EURICA Celebration and Collaboration Meeting

Session

Proton-rich nuclei

6 Sept 2016, 15:30

RIBF 201 (RIKEN)

23. Comparison of Tz=-2 beta decays with their mirror process on Tz=2 nuclei and search for isospin suppressed gamma and proton transitions

Prof. Yoshitaka Fujita (Research Center for Nuclear Physics (Toyonaka), Osaka Univeristy)

06/09/2016, 15:30

Oral

Isospin symmetry is based on the almost identical `behavior' of proton and neutron in terms of the strong interaction. However, due to isospin breaking interactions, including electro-magnetic interaction, slight asymmetry is associated with the nuclear structure of mirror nuclei. We have been studying Tz=\pm 1-->0, Tz=\pm 3/2-->\pm 1/2, and Tz=\pm 2-->\pm 1 mirror Gamow-Teller (GT)...

16. β-Decay Spectroscopy of 58Zn

Daiki Nishimura (Tokyo University of Science)

06/09/2016, 15:55

Oral

Gamow-Teller (GT) transitions play important roles in the studies of nuclear structure and nucleosynthesis. In the A = 58 isobars, the GT transition strengths to the states in 58Cu have been measured by high-resolution 58Ni(3He,t)58Cu reactions of ΔE ~ 30 keV. In order to discuss isospin symmetry in the A = 58 isobars, we studied the β decay of 58Zn. In addition, the β decay of 58Zn has the...

19. Study of isospin symmetry and isoscalar pn-pairing beyond the f7/2 shell

Dr Alejandro Algora (IFIC (CSIC-Univ. Valencia))

06/09/2016, 16:15

Oral

The main goal of the RIBF93 experiment is the study isospin symmetry and isoscalar pn-pairing in A~70 region. The experiment was performed in June 2015 as part of the EURICA campaign using the high intensity 78Kr beam provided by RIKEN. In this talk the motivations and the status of the analysis of the RIBF93 experiment will be presented. From the produced isotopes we have started the...

27. Beta-delayed proton emission of 73Sr and the effective half-life of 72Kr in stellar conditions

Mr Giuseppe Lorusso (RIKEN)

06/09/2016, 17:10

Oral

With a beta-decay half-life of 17s, 72Kr is a main waiting point for the rp-process in accreting neutron stars. The effective half-life in stellar environment could be, however, significantly reduced by the 72Kr(2p,g)74Sr reaction. To accurately model the rp-process flow in this reaction channel, the proton separation energy of the proton unbound nucleus 73Rb is required. In the experiment,...

20. New isotopes and 2p radioactivity of 67Kr

Dr Bertram Blank (CEN Bordeaux-Gradignan)

06/09/2016, 17:35

Oral

In pioneering experiments at GANIL and GSI, this 2p radioactivity was discovered in 2002 and meanwhile 45Fe, 48Ni and 54Zn are established 2p emitters. After these discovery experiments, the investigation of 2p radioactivity was continued with time-projection chambers to study the decay dynamics via measurements of the individual proton energies and the relative proton-proton emission...

14. Decay studies of high-spin isomers in the mass 90 region

Dr Paul Davies (University of York)

07/09/2016, 09:00

Oral

There are a significant number of isomeric states in the region close to the N=Z line and immediately below 100Sn, some of which may decay via particle emission. The study of these states yields vital experimental data on neutron-proton (np) pairing, provides a sensitive test for nuclear models, and input for understanding the astrophysical rp-process. This presentation will report on...

8. Decay Spectroscopy with EURICA in the region of Sn-100

Mr Daniel Lubos (Technische Universität München)

07/09/2016, 09:25

Oral

100Sn is the heaviest doubly magic N=Z nucleus. Calculations in the extreme single particle model predict a pure Gamow-Teller transition [1] and more recent realistic large scale shell model (LSSM) calculations also show that this transition is fragmented by less than 5% [2]. Thus, the transition 100Sn ! 100In is the ideal playground in order to derive the full transition strength...

7. Enhanced understanding of the structure of nuclei around 100Sn from gamma rays

Mr Jason Park (University of British Columbia / TRIUMF)

07/09/2016, 09:45

Oral

The doubly-magic 100Sn stands as a testing ground for many topics of nuclear structure, such as N = Z = 50 shell strength in proximity to the proton dripline, and evolution in the single particle structure and shell evolution. For decades, these have been actively investigated in both theoretical and experimental efforts. In order for modern large-scale shell model calculations with...