• Citer

Nonmicroscopic and microscopic descriptions of condensate states in the 12C and 16O nuclei

par Dufour, Marianne;Lazauskas, Rimantas;Descouvemont, Pierre
Référence Journal of physics. Conference series, 436, 1, 012005
Publication Publié, 2013

Article révisé par les pairs

• Accès en ligne
• Détails
• Contenu
• Statistiques

Résumé :

12C and 16O nuclei are investigated within nonmicroscopic and microscopic theoretical frameworks, respectively. For the 12C nucleus viewed as a 3α system, 3-body Faddeev equations are solved in configuration space. Positions of the resonant states are obtained through the complex scaling method. We show that the nonlocal potential developed by Z. Papp and S. Moszkowski appears to be well-adapted to study 3α system. In particular, we show evidence for 12C states of positive-parity which share common features with the well-known 0 +2 Hoyle state, currently interpreted as a condensate state. For the 16O nucleus, a 12C+α multicluster generator coordinate method is used to solve the 16-nucleon problem. The 16O nucleus is described by four α cluster. We comment the difficulty to interpret broad resonant states. The phase-shift analysis of the 12C(02+) + α channel reveals the existence of two 0+ states located above the 4α threshold which can be interpreted as condensate states.