Elements discrimination in the study of super-heavy elements using an ionization chamber
/ Authors
F. C. A. Wieloch, Z. Sosin, J. Peter, K. Lojek, N. Alamanos, N. Amar, R. Anne, J. Angelique, G. Auger, R. Dayras
and 21 more authors
A. Drouart, J. Fontbonne, A. Gillibert, S. Grévy, F. Hanappe, F. Hannachi, R. Hue, A. Khouaja, T. Legou, A. Lopez-Martens, E. Liénard, L. Manduci, F. Santos, G. Politi, M. Saint-Laurent, C. Stodel, L. Stuttgé, J. Tillier, R. Tourreil, A. Villari, J. Wieleczko
/ Abstract
Abstract Dedicated ionization chamber (IC) was built and installed to measure the energy loss of very heavy nuclei at 2.7 MeV / u produced in fusion reactions in inverse kinematics (beam of 208 Pb ). After going through the IC, products of reactions on 12 C , 18 O targets are implanted in a Si detector. Their identification through their α-decay chain is ambiguous when their half-life is short. After calibration with Pb and Th nuclei, the IC signal allowed us to resolve these ambiguities. In the search for rare super-heavy nuclei produced in fusion reactions in inverse or symmetric kinematics, such a chamber will provide direct information on the nuclear charge of each implanted nucleus.
Journal: Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment