Structure and direct decay of Giant Monopole Resonances

Details Structure and direct decay of Giant Monopole Resonances Structure and direct decay of Giant Monopole Resonances

2011-05-26

arxiv.org/abs/1105.5217v1

Physics

Nuclear Physics

Nuclear Theory

7 pages, 6 figures

Scientific paper

We study structure and direct decay of the Giant Monopole Resonance (GMR) using the Time-Dependent Energy-Density-Functional method in the linear response regime in a few doubly-magic nuclei. In these calculations, a proper treatment of the continuum, through the use of large coordinate space, allows for a separation between the nucleus and its emitted nucleons. The microscopic structure of the GMR is investigated with the decomposition of the strength function into individual single-particles quantum numbers. A similar microscopic decomposition of the spectra of emitted nucleons by direct decay of the GMR is performed. Shifting every contribution by the initial sinle-particle energy allows to reconstruct the GMR strength function. The RPA residual interaction couples bound 1-particle 1-hole states to unbound ones, allowing for the total decay of the GMR.

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