Skip to main content
Log in

Cold valleys in the radioactive decay of 248–254Cf isotopes

  • Published:
Pramana Aims and scope Submit manuscript

Abstract

Based on the concept of cold valley in cold fission and fusion, we have investigated the cluster decay process in 248–254Cf isotopes. In addition to alpha particle minima, other deep minima occur for S, Ar and Ca clusters. It is found that inclusion of proximity potential does not change the position of minima but minima become deeper. Taking Coulomb and proximity potential as interacting barrier for post-scission region, we computed half-lives and other characteristics for various clusters from these parents. Our study reveals that these parents are stable against light clusters and unstable against heavy clusters. Computed half-lives for alpha decay agree with experimental values within two orders of magnitude. The most probable clusters from these parents are predicted to be 46Ar, 48,50Ca which indicate the role of doubly or near doubly magic clusters in cluster radioactivity. Odd A clusters are found to be favorable for emission from odd A parents. Cluster decay model is extended to symmetric region and it is found that symmetric fission is also probable which stresses the role of doubly or near doubly magic 132Sn nuclei. Geiger-Nuttal plots were studied for various clusters and are found to be linear with varying slopes and intercepts.

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

Access this article

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. A Sandulescu, D N Poenaru and W Greiner, Fiz. Elem. Chasitst. At. Yadra. 11, 1334 (1980) (Sov. J. Part. Nucl. 11, 528 (1980)

    Google Scholar 

  2. H J Rose and G A Jones, Nature (London) 307, 245 (1984)

    Article  ADS  Google Scholar 

  3. R K Gupta and W Greiner, Int. J. Mod. Phys. 3, 335 (1994)

    ADS  Google Scholar 

  4. D N Poenaru, M Ivascu and A Sandulescu, J. Phys. G5, L169 (1979)

    ADS  Google Scholar 

  5. R Blendowske, T Fliessbach and H Walliser, Nucl. Phys. A464, 75 (1987)

    ADS  Google Scholar 

  6. D N Poenaru and W Greiner, Phys. Scr. 44, 427 (1991)

    Article  ADS  Google Scholar 

  7. D N Poenaru and W Greiner, J. Phys. G: Nucl. Part. Phys. 17, 443 (1991)

    Article  ADS  Google Scholar 

  8. D N Poenaru, W Greiner and E Hourani, Phys. Rev. C51, 594 (1995)

    ADS  Google Scholar 

  9. K P Santhosh and Antony Joseph, Pramana — J. Phys. 59, 599 (2002)

    Article  ADS  Google Scholar 

  10. R Bonetti and A Guglielmetti, in Heavy elements and related new phenomena edited by W Greiner and R K Gupta (World Scientific Publ., Singapore, 1999), vol. II, p. 643

    Google Scholar 

  11. R K Gupta, in Heavy elements and related new phenomena edited by W Greiner and R K Gupta (World Scientific Publ., Singapore, 1999), vol. II, p. 730

    Google Scholar 

  12. S Kumar and R K Gupta, Phys. Rev. C49, 1922 (1994)

    ADS  Google Scholar 

  13. S Kumar, D Bir and R K Gupta, Phys. Rev. C51, 1762 (1995)

    ADS  Google Scholar 

  14. S Kumar, J S Batra and R K Gupta, J. Phys. G: Nucl. Part. Phys. 22, 215 (1996)

    Article  ADS  Google Scholar 

  15. A V Ramayya, J H Hamilton, L K Perker, J Kormick, B R S Babu, T N Ginter, A Sandulescu, A Florescu, F Carstoiu, W Greiner, G M Ter-Akopian, Yu Ts Oganessian, A V Daniel, W C Ma, P G Varmette, J O Rasmussen, S J Asztalos, S Y Chu, K E Gregorich, A O Macchiavelli, R W Macleod, J D Cole, R Aryaeinejad, K Butler-Moore, M WDrigert, M A Stoyer, L A Bernstein, R W Lougheed, K J Moody, S G Prussin, S J Zhu, H C Griffin and R Donangelo, Nuovo Cimento A110, 1073 (1997)

