J. Phys. IV France 03 (1993) C4-139-C4-142
Interaction of positronium with Co+2 and Cu+2 ions in aqueous chloride and sulphate mediaB. NANDI GANGULY1 and P.K. SARKAR2
1 Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Calcutta 700064, India
2 Variable Energy Cyclotron Centre, 1/AF Bidhannagar, Calcutta 700064, India
The interactions of positronium in aqueous solutions of Co+2 and Cu+2 ions at 2970K in the presence of chloride and sulphate ions were studied at varying concentrations of the ions using LS and DBARL techniques. In the case of Co+2, the results suggest a spin conversion reaction, while for Cu+2, there is predominently an oxidation reaction with a small contribution of spin conversion. In both cases the reaction rate constants were calculated. The Different behaviours of Co+2 and Cu+2 ions are discernable from the results. A different trend in the variation of the DABRL narrow component with concentration is observed for Cu+2 ions in Cl- and SO-24 media.
© EDP Sciences 1993