On the Radiolytic Decomposition of Colloidal Silver Iodide in Aqueous Suspension

The decomposition of aqueous colloidal suspensions of AgI induced by ionizing radiation was investigated under various conditions using 188 Re as an in situ beta-radiation source. The suspensions were stabilized by an initial excess of either I - or Ag + ions. Although the results were somewhat scat...

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Bibliographic Details
Published in:Nuclear technology 2005-06, Vol.150 (3), p.303-314
Main Authors: Güntay, Salih, Cripps, Robin C., Jäckel, Bernd, Bruchertseifer, Horst
Format: Article
Language:English
Subjects:
AIR
Applied sciences
CHLORINE IONS
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Fuels
GENERAL STUDIES OF NUCLEAR REACTORS
Installations for energy generation and conversion: thermal and electrical energy
IODINE
IODINE IONS
IONIZING RADIATIONS
NITROUS OXIDE
Nuclear fuels
PH VALUE
RADIATION SOURCES
RADIOLYSIS
REACTOR ACCIDENTS
REACTORS
RHENIUM 188
SILVER IODIDES
SILVER IONS
SUSPENSIONS
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Summary:The decomposition of aqueous colloidal suspensions of AgI induced by ionizing radiation was investigated under various conditions using 188 Re as an in situ beta-radiation source. The suspensions were stabilized by an initial excess of either I - or Ag + ions. Although the results were somewhat scattered, the following trends were observed. With an initial excess of I - and under strong oxidizing conditions (N 2 O sparging) at pH 2, ˜65% AgI was decomposed into nonvolatile and volatile iodine (ratio 2:1) for doses of ˜20 kGy, and up to ˜80% was decomposed (mostly nonvolatile iodine) at pH 5. Chloride ions greatly enhanced the volatile and lowered the nonvolatile fractions. Little decomposition (
ISSN:0029-5450
1943-7471
DOI:10.13182/NT05-A3624