Journal article

Publication year: 2012

Pages: 1207-1210

Journal: Science

Volume number: 337

Issue number: 6099

ISSN: 0036-8075

eISSN: 1095-9203

Open access status: Green

DOI Link: https://doi.org/10.1126/science.1225636

Publisher: American Association for the Advancement of Science

Abstract: 
Quantum-mechanical shell effects are expected to strongly enhance nuclear binding on an "island of stability" of superheavy elements. The predicted center at proton number Z = 114, 120, or 126 and neutron number N = 184 has been substantiated by the recent synthesis of new elements up to Z = 118. However, the location of the center and the extension of the island of stability remain vague. High-precision mass spectrometry allows the direct measurement of nuclear binding energies and thus the determination of the strength of shell effects. Here, we present such measurements for nobelium and lawrencium isotopes, which also pin down the deformed shell gap at N = 152.

Harvard Citation style: Ramirez, E., Ackermann, D., Blaum, K., Block, M., Droese, C., Duellmann, C., et al. (2012) Direct Mapping of Nuclear Shell Effects in the Heaviest Elements, Science, 337(6099), pp. 1207-1210. https://doi.org/10.1126/science.1225636

APA Citation style: Ramirez, E., Ackermann, D., Blaum, K., Block, M., Droese, C., Duellmann, C., Dworschak, M., Eibach, M., Eliseev, S., Haettner, E., Herfurth, F., Hessberger, F., Hofmann, S., Ketelaer, J., Marx, G., Mazzocco, M., Nesterenko, D., Novikov, Y., Plass, W., ...Weber, C. (2012). Direct Mapping of Nuclear Shell Effects in the Heaviest Elements. Science. 337(6099), 1207-1210. https://doi.org/10.1126/science.1225636