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Positronium interactions with Cu(II) Ions in water (1993)

Natale, P. ; Dupasquier, A. ; Fantola-Lazzarini, A. L. ; [et al.]

Springer

Il nuovo cimento della Società Italiana di Fisica 15 (1993), S. 1215-1228

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ISSN: 0392-6737

Keywords: Positron states ; Exchange interactions

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Summary Positronium reactions with Cu(II) ions in aqueous solution were investigated by measuring the concentration dependence of lifetime spectra and of 1D-ACAR curves for the following Cu (II) complexes: [Cu(H2O)6[2+, [Cu(NH3)4 (H2O)2]2+ and [Cu(EDTA)(H2O)]2−. The combined analysis of lifetime and ACAR data shows that Cu(II) ions:a) reduce the formation of positronium (inhibition effect),b) promote both ortho ⇌ para conversion and redox reactions. It was also found that inhibition and reaction rate constants are affected by the ligand type.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02451728

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