Excitation spectra of exotic nuclei in a self-consistent phonon-coupling model

Lyutorovich N, Tselyaev , Speth J, Reinhard PG (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Physical Review C - Nuclear Physics American Physical Society

Book Volume: 98

Article Number: 054304

Journal Issue: 5

DOI: 10.1103/PhysRevC.98.054304

Abstract

We explore giant resonance spectra and low-lying dipole strength in the Ni and Sn chains from proton-rich to very neutron-rich isotopes, relevant in astrophysical reaction chains. For the theoretical description we employ the random-phase approximation plus many-body effects through a phonon-coupling model with optimized selection of phonons. The nuclear force is based on the Skyrme-Hartree-Fock energy functional carried consistently through all steps of modeling. The main effect of phonon coupling is a broadening of the spectral distributions (collisional width). This broadening is particularly dramatic for low-lying dipole strength in very neutron-rich nuclei delivering there a qualitative change of the spectra.

Authors with CRIS profile

Paul-Gerhard Reinhard Naturwissenschaftliche Fakultät

Involved external institutions

Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE) Saint Petersburg State University (SPbU) / Санкт-Петербургский государственный университет (СПбГУ) RU Russian Federation (RU)

How to cite

APA:

Lyutorovich, N., Tselyaev, ., Speth, J., & Reinhard, P.-G. (2018). Excitation spectra of exotic nuclei in a self-consistent phonon-coupling model. Physical Review C - Nuclear Physics, 98(5). https://doi.org/10.1103/PhysRevC.98.054304

MLA:

Lyutorovich, N., et al. "Excitation spectra of exotic nuclei in a self-consistent phonon-coupling model." Physical Review C - Nuclear Physics 98.5 (2018).

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