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Zeitschrift für Physik A Atoms and Nuclei

, Volume 315, Issue 1, pp 49–55 | Cite as

Alpha decay of neutron-deficient rhenium and osmium isotopes

  • U. J. Schrewe
  • E. Hagberg
  • H. Schmeing
  • J. C. Hardy
  • V. T. Koslowsky
  • K. S. Sharma
Nuclei

Abstract

Neutron-deficient osmium and rhenium isotopes were produced by bombarding an enriched144Sm target with beams of27Al and28Si. Previously reported decay data concerning168,169,170Os were confirmed. Three newα groups, observed in the144Sm+27Al reaction, were assigned to the decay of166,167,168Re based on excitation functions,α-energy systematics and theoretical half-life predictions. Their decay properties are:
$$\begin{gathered} {}^{166}\operatorname{Re} , E_\alpha = 5,372 (10) keV, T_{1/2} = 2.8 (3) s; \hfill \\ {}^{167}\operatorname{Re} , E_\alpha = 5,136 (8) keV, T_{1/2} = 6.1 (2) s and \hfill \\ {}^{168}\operatorname{Re} , E_\alpha = 4,894 (10) keV, T_{1/2} = 6.9 (8) s. \hfill \\ \end{gathered}$$
It is proposed that twoα groups, observed in the144Sm+28Si reaction, originate from isomeric states in168,169Re. Our measured data for the isomeric states are:
$$\begin{gathered} {}^{168m}\operatorname{Re} , E_\alpha = 5,250 (10) keV, T_{1/2} = 6.6 (15) s and \hfill \\ {}^{169m}\operatorname{Re} , E_\alpha = 5,050 (10) keV, T_{1/2} = 12.9 (11) s. \hfill \\ \end{gathered} $$

Keywords

Elementary Particle Measured Data Osmium Rhenium Excitation Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • U. J. Schrewe
    • 2
  • E. Hagberg
    • 2
  • H. Schmeing
    • 2
  • J. C. Hardy
    • 2
  • V. T. Koslowsky
    • 1
    • 2
  • K. S. Sharma
    • 2
  1. 1.University of TorontoTorontoCanada
  2. 2.Chalk River Nuclear LaboratoriesAtomic Energy of Canada LimitedChalk RiverCanada

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