High energy X-ray microscopy for characterisation of fuel particles

Authors
Salbu, B Krekling, T Lind, OC Oughton, DH Drakopoulos, M Simionovici, A Snigireva, I Snigirev, A Weitkamp, T Adams, F Janssens, K Kashparov, VA
Citation
B. Salbu et al., High energy X-ray microscopy for characterisation of fuel particles, NUCL INST A, 467, 2001, pp. 1249-1252
Citations number
7
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
467
Year of publication
2001
Part
2
Pages
1249 - 1252
Database
ISI
SICI code
0168-9002(20010721)467:<1249:HEXMFC>2.0.ZU;2-Y
Abstract
For the first time different high energy microanalysis techniques were comb ined to characterise individual micrometer sized radioactive particles, It was shown that particle characteristics including weathering rates and mobi lisation of associated radionuclides are source specific and release-scenar io dependent. Fuel particles released during the explosion are characterise d by UO2-cores with surrounding laver of reduced U with low weathering rate s. In contrast. fuel particles released during the subsequent fire show UO2 -core with surrounding layers of oxidised U2O5, U3O8 with high weathering r ates (C) 2001 Elsevier Science B.V. All rights reserved.