Alpha-particle decay of giant resonances in nickel reassessed

Multiple giant resonances in nuclei: their excitation and decay

The excitation of multiphonon giant resonances with heavy ions is discussed. The conventional theory, based on the use of the virtual photon number method in conjunction with the harmonic model is presented and its shortcomings are discussed. The recently developed model that invoke the Brink-Axel mechanism as an important contribution to the cross-section is discussed and compared to the conve...

Dilepton decay of giant resonances built on excited nuclei

The dilepton yield from the statistical decay of Giant Resonances built on excited nuclei is discussed. An overview is given of the research leading to the experimental determination of the Giant Monopole Resonance on excited states. The data obtained for Si and Ni, are presented, since they established so far the stringest experimental upper limits for the monopole strength of 0.45 and 4.3 nb,...

Decay of Nuclear Giant Resonances: Quantum Self-similar Fragmentation

Scaling analysis of nuclear giant resonance transition probabilities with increasing level of complexity in the background states is performed. It is found that the background characteristics, typical for chaotic systems lead to nontrivial multifractal scaling properties. The statistical study of spectra of quantum systems is almost as old as quantum mechanics. In this context, the random-matri...

Structure and direct decay of Giant Monopole Resonances

We study structure and direct decay of the Giant Monopole Resonance (GMR) at the Random Phase Approximation (RPA) level using the time-dependent energy density functional method in the linear response regime in a few doubly magic nuclei. 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 micro...

NEUTRON DECAY OF CHARGE EXCH.ANGE GIANT RESONANCES IN 117~120~n(3~e,