Dr
Roger Caballero-Folch
(TRIUMF)
01/06/2017, 16:05
Invited Presentation
β-decay is the most common way for neutron-rich nuclei to reach the stability valley. However, when the neutron separation energy is lower than the Qβ-value, β-delayed neutron emission [1] takes over a dominant role in these β-decays, decreasing the mass of the nucleus by one unit (β1n) or more in the case of multiple neutron emission (β2n, β3n, ...). The study of the neutron branching ratios,...
Mr
Jaime Benito García
(Universidad Complutense de Madrid)
01/06/2017, 16:20
Invited Presentation
During the last two decades there has been a substantial effort directed to gather information about the region around the neutron-rich 132Sn[1]. Nuclei in the regions of shell closures with a large N/Z ratio such as 132Sn are of great interest to test nuclear models and provide information about single particle states. More stringent tests of the models can be provided by the reduced...
Dr
Shintaro Go
(University of Tennessee)
01/06/2017, 16:35
Invited Presentation
First experimental studies of the doubly magic nucleus 78Ni became possible [1,2] and are needed to provide critical data to test robustness of the nuclear shell structure and model the astrophysical r-process [3]. One way to study the structure of neutron-rich nickel isotopes (Z = 28) is to investigate decays of the respective cobalt precursors (Z = 27). This method has been successfully...
Dr
Filip Kondev
(Argonne National Laboratory)
01/06/2017, 16:50
Invited Presentation
Properties of deformed, neutron-rich nuclei in the A~160 region are important for achieving a better understanding of the nuclear structure in this region where little is known owing to difficulties in the production of these nuclei at the present RIB facilities. These properties are essential ingredients in the interpretation of the rare-earth peak at A~160 in the r-process abundance...
Dr
Vandana Tripathi
(Department of Physics, Florida State University, Tallahassee Fl 32306, USA)
01/06/2017, 17:05
Invited Presentation
Understanding the evolution of shell structure as a function of N/Z is one main focus of current nuclear structure studies. The force behind the migration of orbitals is the monopole part of the tensor interaction. Refinement of this monopole term to increase the predictive powers of shell model calculations underscores the need for more experimental information, specially for excited states...
Dr
Hiroki Nishibata
(RIKEN Nishina Center)
01/06/2017, 17:20
Invited Presentation
One of the long-standing subjects of nuclear physics is the shape transition of the ground state far from the beta-stability line. In particular, neutron-rich nuclei with neutron number close to the neutron magic number N = 20, so-called the “island of inversion”, have attracted much attention. In this mass region of the nuclear chart, it was suggested that the ground states are rather...
Dr
Kenneth Whitmore
(Simon Fraser University)
01/06/2017, 17:35
Invited Presentation
The region of neutron-rich tin isotopes near A = 130 is of great interest to nuclear structure. In particular, 132Sn with 50 protons and 82 neutrons represents a doubly magic nucleus and provides an essential benchmark for the shell model far from stability. Understanding the structure of this nucleus provides a foundation to comprehend the single-particle nature of excited states in...
Nikita Bernier
(TRIUMF/UBC)
01/06/2017, 17:50
Invited Presentation
The neutron-rich Cadmium isotopes around $A=130$ are of special interest to both nuclear structure and astrophysics. Situated near the well-known magic numbers at $Z=50$ and $N=82$, these nuclei are prime candidates to study the evolving shell structure observed in exotic nuclei. Additionally, the extra binding energy observed around the nearby doubly-magic $^{132}$Sn has direct correlations...
Luis M Fraile
(Universidad Complutense de Madrid)
01/06/2017, 18:05
Invited Presentation
The nucleus 68Ni is the portal to the understanding of the modification of shell structure in the Z=28 and N=40 region and the appearance of collective phenomena. In spite of showing some of the characteristics of a doubly magic nucleus, the two-neutron separation energy does not show evidence for an enhanced N=40 harmonic oscillator shell gap, and collectivity emerges for 66Fe and 64Cr with...