EURORIB'15

At TRIUMF's Ion Trap for Atomic and Nuclear science (TITAN) mass measurements and in-trap decay spectroscopy of exotic nuclei are performed. The reach to even more exotic nuclei is often hampered or made impossible by strong isobaric contamination. Multiple-reflection time-of-flight mass spectrometers (MR-TOF-MS) have been shown to be ideal tools to overcome these limitations. Recently,...

At the FRS ion catcher facility, in-flight separated exotic ions are produced by projectile fragmentation or fission, thermalized in a cryogenic stopping cell (CSC), extracted by using DC and RF fields and transported though a versatile RFQ beamline to a multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) where mass measurements and isobar or isomer separation for mass selective...

The Dynamical Dipole mode (DD) is a pre-equilibrium large amplitude collective oscillation of protons against neutrons of the dinucleus formed in charge asymmetric heavy-ion collisions [1-4]. The study of its gamma decay gives us valuable information on the reaction dynamics and could shed light on the density dependence of the symmetry energy in the nuclear matter Equation of State at...

Our understanding of energy generation in stars and primordial and stellar nucleosynthesis strongly depends on reliable knowledge of nuclear reaction rates at low energies. However, at low energies, barrier penetration leads to a steep energy dependence of the cross section thus making the cross section measurements extremely difficult. Also, the influence of surrounding electrons is very...

In the framework of the research and development activities of the SPES project regarding the optimization of the radioactive beam production, a dedicated experimental study has been recently started in order to investigate the possibility of laser ionization in-source production of Germanium using a set of tunable dye lasers. Germanium is in fact one of the candidates beams to be accelerated...

Neutron rich exotic beams (6,8He, 8,9Li, 10,11Be, 13B, 16,17C, 68Ni), produced through in-flight fragmentation are available at LNS [1]. Using the CHIMERA detector [2,3], recently implemented by the FARCOS array [4] we have begun various experiments to study elastic scattering transfer and break-up reactions. The kinematical coincidence method was used to extract high resolution angular...

High-resolution measurements with relativistic fragments present a challenge for in-flight rare isotope facilities such as the future Super-FRS at FAIR. An elegant way to overcome the large longitudinal and transverse emittance of high-energy beams is to use a dispersion-matched ion-optical mode with an Analyser part before the secondary target, coupled with a following Spectrometer part. One...

In the context of the forthcoming next generation of Radioactive Ion Beams (RIBs) facilities based on the Isotope Separation On Line (ISOL) method, the development of production targets capable of dissipating the high power deposited by the primary beam is a major challenge. EURISOL and ISOL@MYRRHA are examples of such facilities. Within this framework, the concept of a high-power target...

An in-flight fragment separator has been designed for the rare isotope science project (RISP) in Korea to provide rare isotope beams with worldwide users. The beam energy of 238U is 200 MeV/u in the initial phase and will be increased to 400 MeV/u so that we set the maximum rigidity to be around 9.5 Tm. The primary beam power is 400 kW at maximum, which is reflected in the radiation heating...

Laser spectroscopy of the heaviest elements allows the study of the evolution of relativistic effects on their atomic structure. In addition, nuclear properties such as spins and nuclear moments can be obtained. In our experiments at the GSI we exploit the Radiation Detected Resonance Ionization Spectroscopy in a buffer-gas filled stopping cell and use a two-step photoionization process to...

The ILIMA measurements in the isochronous CR ring at FAIR The ILIMA collaboration as a part of the NUSTAR programme aims at investigating Isomers and measure LIfetimes and MAsses in the storage rings of FAIR. In the first construction phase the CR storage ring without an electron cooler is foreseen. Instead it is designed to run an isochronous mode which can be used for IMS (isochronous mass...

The Nuclear physics collaboration in FAIR (Nuclear Structure, Astrophysics and Reactions) will be operating a rather diverse type of experiments ranging from experiments in storage rings, reactions at relativistic energies to mass measurements in Penning traps. All of those experiments are dependent on the high-intensity radioactive beams delivered by the new Super-Fragment Separator...

The facility for the exotic 6He nuclei production in the 7Li(γ, p)6He reaction was built in the Flerov Laboratory of Nuclear Reactions in Dubna. As the target material the fine salt of Li2CO3 and LiF were used. The ECR ion source was included in the facility to ionize the 6He atoms and produce the heavy ion beam. The measured value of the 6He at the entrance of the ECR source was (1,7±0,2)...

