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Nuclear Seminars 2015 Spring


  Title: Covariant density functional theory: the journey across
three-dimensional nuclear landscape
  Speaker: Prof. Anatoli Afanasjev
  Institute: Mississippi State University
  Date: Monday, April 20, 2015
  Time: 4:00 - 5:00 pm EST
  Place: Nieuwland Science Hall, Room 124

  Abstract:

Covariant density functional theory (CDFT) is well established theoretical tool for the description of nuclear systems. In CDFT, the nucleus is described as a system of nucleons which interact via the exchange of different mesons. In my talk, I will concentrate on a number of topics which have been addressed or satisfactorily resolved within its framework only recently. First, I will start from the global assessment of the description of ground state observables of even-even nuclei in the CDFT framework in the (proton number Z, isospin) plane of nuclear landscape [1]. Calculated binding energies, the deformations, radii, neutron skins, two-neutron separation energies and the positions of the proton-drip line will be compared in asystematic way with available experimental data. Such comparison allows to establish theoretical uncertainties in the description of physical observables in known regions of nuclear chart and extrapolate them towards neutron-drip line. I will also discuss the uncertainties in the position of two-neutron drip line and their sources [1,2]. A recent reassessment of the situation in the region of superheavy nuclei will also be presented.
The physics is not limited to spin zero and ground state observables of even-even nuclei. Single-particle degrees of freedom, rotational excitations and fission are examples which go beyond that limit. The analysis of the single-particle properties inspherical and deformed nuclei will be presented. The angular momentum represents the third dimension of nuclear landscape. Thus, the rotational response of nuclei will be illustrated by a recent detailed study of even-even and odd-massactinides [3]. Finally, the results of the study of fission barriers in actinides and superheavy nuclei will be presented.
It is clear that the current generation of covariant energy density functionals has some limitations. The possibilities of their extension and thus the improvement of the description of experimental data and the decrease of theoretical uncertainties will be discussed.
[1] S. E. Agbemava, A. V. Afanasjev, D. Ray and P. Ring, Phys. Rev. C89, 054320 (2014).
[2] A. V. Afanasjev, S. E. Agbemava, D. Ray and P. Ring, Phys. Lett. B 726, 680 (2013). [3] A. V. Afanasjev and O. Abdurazakov,Phys. Rev. C88, 014320 (2013).


Topic

Date

Speaker

Investigation of transitional rare earth
nuclei using light ion reactions: Nuclear Structure and Surrogates
January 19 Prof. Cornelius Beausang
University of Richmond
Stellar Neutron Sources
and s-Process in Massive Stars
January 26 Rashi Talwar
University of Notre Dame
Low energy nuclear physics research at LLNL February 3 Tuesday Dr. Jason Burke
Lawrence Livermore National Lab
Measurement of the plasma astrophysical
S factor for the 3He(d, p)4He reaction in exploding molecular clusters
February 9 Dr. Marina Barbui
Texas A&M University
Inelastic Neutron Scattering Studies Relevant to Neutrinoless Double-Beta Decay February 16 Dr. Benjamin Crider
NSCL/MSU
Study of fission dynamics and nuclear viscosity using particle emission as a probe February 23 Dr. Yogesh Gupta
University of Notre Dame
Proton-capture reactions in thermonuclear supernovae and the p process February 26 Thursday 2pm Dr. Kerstin Sonnabend
Goethe University Frankfurt, Germany
Beta decay of deformed nuclei with the
proton-neutron finite amplitude method
March 2 Thomas Shafer
University of North Carolina
Spring Break March 9
Jet Modification and the Question of Quark Gluon Plasma in Small Collision Systems March 16 Prof. Justin Frantz
Ohio University
Optically Probing Nuclei Trapped in Cryogenic Solids: Opportunities for Nuclear Physics March 30 Prof. Jaideep Singh
NSCL/MSU
Easter Break April 6
The TITAN facility at TRIUMF: precision experiments with ion traps April 13 Dr. Ania Kwiatkowski
TRIUMF, Canada
Covariant density functional theory: the journey across three-dimensional nuclear landscape April 20 Prof. Anatoli Afanasjev
Mississippi State University
The photonuclear cross section of Boron-10 from the No Core Shell Model April 27 Dr. Michael Kruse
Lawrence Livermore National Lab
TBA May 4 Prof. Mihai Horoi
Central Michigan University
Electromagnetic processes in few-nucleon systems with the Chiral Effective Field Theory May 18 Dr. Dagmara Rozpedzik
Jagiellonian University, Krakow, Poland


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