Evidence for high excitation energy resonances in the 7 alpha disassembly of $^{28}$Si

Authors :: Cao, X. G.
Kim, E. J.
Schmidt, K.
Hagel, K.
Barbui, M.
Gauthier, J.
Wuenschel, S.
Giuliani, G.
Rodriguez, M. R. D.
Kowalski, S.
Zheng, H.
Huang, M.
Bonasera, A.
Wada, R.
Zhang, G. Q.
Wong, C. Y.
Staszczak, A.
Ren, Z. X.
Wang, Y. K.
Zhang, S. Q.
Meng, J.
Natowitz, J. B.
Source :: Phys. Rev. C 99, 014606 (2019)
Publication Year :: 2018
Abstract: The excitation function for the 7 alpha de-excitation of $^{28}$Si nuclei excited to high excitation energies in the collisions of 35 MeV/nucleon $^{28}$Si with $^{12}$C reveals resonance structures that may indicate the population of high spin toroidal isomers such as those predicted by a number of recent theoretical calculations. This interpretation is supported by extended theoretical analyses.<br />Comment: 11 pages, 5 figures

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