3rd International Workshop on "State of the Art in Nuclear Cluster Physics" | |
The Hoyle state and its relatives | |
Neff, Thomas^1 ; Feldmeier, Hans^1,2 | |
GSI Helmholtzzentrum für Schwerionenforschung GmbH and ExtreMe Matter Institute EMMI, Planckstraße 1, Darmstadt | |
64291, Germany^1 | |
Frankfurt Institute for Advanced Studies, Max-von-Laue Straße 1, Frankfurt | |
60438, Germany^2 | |
关键词: Bound state; Cluster models; Many body wave functions; Model spaces; R-matrix method; Scattering state; Transition strengths; Triangular grid; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/569/1/012062/pdf DOI : 10.1088/1742-6596/569/1/012062 |
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来源: IOP | |
【 摘 要 】
The Hoyle state and other resonances in the continuum above the 3 α threshold in12C are studied in a microscopic cluster model. Whereas the Hoyle state is a very sharp resonance and can be treated reasonably well in bound state approximation, the other higher lying states require a proper treatment of the continuum. The model space consists of an internal region with 3 α particles on a triangular grid and an external region consisting of the8Be ground state and excited (pseudo)-states of8Be with an additional a. The microscopic R-matrix method is used to match the many-body wave function to the asymptotic Coulomb behavior of bound states, Gamow states and scattering states.8Be-α phase shifts are analyzed and resonance properties like radii and transition strengths are investigated.
【 预 览 】
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The Hoyle state and its relatives | 794KB | download |