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Article Dans Une Revue The European Physical Journal D : Atomic, molecular, optical and plasma physics Année : 2003

Effect of radiation dose on the size of bismuth particles produced by radiolysis

Résumé

Colloidal bismuth is formed in $\gamma$-irradiated solutions , containing BiO +, 0.2 M propanol-2 and $2\times 10^{-2}$ M of polyacrylic acid. Radiolytic reduction of these solutions produces long-lived bismuth clusters which are stabilized on the polymer chains. The clusters have a distinct absorption band at 350 nm with a tentatively assigned to Bi n0 or Bi nx+ structures. With continued irradiation, the clusters coalesce into colloidal particles of 5 nm diameter. The absorption spectra of Bi oligomers and colloidal particles are reported as well as the optical changes accompanying their formation.

Domaines

Matériaux

Dates et versions

hal-00182402 , version 1 (25-10-2007)

Identifiants

Citer

Roland Benoit, Marie-Louise Saboungi, Mona Tréguer-Delapierre. Effect of radiation dose on the size of bismuth particles produced by radiolysis. The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2003, 24, pp.123-125. ⟨10.1140/epjd/e2003-00133-6⟩. ⟨hal-00182402⟩
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