Atomic nuclei decay modes by spontaneous emission of heavy ions

D. N. Poenaru, M. Ivaşcu, A. Sndulescu, and Walter Greiner
Phys. Rev. C 32, 572 – Published 1 August 1985
PDFExport Citation

Abstract

The great majority of the known nuclides with Z>40, including the so-called stable nuclides, are metastable with respect to several modes of spontaneous superasymmetric splitting. A model extended from the fission theory of alpha decay allows one to estimate the lifetimes and the branching ratios relative to the alpha decay for these natural radioactivities. From a huge amount of systematic calculations it is concluded that the process should proceed with maximum intensity in the trans-lead nuclei, where the minimum lifetime is obtained from parent-emitted heavy ion combinations leading to a magic (208Pb) or almost magic daughter nucleus. More than 140 nuclides with atomic number smaller than 25 are possible candidates to be emitted from heavy nuclei, with half-lives in the range of 10101030 s: He5, Be810, 11,12B, C1216, N1317, O1522, F1823, Ne2026, Na2328, Mg2330, Al2732, Si2836, P3139, S3242, Cl3545, Ar3747, 4049 K, Ca4251..., 4453 Sc, Ti4653, V4854, and 4955 Cr. The shell structure and the pairing effects are clearly manifested in these new decay modes.

  • Received 5 November 1984

DOI:https://doi.org/10.1103/PhysRevC.32.572

©1985 American Physical Society

Authors & Affiliations

D. N. Poenaru and M. Ivaşcu

  • Central Institute of Physics, 76900 Bucharest, Romania

A. Sndulescu

  • Joint Institute for Nuclear Research, 141 980 Dubna, USSR

Walter Greiner

  • Johann-Wolfgang-Goethe Universitat, D-6000 Frankfurt am Main, Federal Republic of Germany

References (Subscription Required)

Click to Expand
Issue

Vol. 32, Iss. 2 — August 1985

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×