Abstract
Superdeformed nuclei at high-spin states in several mass regions are investigated within a microscopic approach using cranked Nilsson-Strutinsky formalism to explore the equilibrium deformations in the ground state and their evolution with spin. Shape transition from normal deformed to superdeformed states with increasing spin is studied and a clear picture of shape coexistence is provided. Detailed information on spin, rotational energy, dynamical moment of inertia, and rotational frequency of superdeformed rotational bands is presented and the general features of superdeformed bands in certain mass regions are outlined. Rotational energy and dynamical moment of inertia are compared with available experimental data and the impact of temperature and pairing on superdeformed configuration are discussed.
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T. Nikšić, D. Vretenar, P. Ring, and G. A. Lalazissis, Phys. Rev. C 65, 054320 (2002).
P. J. Twin et al., Phys. Rev. Lett. 57, 811 (1986).
D. T. Scholes et al., Phys. Rev. C 70, 054314 (2004).
M. Bender, P.-H. Heenen, and P.-G. Reinhard, Rev. Mod. Phys. 75, 121 (2003).
A. V. Afanasjev and I. Ragnarsson, Nucl. Phys. A 608, 176 (1996).
R. Wyss and W. Satula, Phys. Lett. B 351, 393 (1995).
T. Mizusaki, T. Otsuka, M. Honma, and B. A. Brown, Phys. Rev. C 63, 044306 (2001).
K. Hara and Y. Sun, Int. J. Mod. Phys. E 4, 637 (1995).
M. Bender, H. Flocard, and P.-H. Heenen, Phys. Rev. C 68, 044321 (2003).
J. Dudek, B. Herskind, W. Nazarewicz, et al., Phys. Rev. C 38, 940 (1988).
P. Taras et al., Phys. Rev. Lett. 61, 1348 (1988).
P. Cejnar, Phys. Rev. Lett. 90, 112501 (2003).
L. D. Landau and E.M. Lifshitz, Statistical Physics (Butterworth-Heinemann, Oxford, 2001), Vol. 5.
T. R. Rajasekaran and G. Kanthimathi, Eur. Phys. J. A 35, 57 (2008).
T. R. Rajasekaran and G. Kanthimathi, Acta Phys. Pol. B 39, 1391 (2008).
M. Rajasekaran, T. R. Rajasekaran, N. Arunachalam, and V. Devanathan, Phys. Rev. Lett. 61, 2077 (1988); M. Rajasekaran, N. Arunachalam, T. R. Rajasekaran, and V. Devanathan, Phys. Rev. C 38, 1926 (1988).
L. G. Moretto, Nucl. Phys. A 182, 641 (1972); 216, 1 (1973); 185, 145 (1972); 180, 337 (1972).
M. Rajasekaran, T. R. Rajasekaran, and N. Arunachalam, Phys. Rev. C 37, 307 (1988); T. R. Rajasekaran, S. Selvaraj, and S. Santhosh Kumar, Pramana 60, 75 (2003).
T. Bengtsson et al., Nucl. Phys. A 496, 56 (1989).
K. Lagergren et al., Phys. Rev. Lett. 87, 022502 (2001).
Yang Sun, Jing-ye Zhang, Mike Guidry, and Cheng-Li Wu, Phys. Rev. Lett. 83, 686 (1999).
J. Dobaczewski, J. Dudek, and R. Wyss, Phys. Rev. C 67, 034308 (2003).
G. G. Adamian, N. V. Antonenko, R. V. Jolos, et al., Phys. Rev. C 67, 054303 (2003).
W. Nazarewicz, S. Cwoik, J. Dobaczewski, and J.X. Saladin, Acta Phys. Pol. B 26, 189 (1995).
E. Ideguchi et al., Phys. Rev. Lett. 87, 222501 (2001); C. J. Chiara et al., Phys.Rev.C 67, 041303(R) (2003).
C. E. Svensson et al., Phys. Rev. Lett. 79, 1233 (1997); 82, 3400 (1999); Phys. Rev. C 63, 061301(R) (2001).
J. A. Sheikh, R. Palit, and S. Frauendorf, Phys. Rev. C 72, 041301(R) (2005).
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Kanthimathi, G., Boomadevi, N. & Rajasekaran, T.R. A microscopic study on shape transition and shape coexistence in superdeformed nuclei. Phys. Atom. Nuclei 75, 949–957 (2012). https://doi.org/10.1134/S106377881208008X
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DOI: https://doi.org/10.1134/S106377881208008X