Skip to main content
SpringerLink
Log in

Half-life for alpha-decay of147Sm

  • Published:
Il Nuovo Cimento A (1965-1970)

Summary

The alpha-decay of247Sm has been investigated in the Gran Sasso Underground Laboratory by using plates of CR-39 as detector in close contact with thin layers of natural samarium. The half-life of the decay process, measured for the first time under conditions free from cosmic-ray neutrons, is found to beT 1/2=(1.23±0.04)·1011y. The present result is compared with the half-life values reported in the literature and interpreted on the basis of a simple formalism for alpha-decay developed in the framework of penetration through a Coulomb-plus-centrifugal potential barrier.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. P. G. da Cugna: M.S. Thesis, Centro Brasiliero de Pesquísas Fisicas, Rio de Janeiro (1978).

  2. E. Bellotti:Nucl. Phys. News,1, 18 (1991).

    Article  Google Scholar 

  3. G. Hevesy andM. Pahl:Nature,131, 434 (1933).

    Article  ADS  Google Scholar 

  4. W. F. Libby:Phys. Rev.,46, 196 (1934).

    Article  ADS  Google Scholar 

  5. R. Hosemann:Z. Phys.,99, 405 (1936).

    Article  ADS  Google Scholar 

  6. P. Cuer andC. M. G. Lattes:Nature,158, 197 (1946).

    Article  ADS  Google Scholar 

  7. G. Beard andM. L. Wudenbeck:Phys. Rev.,95, 1245 (1954).

    Article  ADS  Google Scholar 

  8. G. E. Leslie:Nucl. Sci. Abstr.,10, 1099 (1956).

    Google Scholar 

  9. G. B. Beard andW. H. Kelly:Nucl. Phys.,8, 207 (1958).

    Article  Google Scholar 

  10. M. Karras:Ann. Acad. Sci. Fenn.,65, 601 (1960).

    Google Scholar 

  11. M. Karras andM. Nurmia:Nature,185, 601 (1960).

    Article  ADS  Google Scholar 

  12. P. M. Wright, E. P. Steinberg andL. E. Glendenin:Phys. Rev.,123, 205 (1961).

    Article  ADS  Google Scholar 

  13. R. D. Macfarlane andT. Kohman:Phys. Rev.,121, 1758 (1961).

    Article  ADS  Google Scholar 

  14. D. Donhoffer:Nucl. Phys.,50, 489 (1964).

    Article  Google Scholar 

  15. K. Valli, J. Aaltonen, G. Graeffe, M. Nurmia andR. Polyhoenen:Ann. Acad. Sci. Fenn.,177, 1 (1965).

    Google Scholar 

  16. M. C. Gupta andR. D. MacFarlane:J. Inorg. Nucl. Chem.,32, 3245 (1970).

    Google Scholar 

  17. H. G. de Carvalho, J. B. Martins andO. A. P. Tavares:Phys. Rev. C,34, 2261 (1986).

    Article  ADS  Google Scholar 

  18. H. G. de Carvalho, J. B. Martins, E. L. Medeiros andO. A. P. Tavares:Nucl. Instrum. Methods,197, 417 (1982).

    Article  Google Scholar 

  19. A. H. Wapstra andG. Audis:Nucl. Phys. A,432, 1 (1985).

    Article  ADS  Google Scholar 

  20. G. Gamow:Z. Phys.,51, 204 (1928).

    Article  ADS  MATH  Google Scholar 

  21. K. F. Smith andP. J. Unsworth:Proc. R. Soc. London, Ser A,86, 1249 (1965).

    Google Scholar 

  22. W. D. Myers:Nucl. Phys. A,204, 465 (1973).

    Article  ADS  Google Scholar 

  23. R. Hofstadter andR. Collard:Nuclear radii, inLandolt Bornstein Numerical Data and Functional Relationships in Science and Technology, edited byH. Shopper (Springer-Verlag, Verlui, 1967), Vol.2.

    Google Scholar 

  24. W. D. Myers andK.-H. Schmidt:Nucl. Phys. A,410, 61 (1983).

    Article  ADS  Google Scholar 

  25. B. A. Brown, C. R. Bronk andP. E. Hodgson:J. Phys. G,10, 1683 (1984).

    Article  ADS  Google Scholar 

  26. E. Wesolowski:J. Phys. G,10, 321 (1984).

    Article  ADS  Google Scholar 

  27. E. Wesolowski:J. Phys. G,11, 909 (1985).

    Article  MathSciNet  ADS  Google Scholar 

  28. W. D. Myers: inDroplet Model of Atomic Nuclei (IFI/Plenum, New York, N.Y., 1977).

    Book  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico-CNPq, Centro Brasileiro de Pesquisas Físicas-CBPF, Rua Dr. Xavier Sigaud 150, 22290, Rio de Janeiro, Brasil

    J. B. Martins

  2. Instituto de Fisica, Universidade do Estado de Rio de Janeiro-UERJ, Rua S. Francisco Xavier 524, 20550, Rio de Janeiro, Brasil

    J. B. Martins & M. Moreira Correa

  3. Dipartimento di Science e Tecnologie Chimiche, Università di Roma «Tor Vergata», Via O. Raimondo, 00173, Roma

    M. L. Terranova

  4. INFN, Sezione di Roma 2, Roma

    M. L. Terranova

Authors
  1. J. B. Martins
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. L. Terranova
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. M. Moreira Correa
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

The authors of this paper have agreed to not receive the proofs for correction.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Martins, J.B., Terranova, M.L. & Correa, M.M. Half-life for alpha-decay of147Sm. Nuov Cim A 105, 1621–1627 (1992). https://doi.org/10.1007/BF02731075

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02731075

PACS

Search

Navigation