MOMENTS
- PB
- ISOLDE RILIS