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Upper limits for the existence of long-lived isotopes of roentgenium in natural gold

Dellinger, F.; Kutschera, Walter; Forstner, O; Golser, Robin; Priller, Alfred; Steier, P; Wallner, Anton; Winkler, G.


A sensitive search for isotopes of a superheavy element (SHE) in natural gold materials has been performed with accelerator mass spectrometry at the Vienna Environmental Research Accelerator, which is based on a 3-MV tandem accelerator. Because the most likely SHE in gold is roentgenium (Rg, Z=111), the search concentrated on Rg isotopes. Two different mass regions were explored: (i) For the neutron-deficient isotopes Rg261 and Rg265, abundance limits in gold of 3×10-16 were reached (no events...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Physical Review C: Nuclear Physics
DOI: 10.1103/PhysRevC.83.015801
Access Rights: Open Access


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