Non-destructive analysis of a bulky sample from a natural fossil reactor

Authors
Baechler, S Materna, T Jolie, J Cauwels, P Crittin, M Honkimaki, V Johner, HU Masschaele, B Mondelaers, W Kern, J Piboule, M
Citation
S. Baechler et al., Non-destructive analysis of a bulky sample from a natural fossil reactor, J RAD NUCL, 250(1), 2001, pp. 39-45
Citations number
15
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
ISSN journal
02365731 → ACNP
Volume
250
Issue
1
Year of publication
2001
Pages
39 - 45
Database
ISI
SICI code
0236-5731(200110)250:1<39:NAOABS>2.0.ZU;2-L
Abstract
Two non-destructive and position sensitive methods were used to analyze a s ample coming from the reactor site of Okelobondo near Oklo (Gabon). At the European Synchrotron Radiation Facility (ESRF), uranium and lead were visua lized in this piece by element sensitive tomography. The same sample was th en studied with the new prompt gamma activation (PGA) facility at the Swiss spallation neutron source SINQ (PSI Villigen). A neutron focusing capillar y lens permits to upgrade PGA to a position sensitive method. hi the Oklo s ample the concentration of uranium but also of 7 other elements were spatia lly analyzed.