Abstract
Half life for the emission of exotic clusters like 8Be, 12C, 16O, 20Ne, 24Mg and 28Si are computed taking Coulomb and proximity potentials as interacting barrier and many of these are found well within the present upper limit of measurement. These results lie very close to those values reported by Shanmugam et al using their cubic plus Yukawa plus exponential model (CYEM). It is found that 12C and 16O emissions from 116Ce and 16O from 118Ce are most favorable for measurement (T 1/2<1010 s). Lowest half life time for 16O emission from 116Ce stress the role of doubly magic 100Sn daughter in exotic decay. Geiger-Nuttall plots were studied for different clusters and are found to be linear. Inclusion of proximity potential will not produce much deviation to linear nature of Geiger-Nuttall plots. It is observed that neutron excess in the parent nuclei slow down the exotic decay process. These findings support the earlier observations of Gupta and collaborators using their preformed cluster model (PCM).
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A Sandulescu, D N Poenaru and W Greiner, Fiz. Elem. Chastits At. Yadra II, 1334 (1980) [Sov. J. Part. Nucl. II, 528 (1980)]
R K Gupta, in Heavy elements and related new phenomena edited by R K Gupta and W Greiner (World Scientific Pub., Singapore, 1999) vol II, p. 730
H J Rose and G A Jones, Nature (London) 307, 245 (1984)
R Blendowske, T Fliessbach and H Walliser, Z. Phys. A339, 121 (1991)
S S Malik, S Singh, R K Puri, S Kumar and R K Gupta. Pramana — J. Phys. 32, 419 (1989)
R K Gupta, S Singh, R K Puri and W Scheid, Phys. Rev. C47, 561 (1993)
S Kumar and R K Gupta, Phys. Rev. C49, 1922 (1994)
S Kumar, D Bir and R K Gupta, Phys. Rev. C51, 1762 (1995)
D N Poenaru, W Greiner and R Gherghescu, Phys. Rev. C47, 2030 (1993)
Yu Ts Oganessian, V L Mikheev and S P Tretyakova, Report No. E7-93-57 (JINR, Dubna, 1993)
A Guglielmetti, R Bonetti, G Poli, P B Price, A J Westphal, Z Janas, H Keller, R Kirchner, O Klepper, A Piechaczek, E Roeckl, K Schmidt, A Plochocki, J Szerypo and B Blank, Phys. Rev. C52, 740 (1995)
A Guglielmetti, B Blank, R Bonetti, Z Janas, H Keller, R Kirchner, O Klepper, A Piechaczek, A Plochocki, G Poli, P B Price, E Roeckl, K Schmidt, J Szerypo and A J Westphal, Nucl. Phys. A583, 867c (1995)
K P Santhosh and Antony Joseph, Pramana — J. Phys. 55, 375 (2000)
J Blocki, J Randrup, W J Swiatecki and C F Tsang, Ann. Phys. (N.Y.) 105, 427 (1977)
J Blocki and W J Swiatecki, Ann. Phys. (N.Y.) 132, 53 (1981)
Y J Shi and W J Swiatecki, Nucl. Phys. A438, 450 (1985)
D N Poenaru, M Ivascu, A Sandulescu and W Greiner, Phys. Rev. C32, 572 (1985)
S S Malik and R K Gupta, Phys. Rev. C39, 1992 (1989)
G Shanmugam, G M Carmel, Vigila Bai and B Kamalaharan, Phys. Rev. C51, 2616 (1995)
D N Poenaru, D Schnabel, W Greiner, D Mazilu and I Cata, Report No. GSI-90-28, 1990.
S Kumar, J S Batra and R K Gupta, J. Phys. G: Nucl. Part. Phys. 22, 215 (1996)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Santhosh, K., Joseph, A. Exotic decay in cerium isotopes. Pramana - J Phys 58, 611–621 (2002). https://doi.org/10.1007/s12043-002-0019-2
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/s12043-002-0019-2