Nuclear Reactions with a Realistic Nuclear Interaction Using a Square Integrable Basis(YKIS2011 papers,Frontier Issues in Physics of Exotic Nuclei)

概要

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We discuss the controversy of the photoabsorption cross section of ^4He based on a full four-body calculation. The continuum is properly treated by taking the following two approaches: one is the complex scaling method and the other is the microscopic R-matrix method, which are widely used method for describing continuum state with a square integrable basis. The wave function of the ground state is obtained accurately using an explicitly correlated basis. Four-body final states are expressed in a superposition of many basis functions including configurations dividing ^4He into 3+1 and 2+1+1 partitions explicitly, which are important for describing the low-lying photoabsorption cross section. The results agree with the other theoretical works and some measurements but disagree with one of the recent data.
2012-10-22