Nordic Winter Meeting on Physics @ FAIR

The talk will deal with an overview of the most recent developments in few-body physics regarding both nuclear structure and reactions. I will concentrate on ab-initio approaches, shortly describing the methods, some of their recent applications, and the perspectives of the field in view of the upcoming FAIR program.

The neutron dripline as being defined by the heaviest, proton-deficient, bound isotopes, determines the limit of nuclear stability at the neutron-rich side of the nuclear chart. Neutron or proton knockout from light dripline nuclei leads to the formation of unbound nuclear systems with extreme A/Z ratios, followed by their immediate decay. An experiment of this kind has been performed at GSI...

Recent experimental results using the breakup reactions at the new-generation RI-beam facility, RIBF, at RIKEN, will be presented. After briefly introducing the facility and showing some of the other highlights of the experiments at RIBF facility, we focus more on the breakup experiments. We measured the inclusive Coulomb and nuclear breakup of neutron drip line nuclei 22C and 31Ne[1]....

The reaction theory is a key tool to interpret experimental measurements and extract nuclear structure information. Traditional direct scattering formalisms developed to the stability line are inadequate to describe the scattering of stable from halo nuclei. With the delivery of high precision data at the future FAIR facility it is timely to have tight control of the theoretical...

In-beam tests of the Lund R3B calorimeter prototype have been carried out at The Svedberg Laboratory, Uppsala, Sweden using the 179 MeV proton beam. The detector consists of a cluster of 5x3 CsI(Tl) crystals representing a section of the barrel of the calorimeter. An energy resolution of ~0.5% has been achieved and gain corrected summing has been tested. Results from the test, including...

Halo nuclei are novel nuclear quantum systems which appear at the neutron drip line for light nuclei. They are well described by a core and one or two loosely bound valence neutrons orbiting around the core outside the range of the nuclear interaction. Therefore these structures are characterized by low separation energies and consequently very narrow momentum distributions of the core from...

In order to provide more data on the T=1 halo state of the six-nucleon system, in particular to investigate the importance of triton-triton and triton-3He clustering, we have made an experiment studying the 3He(3He,6Li*)\pi+ reaction at CELSIUS storage ring in Uppsala. The J\pi=0+, T=1 state at 3.56 MeV in 6Li is believed to have a similar structure as its analogue state; the two-neutron...

The inversion of states is known to happen both in 11Be and 12Be. This indicates a breaking of the N = 8 magic number in 12Be. The breaking has been studied in several different theoretical approaches. One of them [1] describes 12Be as a three particle cluster of 10Be and two neutrons, in analogy to 11Be, which can be described by a 10Be core with an orbiting neutron. The cluster model...

One of the current projects at the Department of Physics in the University of Jyväskylä is to explore more general forms of the Skyrme energy-density functional (EDF). The aim is to find new phenomenological terms which are sensitive to experimental data. In this context we have extended the Skyrme functional by including terms which contain higher orders of derivatives allowing for a...

The HISPEC (High-resolution in-flight spectroscopy) and DESPEC (De- cay spectroscopy) projects are part of the core experimental facility at FAIR. They are aimed at nuclear structure and reaction studies, using high- resolution gamma-ray spectroscopy as their main tool. HISPEC/DESPEC will get information on the force acting between the nucleons inside the nucleus, with special emphasis on...