Abstract.
We have studied the reactions \(^{28}\textrm{Si} + {}^{24}\textrm{Mg} \rightarrow {}^{52}\textrm{Fe}\rightarrow {}^{40}\textrm{Ca}^* + 3\alpha\) as well as the binary channel \(^{52}\textrm{Fe}\rightarrow{}^{40}\textrm{Ca}^* + {}^{12}\textrm{C}^*\), in order to search for deformed states, which form rotational bands in 40Ca. We observe positive- and negative-parity bands. The negative-parity band is proposed to be a partner of an inversion doublet with the positive-parity states being based on 4p-4h configurations. The properties of the positive-parity states are discussed on the basis of the shell model and the parity doublet on the basis of a cluster model with intrinsic reflection asymmetric shapes.
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References
W.J. Gerace, A.M. Green, Nucl. Phys. A 93, 110 (1967).
W.J. Gerace, A.M. Green, Nucl. Phys. A 123, 241 (1969).
S. Ohkubo, Prog. Theor. Phys. Suppl. 132, 1 (1998).
K. Ikeda, N. Tagikawa, H. Horiuchi, Prog. Theor. Phys. (Jpn.) Extra Vol. Suppl. 64 (1968).
G. Reidemeister, S. Ohkubo, F. Michel., Phys. Rev. C 41, 63 (1990).
H.T. Fortune, Phys. Rev. C 19, 756 (1979).
T. Yamaya, Nucl. Phys. A 573, 154 (1994).
T. Yamaya, Phys. Rev. C 53, 131 (1996).
E. Ideguchi, Phys. Rev. Lett. 87, 222501 (2001).
C.S. Svensson, Physics Division Annual Report, Argonne National Laboratory ANL-00/20, c63 (1999).
D. Rudolph, Phys. Rev. C 65, 03430 (2000).
C.S. Svensson, Phys. Rev. C 63, 061301 (2001).
J.C. Chiara, E. Ideguchi, M. Devlin, Phys. Rev. 67, 041303R (2003).
Tz. Kokalova, Thesis, FU Berlin July 2003, to be published.
D. Bazzacco, Proceedings of the International Conference on Nuclear Structure at High Angular Momentum, (Ottawa, 1992) Vol. 2, Report No. AECL 10613 (AECL Research, Ottawa, 1992) p. 376.
S. Thummerer, J. Phys. G 27, 1405 (2001).
H. Morgenstern, Z. Phys. A 313, 39 (1983).
K.S. Krane, R.M. Steffen, R.M. Wheeler, Nucl. Data Tables 11, 351 (1973).
P.M. Endt, Nucl. Phys. A 521, 1 (1990).
C.R. Gruhn, Phys. Rev. C 6, 915 (1972).
C.D. O’Leary, Phys. Rev. C 61, 064314 (2000).
E. Farnea, Phys. Lett. B 551, 56 (2003).
H. Horiuchi, K. Ikeda, Prog. Theor. Phys. 40, 277 (1968).
P.A. Butler, W. Nazarewicz, Rev. Mod. Phys. 68, 350 (1996).
W.J. Gerace, A.M. Green, Nucl. Phys. A 113, 641 (1968).
E.P. Lippincott, A.M. Bernstein, Phys. Rev. 163, 1170 (1967).
Y. Kanada-En’yo, arXiv:nucl-th/0208078 v1 30Aug2002.
S.W. Kikstra, Nucl. Phys. A 512, 425 (1990).
R. Middleton, Phys. Lett. B 39, 339 (1972).
J.J. Simpson, Phys. Rev. Lett. 35, 23 (1975).
P. Braun-Munzinger, Phys. Rev. Lett. 29, 1261 (1972).
T.M. Shneidman, Nucl. Phys. A 671, 119 (2000).
S. Torilov, Thesis 2003, St. Petersbirg University.
M. Lach, Eur. Phys. J. A 16, 309 (2003).
H. Schultheis, R. Schultheis, Phys. Rev. C 27, 1367 (1983).
T.M. Shneidman, Phys. Rev. C 67, 014313 (2003).
T. Sakuda, S. Ohkubo, Prog. Theor. Phys. Suppl. 132, 103 (1998).
S. Ohkubo, private communication.
T. Inakura, Nucl. Phys. A 710, 261 (2002).
R.V. Jolos, P. von Brentano, Phys. Rev. C 49, R2301 (1994).
R.V. Jolos, private communication.
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Communicated by D. Schwalm
Received: 2 May 2003, Revised: 23 September 2003, Published online: 20 January 2004
PACS:
21.10.-k Properties of nuclei; nuclear energy levels - 21.60.Gx Cluster models
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Torilov, S., Thummerer, S., Oertzen, W.v. et al. Spectroscopy of 40Ca and negative-parity bands. Eur. Phys. J. A 19, 307–317 (2004). https://doi.org/10.1140/epja/i2003-10126-y
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DOI: https://doi.org/10.1140/epja/i2003-10126-y