    ADS  Google Scholar 

  16. F Gonnenwein, A Moller, M Croni, M Hesse, M Wostheiarich, H Faust, G Fioni and S Oberstedt, Nuovo Cimento A110, 1089 (1997)

    ADS  Google Scholar 

  17. A Moller, M Croni, F Gonnenwein and G Petrov, in Proceedings of the International Conference on Large Amplitude Motion of Nuclei edited by C Giardina (Brolo, Italy, 1996)

    Google Scholar 

  18. A Sandulescu, A Florescu, F Carstoiu, A V Ramayya, J H Hamilton, J K Hwang, B R S Babu and W Greiner, Nuovo Cimento A110, 1079 (1997)

    ADS  Google Scholar 

  19. A Sandulescu, A Florescu, F Carstoiu, W Greiner, J H Hamilton, A V Ramayya and B R S Babu, Phys. Rev. C54, 258 (1996)

    ADS  Google Scholar 

  20. A Sandulescu and W Greiner, J. Phys. G3, 489 (1977)

    Google Scholar 

  21. A V Ramayya, J H Hamilton, J K Hwang, L K Peker, J Kprmicki, B R S Babu, T N Ginter, A Sandulescu, A Florescu, F Carstoiu, W Greiner, G M Ter-Akopian, Yu Ts Oganessian, A V Daniel, W C Ma, P G Varmitte, J O Rasmussen, S J Asztalos, S Y Chu, K E Gregorich, A O Macchiavelli, R W Macleod, J D Cole, R Aryaeinejad, K Butler-Moore, M W Drigert, M A Stoyer, L A Bernstein, R W Lougheed, K J Moody, S G Prussin, S J Zhu, H C Griffin, and R Donangelo, Phys. Rev. C57, 2370 (1998).

    ADS  Google Scholar 

  22. K P Santhosh and Antony Joseph, Pramana — J. Phys. 55, 375 (2000)

    Article  ADS  Google Scholar 

  23. J Blocki, J Randrup, W J Swiatecki and C F Tsang, Ann. Phys. (N.Y.) 105, 427 (1977)

    Article  ADS  Google Scholar 

  24. J Blocki and W J Swiatecki, Ann. Phys (N.Y.) 132, 53 (1981)

    Article  ADS  Google Scholar 

  25. D N Poenaru, M Ivascu, A Sandulescu and W Greiner, Phys. Rev. C32, 572 (1985)

    ADS  Google Scholar 

  26. G Audi and A H Wapstra, Nucl. Phys. A595, 409 (1995)

    ADS  Google Scholar 

  27. Y J Shi and W J Swiatecki, Nucl. Phys. A438, 450 (1985); A464, 205 (1987)

    ADS  Google Scholar 

  28. S S Malik and R K Gupta, Phys. Rev. C39, 1992 (1989)

    ADS  Google Scholar 

  29. G Royer, J. Phys. G: Nucl. Part. Phys. 26, 1149 (2000)

    Article  ADS  Google Scholar 

  30. P B Price, R Bonetti, A Guglielmetti, C Chiesa, R Matheoud, C Migliono and K J Moody, Phys. Rev. C46, 1939 (1992)

    ADS  Google Scholar 

  31. M Balasubramaniam and R K Gupta, Phys. Rev. C60, 064316 (1999)

    Google Scholar 

  32. D N Basu, Phys. Rev. C66, 027601 (2002)

    Google Scholar 

  33. P Moller, J R Nix, W D Myers and W Swiatecki, At. Data Nucl. Data Tables 59, 185 (1995)

    Article  ADS  Google Scholar 

  34. S Wang, D Snowden-Ifft, P B Price, K J Moody and E K Hulet, Phys Rev. C39, 1647 (1989)

    ADS  Google Scholar 

  35. K P Santhosh and Antony Joseph, Pramana — J. Phys. 58, 611 (2002)

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to K. P. Santhosh.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Biju, R.K., Sahadevan, S., Santhosh, K.P. et al. Cold valleys in the radioactive decay of 248–254Cf isotopes. Pramana - J Phys 70, 617–632 (2008). https://doi.org/10.1007/s12043-008-0023-2

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12043-008-0023-2

Keywords

PACS Nos

Navigation