EVIDENCE FOR THE POSSIBLE EXISTENCE OF A LONG-LIVED SUPERHEAVY NUCLEUS WITH ATOMIC MASS NUMBER A = 292 AND ATOMIC NUMBER Z ∼ 122 IN NATURAL Th

@article{Marinov2008EVIDENCEFT,
  title={EVIDENCE FOR THE POSSIBLE EXISTENCE OF A LONG-LIVED SUPERHEAVY NUCLEUS WITH ATOMIC MASS NUMBER A = 292 AND ATOMIC NUMBER Z ∼ 122 IN NATURAL Th},
  author={A. Marinov and I. Rodushkin and Dietmar Kolb and A. Pape and Yoav Kashiv and Reinhard Brandt and R. V. Gentry and H. W. Miller},
  journal={International Journal of Modern Physics E-nuclear Physics},
  year={2008},
  volume={19},
  pages={131-140}
}
Evidence for the possible existence of a superheavy nucleus with atomic mass number A = 292 and abundance of about 1×10-12 relative to 232Th has been found in a study of natural Th using inductively coupled plasma-sector field mass spectrometry. The measured mass is different from any species with molecular mass of 292, but it matches the predictions for the mass of an isotope with atomic number Z = 122 or a nearby element. Its deduced half-life of t1/2 ≥ 108 y suggests that a long-lived… 

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