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Dilute Alpha-Particle Condensation in 12C and 16O

Abstract : Alpha particle condensation is studied in 12C and 16O with the orthogonality condition model (OCM). The OCM equation is an approximation of the equation of motion of α bosons based on microscopic theories. We demonstrate that 1) the Hoyle state (the 0+2 state at 7.65 MeV in 12C), located just above the 3α disintegration threshold has a 3α-particle condensate character, in which 3α particles occupy an identical 0S orbit with 70 % occupancy, forming a dilute gas-like configuration, and 2) the 0+6 state at Ex = 15.1 MeV in 16O, appearing above the 4α breakup threshold, is a strong candidate with dilute 4α structure of the condensate-type.
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Contributor : Sophie Heurteau <>
Submitted on : Monday, October 5, 2009 - 5:12:59 PM
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Y. Funaki, H. Horiuchi, A. Tohsaki, G. Röpke, P. Schuck. Dilute Alpha-Particle Condensation in 12C and 16O. International Journal of Modern Physics B, World Scientific Publishing, 2008, 22, pp.4545-4556. ⟨10.1142/S0217979208050292⟩. ⟨in2p3-00422101⟩



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