1971
DOI: 10.1524/ract.1971.16.2.86
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Les effets chimiques des réactions nucléaires dans les composés dopés

Abstract: Les effets chimiques des réactions nucléaires dans les composés dopésm. Le Chromate de potassium dopé au phosphate Par T. COSTEA, IRINA NEGOESCU et GEORGETA PODEANU, Institut de Physique Atomique, Bucarest, Roumanie Avec 11 figures. (Reçu le 30 novembre 1970) RésuméEn étudiant le recuit thermique des échantillons de K 2 Cr0 4 pur et dopé au P0 4 3-, on a observé que le degré de recuit ainsi que l'énergie d'activation diminuent à mesure que la concentration du dopant augmente. On a fait aussi une comparaison en… Show more

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“…Whereas the introduction of Tl + in the solid matrix led to a decrease in retention, the opposite behaviour was observed for dopant Ca 2+ and La 3+ . Further experiments by COSTEA et al [7,8] The formation of donor species such as by reaction (I) will occur during irradiation, either by ionization of the dopant or more likely, owing to its low concentration, by the dopant capturing an electron released into the lattice. But this process at a given temperature is not straightforward and may depend on the formation-rate and cross section for electron capture of other competitors in the lattice.…”
Section: Discussionmentioning
confidence: 99%
“…Whereas the introduction of Tl + in the solid matrix led to a decrease in retention, the opposite behaviour was observed for dopant Ca 2+ and La 3+ . Further experiments by COSTEA et al [7,8] The formation of donor species such as by reaction (I) will occur during irradiation, either by ionization of the dopant or more likely, owing to its low concentration, by the dopant capturing an electron released into the lattice. But this process at a given temperature is not straightforward and may depend on the formation-rate and cross section for electron capture of other competitors in the lattice.…”
Section: Discussionmentioning
confidence: 99%