# Superheavy Elements: A Crossroads

@article{Seaborg1979SuperheavyEA,
title={Superheavy Elements: A Crossroads},
author={Glenn Theodore Seaborg and W. Loveland and David J. Morrissey},
journal={Science},
year={1979},
volume={203},
pages={711 - 717}
}
• Published 23 February 1979
• Physics
• Science
The failure to synthesize superheavy elements by using complete fusion reactions is most likely understandable in terms of the low survival probabilities of the superheavy precursors formed in these reactions or (in some cases) the failure to achieve complete fusion. Further attempts to synthesize these elements by using complete fusion or deep inelastic transfer reactions, or both, are discussed in light of these results.
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• 2011
Microscopic nuclear theories predict a region of superheavy elements (SHEs) at the next doubly magic shell closure above 208Pb. Early models locate the shell closure at Z = 114,more recent
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These results place the architecture of the far-end of the Periodic Table on the test bench and probe the increasingly strong relativistic effects that influence the chemical properties there.
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• M. Schädel
• Physics
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
• 2015
A test bench is established to challenge the validity and predictive power of modern fully relativistic quantum chemical models and to probe ‘relativistically’ influenced chemical properties and the architecture of the periodic table at its farthest reach.

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• Physics
• 1978
A search with radiochemical methods for long-lived superheavy elements in 238U targets bombarded with intense beams of136Xe ions produced negative results. A formation cross section of ≤1×10−35 cm2
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A Woods-Saxon potential which reproduces the single particle levels in the lead region provides the basis for a discussion of the stability properties of nuclei in the superheavy region. A closed
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This article pertains to the most newly-discovered and most sensational mode of transmutation, in which the entry of a neutron into a massive atom-nucleus brings about an internal explosion in which
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We have searched for superheavy elements 110 to 116 with half-lives between ${10}^{4}$ and ${10}^{8}$ s in fractions chemically separated after each of a series of bombardments of $^{248}\mathrm{Cm}$
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The stability problem for the superheavy elements has been reconsidered based on the use of the shape-dependent droplet model and the modified-oscillator potential. The effect of axial asymmetry on