Abstract
Cold reaction valleys in the radioactive decay of superheavy nuclei 286112, 292114, and 296116 are studied taking Coulomb and Proximity Potential as the interacting barrier. It is found that in addition to alpha particle, 8Be, 14C, 28Mg, 34Si, 50Ca, etc. are optimal cases of cluster radioactivity since they lie in the cold valleys. Two other regions of deep minima centered on 208Pb and 132Sn are also found. Within our Coulomb and Proximity Potential Model half-life times and other characteristics such as barrier penetrability, decay constant for clusters ranging from alpha particle to 68Ni are calculated. The computed alpha half-lives match with the values calculated using Viola-Seaborg-Sobiczewski systematics. The clusters 8Be and 14C are found to be most probable for emission with T 1/2 < 1030 s. The alpha-decay chains of the three superheavy nuclei are also studied. The computed alpha-decay half-lives are compared with the values predicted by Generalized Liquid Drop Model and they are found to match reasonably well.
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A. Sandulescu, D. N. Poenaru, W. Greiner, Fiz. Elem. Chastits At. Yadra 11, 1334 (1980) [Sov. J. Part. Nucl. 11, 528 (1980)].
R. K. Gupta, Fiz. Elem. Chastits At. Yadra 8, 717 (1977) [Sov. J. Part. Nucl. 8, 289 (1977)].
J. A. Maruhn, W. Greiner, and W. Scheid, Heavy-Ion Collisions (North-Holland, Amsterdam, 1980), Vol. 2, p. 399.
H. J. Rose and G. A. Jones, Nature 307, 245 (1984).
D. N. Poenaru, W. Greiner, and R. Gherghescu, Phys. Rev. C 47, 2030 (1993).
Yu. Ts. Oganessian, V. L. Mikheev, and S. P. Tretyakova, Report No. E7-93-57, JINR (Dubna, 1993).
Yu. Ts. Oganessian, Yu. A. Lazarev, V. L. Mikheev, et al., Z. Phys. A 349, 341 (1994).
A. Guglielmetti, B. Blank, R. Bonetti, et al., Nucl. Phys. A 583, 867c (1995).
A. Guglielmetti, R. Bonetti, G. Poli, et al., Phys. Rev. C 52, 740 (1995).
A. Sobiczewski, F. A. Gareev, and B. N. Kalinkin, Phys. Lett. 22, 500 (1966).
H. Meldner, Ark. Fys. 36, 593 (1967).
S. G. Nilsson, C. F. Tsang, A. Sobiczewski, et al., Nucl. Phys. A 131, 1 (1969).
U. Mosel and W. Greiner, Z. Phys. A 222, 261 (1969).
S. Ćwiok, J. Dobaczewski, P.-H. Heenen, et al., Nucl. Phys. A 611, 211 (1996).
K. Rutz, M. Bender, T. Bürvenich, et al., Phys.Rev.C 56, 238 (1997).
S. K. Patra, W. Greiner, and R. K. Gupta, J. Phys. G 26, L65 (2000).
S. B. Duarte, O. A. P. Tavares, M. Goncalves, et al., J. Phys. G 30, 1487 (2004).
B. K. Sharma, P. Arumugam, S. K. Patra, et al., J. Phys. G 32, L1 (2006).
R. K. Gupta, S. Kumar, R. Kumar, et al., J. Phys. G 28, 2875 (2002).
Yu. V. Denisov and S. Hofmann, Phys. Rev. C 61, 034606 (2000).
D. N. Poenaru, D. Schnabel, W. Greiner, et al., At. Data Nucl. Data Tables 48, 231 (1991).
S. Singh, R. K. Gupta, W. Scheid, and W. Greiner, J. Phys. G 18, 1243 (1992).
R. K. Gupta, S. Singh, R. K. Puri, and W. Scheid, Phys. Rev. C 47, 561 (1993).
R. K. Gupta, S. Singh, G. Münzenberg, and W. Scheid, Phys. Rev. C 51, 2623 (1995).
H. J. Fink, J. A. Marhun, W. Scheid, and W. Greiner, Z. Phys. A 268, 321 (1974).
S. S. Malik, S. Singh, R. K. Puri, et al., Pramana—J. Phys. 32, 419 (1989).
S. Kumar, M. Balasubramaniam, R. K. Gupta, et al., J. Phys. G 29, 625 (2003).
D. N. Poenaru, R. A. Gherghescu, and W. Greiner, arXiv: 1106.3271v1 [nucl-th].
K. P. Santhosh and A. Joseph, Pramana—J. Phys. 55, 375 (2000).
K. P. Santhosh, R.K. Biju, and A. Joseph, J. Phys.G 35, 085102 (2008).
K. P. Santhosh and R. K. Biju, J. Phys. G 36, 015107 (2009).
K. P. Santhosh, V. Bobby Jose, A. Joseph, and K. M. Varier, Nucl. Phys. A 817, 35 (2009).
M. G. Itkis et al., in Proceedings of the International Workshop on Fusion Dynamics at the Extremes, Dubna, 2000, Ed. by Yu. Ts. Oganessian and V. I. Zagrebaev (World Sci., Singapore, 2001), p. 93.
Y.-J. Shi and W. J. Swiatecki, Nucl.Phys. A 438, 450 (1985).
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).
D. N. Poenaru, M. Ivascu, A. Sandulescu, and W. Greiner, Phys. Rev. C 32, 572 (1985).
G. Audi, A. H. Wapstra, and C. Thibault, Nucl. Phys. A 729, 337 (2003).
A. Sobiczewski, Z. Patyk, and S. Ćwiok, Phys. Lett. B 224, 1 (1989).
V. E. Viola and G. T. Seaborg, J. Inorg. Nucl. Chem. 28, 741 (1966).
M. Horoi, A. Brown, and A. Sandulescu, nuclth/ 9403008v1.
K. P. Santhosh and R. K. Biju, Pramana—J. Phys. 72, 689 (2009).
G. Royer, J. Phys. G 26, 1149 (2000).
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Santhosh, K.P., Sabina, S. Cold reaction valleys in the radioactive decay of superheavy 286112, 292114, and 296116 nuclei. Phys. Atom. Nuclei 75, 973–983 (2012). https://doi.org/10.1134/S1063778812080108
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DOI: https://doi.org/10.1134/S1063778812080108