Transmutation of technetium: results of the EFTTRA-T1 experiment

Autor:	R.J.M Konings, Clive T. Walker, A.D Stalios, N Cocuaud
Rok vydání:	1998
Předmět:	Nuclear and High Energy Physics Nuclear fission product Nuclear Energy and Engineering Nuclear transmutation Nuclear fuel Chemistry Radiochemistry Pellets General Materials Science Irradiation Electron microprobe Fluence Microanalysis
Zdroj:	Journal of Nuclear Materials. 254:122-128
ISSN:	0022-3115
DOI:	10.1016/s0022-3115(98)00006-3
Popis:	The transmutation of the fission product 99Tc was studied by neutron irradiation in the High Flux Reactor at Petten. Six metallic rods of pure Tc, distributed over three capsules, were irradiated during eight reactor cycles to a total neutron fluence of about 2×1026 m−2. Metallographic examinations showed that no changes in the microstructure were visible after the irradiation. Electron probe microanalysis (EPMA) of the radial distribution of Ru, the product of the transmutation process, showed an increase from about 6% in the centre to 12–18% near the rim of the pellets. This effect is due to resonance-shielding of epithermal neutrons in the rim region. Mass spectrometric analysis of the pellet-average Ru concentration showed that the extent of transmutation is about 6–7%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::43929c79ec4a778d0c0b1f74beb9ea34 https://doi.org/10.1016/s0022-3115(98)00006-3 Zobrazit plný text záznamu Full Text from ScienceDirect