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Project List » Probing the nuclear structure at the limits of stability |
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Probing the nuclear structure at the limits of stability
proiecte.nipne.ro/pn2/148-projects.html
Acronym: TE-30
Contracting Authority: Executive Agency for Higher Education, Research, Development and Innovation Funding (UEFISCDI)
Number / Date of the contract: 30 / 2011-10-05
Resurse Umane
Project Manager: Ruxandra Borcea
Partners: -
Starting date / finishing date: 2011-10-05 / 0000-00-00
Project value: 920000 RON
Abstract: The present proposal is to study neutron-rich nuclei situated around the shell closures N=20: 26F and N=28: 43S and 44S. These regions are being intensely studied because it was observed that far from stability these "traditional" magic numbers are no longer valid. Experimental results on mass, nuclear radius and spectroscopy obtained in the three last decades have shown that the N=20 gap in energy was quite fragile in nuclei far from stability. Since then experimental efforts have been made at many research facilities worldwide to produce and study nuclei in this region.
The very first indirect hints of the vanishing of the N=28 gap were obtained by ?-decay, mass measurements and Coulomb excitation experiments. This subsequently triggered other theoretical works, in turn followed by new experiments. Recent experiments performed by our group have revealed the shape coexistence in 42Si and the existence of an isomeric state in 44S. This project is a continuation of these studies.
All the experiments described in this project are carried out at the Grand Accelerateur D'Ions Lourds (GANIL) international research facility in Caen, France, in the framework of an international collaboration between scientists from several institutions: NIPNE (Romania), JINR (Russia), INP (Czech Republic), GANIL (France), LPC (France), IPNO (France) and others.
The results obtained from these experiments will clarify the structural aspects in the region and will also provide experimental constraints to the existing theoretical models. At the same time, they serve as intermediate reference points in view of the new experimental facilities which will be available in the very near future. The expected experimental apparatus will give access to even more exotic systems, so far unreachable, and the existing experimental information, if accurate and sufficient, will be a key input for both theoretical models and future experimental endeavours.
Objectives:
THE STAGES OF THE PROJECT AND DELIVERY DATES
1. Experimental study of the 26F nucleus (2011-12-15) Results
2. Study of 43,44S by Coulomb excitation (2012-12-15) Results
3. Data analysis (2013-12-15) Results
4. Theoretical calculations, final analysis and submission foe publication (2014-10-01) Results
RESULTS
PUBLISHED ARTICLES
RESEARCH TEAM
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