S. Essabaa

Release properties of UCx and molten U targets

Abstract The release properties of UC x and molten U thick targets associated with a Nier–Bernas ion source have been studied. Two experimental methods are used to extract the release time. Results are presented and discussed for Kr, Cd, I and Xe.

Recent studies to improve release properties from thick isotope separator on-line fission targets

In the framework of the PARRNe program (Production d’Atomes Radioactifs Riches en Neutrons) of IPN Orsay, various techniques are currently used to characterize the release properties of elements of interest from a UCX target. On-line studies have been carried out with two plasma ion sources: a Nier–Bernas and a hot plasma ISOLDE-type (the ISOLDE collaboration kindly supplied us a MK5 ion source for these studies). In parallel, the analysis of the chemical and structure properties of some UCX samples as function of heating conditions has been carried out. Such data are essential to determine optimal conditions for the production of isotopes by the isotope separator on-line (ISOL) technique. First results are presented here for Kr and Ag. Investigations for other kinds of fission targets are planned.

The radioactive ion beam production systems for the SPIRAL2 project

The SPIRAL2 project, currently under construction at GANIL, will include an isotope separator on line based facility for the production and acceleration of radioactive ion beams. A superconducting linear accelerator will accelerate 5 mA deuterons up to 40 MeV and 1 mA heavy ions up to 14.5 MeV/u. These primary beams will be used to bombard both thick and thin targets. We are investigating three different techniques to produce the radioactive ion beams: (1) the neutron induced fission of uranium carbide, (2) the direct interaction of deuterons in a uranium carbide target, and (3) the interaction of a heavy ion beam with a target. All these production systems will be coupled to an ion source. Four kinds of ion sources are foreseen for the ionization of the radioactive atoms: an electron cyclotron resonance ion source, a surface ionization ion source, a forced electron beam induced arc discharge ion source, and a laser ion source depending on the characteristics of the desired radioactive ion beam in terms of intensity, efficiency, purity, etc. A presentation of the SPIRAL2 project and of the different production systems is given.

Low-energy states of 31 81 Ga 50 : Proton structure of the nuclei close to Ni 78

Excited levels were attributed to

Combined target-ion source unit for production of rare nuclides

^{81}_{31}

Status of ionization by radial electron neat adaptation ion source research and development for SPIRAL2 and EURISOL-DS

Ga

Development of a plasma ion source for next-generation facilities

_{50}

Exploratory analysis of a neutron-rich nuclei source based on photo-fission

for the first time which were fed in the

The ALTO Facility in Orsay

\beta

Two-dimensional/three-dimensional simulations for the optimization of an electron-beam-generated-plasma-based-type ion source

-decay of its mother nucleus