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alpha-cluster states and 4alpha-particle bose condensate in 16O

Abstract : In order to explore the 4α-particle condensate state in 16O, we solve a full four-body equation of motion based on the 4α OCM (Orthogonality Condition Model) in a large 4α model space spanned by Gaussian basis functions. A full spectrum up to the 06+ state is reproduced consistently with the lowest six 0+ states of experimental spectrum. The 06+ state is obtained at 2 MeV above the 4α breakup threshold and has a dilute density structure, where the rms radius is more than 5 fm. The state has an appreciably large α condensate fraction 61%, and a highly amount of α+12C(02+) components, both of which are strong pieces of evidence of the state being the 4α condensate state.
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http://hal.in2p3.fr/in2p3-00424285
Contributor : Sophie Heurteau <>
Submitted on : Thursday, October 15, 2009 - 2:24:52 PM
Last modification on : Wednesday, September 16, 2020 - 5:04:16 PM

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Y. Funaki, T. Yamada, H. Horiuchi, G. Röpke, P. Schuck, et al.. alpha-cluster states and 4alpha-particle bose condensate in 16O. International Journal of Modern Physics A, World Scientific Publishing, 2009, 24, pp.1995-2002. ⟨10.1142/S0217751X09045558⟩. ⟨in2p3-00424285⟩

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