Doubly Magic NucleusHs162<mml:none/><mml:mprescripts/>108270

2006/12/14 by J. Dvořák, W. Brüchle, M. L. Chelnokov +21 · 6 citations
Physics and Astronomy · #Nuclear physics research studies #Astronomical and nuclear sciences #Atomic and Molecular Physics #Physics #Nuclide #MAGIC (telescope) #Nuclear reaction #Nuclear physics #Spontaneous fission #Atomic physics #Fission #Neutron

paper · pdf · doi:10.1103/physrevlett.97.242501

openalex publication_date 2006/12/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

Theoretical calculations predict ²⁷⁰Hs (Z=108, N=162) to be a doubly magic deformed nucleus, decaying mainly by \ensuremathα-particle emission. In this work, based on a rapid chemical isolation of Hs isotopes produced in the ²⁶Mg+²⁴⁸Cm reaction, we observed 15 genetically linked nuclear decay chains. Four chains were attributed to the new nuclide ²⁷⁰Hs, which decays by \ensuremathα-particle emission with Q_\ensuremathα=9.02\ifmmode±\else\textpm\fi0.03 MeV to ²⁶⁶Sg which undergoes spontaneous fission with a half-life of 444_\ensuremath-148⁺⁴⁴⁴ ms. A production cross section of about 3 pb was measured for ²⁷⁰Hs. Thus, ²⁷⁰Hs is the first nucleus for which experimental nuclear decay properties have become available for comparison with theoretical predictions of the N=162 shell stability.

Citations

• Self-consistent mean-field models for nuclear structure
• New results on elements 111 and 112
• Stability of heavy and superheavy elements
• The new isotope 270110 and its decay products 266Hs and 262Sg
• Measurements of cross sections and decay properties of the isotopes of elements 112, 114, and 116 produced in the fusion reactionsU<mml:mprescripts/><mml:none/>233,238,Pu<mml:mprescripts/><mml:none/>242, andCm<mml:mprescripts/><mml:none/>248+Ca<mml:mprescripts/><mml:none/>48

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• Superheavy Element Flerovium (Element 114) Is a Volatile Metal
• Island of stability [wikipedia]