Recently multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) have been established as important tools for direct mass measurements and for isobar separation at several facilities for research on exotic nuclei. They combine short measurement cycles with high mass resolving power. The MR-TOF-MS is part of the FRS Ion Catcher, which is a test facility for the future Low-Energy...

The DESIR facility at SPIRAL2 is dedicated to low energy nuclear studies using exotic nuclei currently not accessible. Nuclear structure and astrophysics studies will be performed on these nuclides using beta decay spectroscopy, laser spectroscopy and trap-based experiments. In order to achieve the targeted precision, extremely pure samples of these exotic nuclides are needed. PIPERADE, a...

Quasi-free knockout reactions in inverse kinematics offer great opportunities to probe the mean-field properties of imbalanced nuclei. We have developed a reaction model for quasi-free A(p, pN )B reactions with unstable nuclei. Such a model makes it possible to connect experimental data from (p, pN ) measurements in inverse kinematics at radioactive-beam facilities [1], to the mean-field...

Featuring excellent sensitivity and spatial resolution a nuclear track emulsion (NTE) maintains a position of universal and inexpensive detector for survey and exploratory research (http://becquerel.jinr.ru/) in microcosm physics. Use of this classical technique on beams of modern accelerators and reactors turns out highly productive. In a number of important tasks completeness observations...

The influence of the nuclear tensor force was investigated via the 16O(p,d) reaction[1] with the fragment separator FRS at different energies from 400 MeV/u to 1200 MeV/u. The important observable is the deuteron spectrum reflecting the ground state and various excitation levels of 15O. The required high momentum resolution was achieved by operating the FRS as a spectrometer in an overall...

Low-energy Coulomb excitation provides a well-understood means of exciting atomic nuclei, allowing the study of the e.m. properties (such as transition probabilities and quadrupole moments) of low-lying excited levels. In particular, for collective excitations, these properties are very sensitive to the underlying nuclear shape and their experimental study contributes significantly to the...

At the Low-Energy-Branch (LEB) of the Super-FRS at FAIR, projectile and fission fragments will be produced at relativistic energies, separated in-flight, range-bunched, slowed-down and thermalized in a cryogenic stopping cell filled with ultra-pure helium gas, featuring enhanced cleanliness and high extraction efficiencies. Thermalised ions are extracted out of the stopping cell using a...

After 20 years of successful ISOLDE operation at the PS-Booster at CERN, a major upgrade of the facility, the HIE-ISOLDE (High Intensity and Energy ISOLDE) project was launched in 2010. It is divided into three parts; a staged upgrade of the REX post-accelerator to increase the beam energy from 3.3 MeV/u to 10 MeV/u using a super-conducting linac, an evaluation of the critical issues...

We use a microscopic self-consistent relativistic mean field theory with effective interactions to calculate the Lambda-hyperon separation energies of different hypernuclei. Such a microscopic framework has already been found to be successful in explaining different properties of normal nuclei. Calculations for hypernuclei are found to be in excellent agreement with the experimental data...

The structure of neutron deficient (N<82) light nuclei lying far from β-stability line are one of the most challenging and interesting area of the nuclear physics. These nuclei are short lived and the information on their nuclear spectra has become available only recently from the in-beam nuclear reaction experiments. The level pattern of these nuclei differs basically from (N>82) nuclei and...

GRIFFIN [1], the Gamma-Ray Infrastructure For Fundamental Investigations of Nuclei is the newly commissioned decay spectroscopy array located at TRIUMF, Canada’s National Laboratory for Nuclear and Particle Physics, in Vancouver, Canada. GRIFFIN consists of 16 large-volume hyper-pure germanium (HPGe) clover detectors assisted by a custom-built digital data acquisition system. A suite of...

SPES (Selective Production of Exotic Species) is a project approved and financed by INFN aimed to produce neutron-rich Radioactive Ion Beams (RIBs) according to the ISOL technique. The core of the SPES facility, now in construction phase, is constituted by the TIS (Target - Ion Source) system that converts a stable proton beam into a RIB. The SPES production target is an innovative multi-foil...

Delayed charged particle spectroscopy following the β decay of nuclei at, or near, the proton drip line provides an excellent technique for studying the evolution of nuclear structure and testing isospin symmetry in weakly bound nuclei. The β decays of 22,23Si are particularly attractive cases since these are the lightest (bound) nuclei with ground-state isospin projections of Tz=-3 and...