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Early Onset of Ground State Deformation in Neutron Deficient Polonium Isotopes
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2011 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 106, no 5, 052503- p.Article in journal (Refereed) Published
Abstract [en]

In-source resonant ionization laser spectroscopy of the even-A polonium isotopes Po-192-210,Po-216,Po-218 has been performed using the 6p(3)7s S-5(2) to (6)p(3)7p P-5(2) (lambda = 843.38 nm) transition in the polonium atom (Po-I) at the CERN ISOLDE facility. The comparison of the measured isotope shifts in Po200-210 with a previous data set allows us to test for the first time recent large-scale atomic calculations that are essential to extract the changes in the mean-square charge radius of the atomic nucleus. When going to lighter masses, a surprisingly large and early departure from sphericity is observed, which is only partly reproduced by beyond mean field calculations.

Place, publisher, year, edition, pages
2011. Vol. 106, no 5, 052503- p.
Keyword [en]
CHARGE-RADII, NUCLEAR MOMENTS, HYPERFINE-STRUCTURE, LASER SPECTROSCOPY, DROPLET-MODEL, MASS NUCLEI, SHIFTS, COEXISTENCE, PO-192, UPDATE
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Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-31308DOI: 10.1103/PhysRevLett.106.052503ISI: 000286879900003Scopus ID: 2-s2.0-79551652088OAI: oai:DiVA.org:kth-31308DiVA: diva2:404865
Note
QC 20110318Available from: 2011-03-18 Created: 2011-03-14 Last updated: 2017-12-11Bibliographically approved

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Sjödin, Anna Marica
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