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Setup for the production of short lived neutron deficient isotopes of condensable elements

Applied nuclear physics and instrumentation

To deepen the understanding of the nucleo-synthesis, one needs to study exotic nuclei, which no longer live on the earth. Their study needs to produce them artificially, by making endemic nuclei collide at high energy using installation like ISOLDE at CERN, ISAC at TRIUMF or SPIRAL1 at GANIL.

To refine the results, the number of available nuclei must be high enough. The nuclei having moderate exotism, close to the stable isotopes, are rather easy to study, whereas the nuclei far from the stability can be very difficult to observe, as their half-lives decrease with their exotism, reducing the time to deliver them to the experimentalists and the time to study them. The issues related to the exploration of exotic regions of the nuclide chart thus rapidly increase with the exotism of the nuclei.

A production technique called ISOL method (Isotope Separator On Line) is currently in use in several world class laboratories and has been operating at GANIL/SPIRAL1 (Système de Production d’Ions Radioactifs Accélérés en Ligne phase 1) for more than 13 years. A recent upgrade presently under commissioning aims to enlarge the choice of the radioactive ion beam production, in terms of intensities and varieties. To reach that goal and so preserve the position of GANIL/SPIRAL1 among the leaders, new production systems with competitive performances or out of reach performances for other installations must be continuously designed.

The goal of this PhD work is to design, to construct and to test a new production system able to produce short lived isotopes of condensable elements (half-lives up to 10 ms, masses within the 70-130 range an neutron deficient) with rates coping with the intensities expected by the experiments.

The PhD work will be conducted within the “Groupe Production d’Ions” (15 people), which is in charge for the design and the operation of the stable and radioactive ion sources. The work will mainly be performed at GANIL (250 people, technicians and physicists), but implies exchanges and collaborations with international laboratories.


Expected skills:  Solid background in atomic physics. Knowledge in nuclear physics, techniques related to nuclear instrumentation (electronic, detection, measurement, vacuum, mechanics). Knowledge in computing and mathematics are necessary.

Fluent written and spoken French and English

Interest in team work, exchange and collaboration

Curious, imaginative. Taste for seeking practical solutions and for their implementation.


Contact: Pascal JARDIN

GANIL, BP 5027, F-14 076 Caen cedex 05


Phone: +33 (0)2 31 45 46 59

Fax: +33 (0)2 31 45 44 21

e-mail : jardin_at_ganil.fr


 

 

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