Nuclear Structure and Dynamics - NSD 2019

Session

Session VI

6

14 May 2019, 11:10

Venice, Centro Culturale Don Orione Artigianelli

Conveners

Session VI

• Alberto Stefanini (LNL)

42. Fusion hindrance in light- and heavy-systems

Prof. Giovanna Montagnoli (PD)

14/05/2019, 11:10

Invited

The phenomenon of hindrance in sub-barrier heavy-ion fusion will be introduced and several experimental evidences show that it is a general phenomenon. It is recognized in many cases by the trend of the logarithmic slope of excitation function and of the S factor at low energies. The comparison with standard Coupled-Channels calculations is a more quantitative evidence for its...

58. Fusion in massive stars: Pushing the 12C+12C cross-section to the limits with the STELLA experiment at IPN Orsay

David Jenkins Jenkins (University of York)

14/05/2019, 11:40

Oral

The 12C+12C fusion reaction is one of the key reactions governing the evolution of massive stars as well as being critical to the physics underpinning various explosive astrophysical scenarios [1]. Our understanding of the 12C+12C reaction rate in the Gamow window – the energy range relevant to the different astrophysical scenarios – is presently confused. This is due to the large number of...

185. Finite-temperature nuclear response in the relativistic framework

Prof. Elena Litvinova (Western Michigan University and National Superconducting Cyclotron Laboratory, Michigan State University)

14/05/2019, 12:00

Oral

Recent developments of the relativistic nuclear field theory on the finite-temperature formalism will be presented. The general non-perturbative framework, which advances the nuclear response theory beyond the one-loop approximation, is formulated in terms of a closed system of non-linear equations for the two-body Green’s functions. This provides a direct link to ab initio theories and allows...

98. Enhanced monopole and dipole transitions in medium-heavy nuclei induced by alpha custer structures

Makoto Ito (Department of Pure and Applied Physics, Kansai University)

14/05/2019, 12:20

Oral

$\alpha$ cluster structures are well known to appear in excited states of lighter mass nuclei. According to recent studies, the isoscalar monopole (IS0) and dipole excitations (IS1) are considered to be important probes to identify the alpha cluster struture. We have calculated the continuum IS0 and IS1 transitions in the $^{44}$Ti = $\alpha$ + $^{40}$Ca system. We will demonstrate that the...

125. Mixing time dependent mean-field trajectories to describe the dynamics of the collision between two superfluid nuclei

David REGNIER (CNRS, IPN Orsay)

Oral

Recently the role of pairing correlations on the two particles transfer channel has received a surge of interest as new highly accurate measurements have been achieved [1,2]. The Hartree-Fock-Bogoliubov (HFB) theory accurately grasps superfluidity by explicitly breaking the particle number symmetry. However, a precise description of phenomena like the particle transfer during heavy-ion...