Discovery of $^{229}$Rn and the structure of the heaviest Rn and Ra isotopes from Penning-trap mass measurements

The masses of the neutron-rich radon isotopes $^{223–229}$Rn have been determined for the first time, using the ISOLTRAP setup at CERN ISOLDE. In addition, this experiment marks the first discovery of a new nuclide,$^{229}$Rn, by Penning-trap mass measurement. The new, high-accuracy data allow a fin...

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Detalles Bibliográficos
Autores principales: Neidherr, D, Audi, G, Beck, D, Blaum, K, Böhm, Ch, Breitenfeldt, M, Cakirli, R B, Casten, R F, George, S, Herfurth, F, Herlert, A, Kellerbauer, A G, Kowalska, M, Lunney, D, Minaya-Ramirez, E, Naimi, S, Noah, E, Penescu, L, Rosenbusch, M, Schwarz, S, Schweikhard, L, Stora, T
Lenguaje:eng
Publicado: 2009
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.102.112501
http://cds.cern.ch/record/1190495
Descripción
Sumario:The masses of the neutron-rich radon isotopes $^{223–229}$Rn have been determined for the first time, using the ISOLTRAP setup at CERN ISOLDE. In addition, this experiment marks the first discovery of a new nuclide,$^{229}$Rn, by Penning-trap mass measurement. The new, high-accuracy data allow a fine examination of the mass surface, via the valence-nucleon interaction ${\delta}$V$_{pn}$. The results reveal intriguing behavior, possibly reflecting either a N=134 subshell closure or an octupolar deformation in this region.

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