A Simple Kinetic Model for the Alpha Radiolysis of Water Sorbed on NpO2

Alpha radiolysis experiments have been performed on NpO 2 that contains sorbed moisture. A high dose rate to the sample was achieved by spiking it with ~7000 ppm 244 Cm during preparation. Pressure monitoring of sample containers showed that a low, steady-state pressure plateau is reached. This plat...

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Bibliographic Details
Published in:Nuclear technology 2004-05, Vol.146 (2), p.206-209
Main Authors: Icenhour, Alan S., Toth, Louis M., Wham, Robert M., Brunson, R. R.
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Exact sciences and technology
Fuels
Nuclear fuels
Preparation and processing of nuclear fuels
Online Access:Get full text
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Summary:Alpha radiolysis experiments have been performed on NpO 2 that contains sorbed moisture. A high dose rate to the sample was achieved by spiking it with ~7000 ppm 244 Cm during preparation. Pressure monitoring of sample containers showed that a low, steady-state pressure plateau is reached. This plateau indicates a situation in which the forward reaction (i.e., radiolysis of water) is equal to the back reaction (i.e., the reformation of H 2 O). In this technical note, a simple kinetic model that can be used for predicting steady-state pressures under practical conditions is described.
ISSN:0029-5450
1943-7471
DOI:10.13182/NT04-A3499