Un nuevo isótopo del Hierro 61 Ee
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Comisión Nacional de Energía Atómica. Argentina
Resumen
Se encontró una vida media de 6,0 ± 0,5 minutos en la fracción de hierro obtenida por las reacciones (n,α), (n,αp) y (d, αp) en Ni, Cu y Ni respectivamente. Se asignó el número de masa 61 al nuevo isótopo de hierro porque decae a 99 minutos 61 Co, ya conocido. Este último isótopo se separaba de su sustancia madre a intervalos. El 61 Fe emite rayos β y γ. La energía máxima de los negatrones emitidos se determinó por el método de absorción en 2,8 MeV. La energía de desintegración total es de unos 3,9 MeV, cuyo valor se obtuvo de la curva de absorción que se tomó con un tubo calibrado. También se identificó y confirmó que el nuevo nucleido emite un rayo gamma de 0,29 ± 0,03 MeV.
A half-life of 6.0 ± 0.5 minutes was found in the iron fraction obtained by (n,α), (n,αp), and (d, αp) reactions on Ni, Cu and Ni respectively. Mass number 61 was assigned to the new iron isotope because it decays to 99 minutes 61 Co, already known. This latter isotope was separated from its mother substance at intervals. 61 Fe emits β and γ rays. The maximum energy of the negatrons emitted was determined by the absorption method to be 2.8 MeV. The total disintegration energy is about 3.9 MeV, which value was obtained from the absorption curve that was taken by a calibrated tube. A gamma ray of 0.29 ± 0.03 MeV was also identified and confirmed to be emitted by the new nuclide.
A half-life of 6.0 ± 0.5 minutes was found in the iron fraction obtained by (n,α), (n,αp), and (d, αp) reactions on Ni, Cu and Ni respectively. Mass number 61 was assigned to the new iron isotope because it decays to 99 minutes 61 Co, already known. This latter isotope was separated from its mother substance at intervals. 61 Fe emits β and γ rays. The maximum energy of the negatrons emitted was determined by the absorption method to be 2.8 MeV. The total disintegration energy is about 3.9 MeV, which value was obtained from the absorption curve that was taken by a calibrated tube. A gamma ray of 0.29 ± 0.03 MeV was also identified and confirmed to be emitted by the new nuclide.