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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, p. 052503-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, p. 052503-
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, id: diva2:404865
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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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