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Level scheme of123Sb

Схема уровней123Sb

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Il Nuovo Cimento B (1965-1970)

Summary

Two new transitions in123Sb from the beta decay of the 3/2+ ground state of123Sn were found: one with (381.3±0.7) keV corresponding to (2.7±0.3)·10−2% of the disintegrations and one with (542.2±0.9) keV corresponding to (1.6±0.3)·10−2% of the disintegrations. The search for a 170 keV transition depopulating the 712 keV level gives an upper limit of 2·10−2% of the disintegrations. To describe properties of the level scheme of123Sb, calculations were made on the basis of a model which assumes the coupling of the unpaired proton with an eveneven core via a phenomenological core-to-particle interaction. The theoretical results concerning energies, spectroscopic factors and electromagnetic properties are compared with previously published and presently given experimental data with fairly good agreement.

Riassunto

Si sono trovate due nuove transizioni nel123Sb da decadimento beta dello stato fondamentale 3/2+ del123Sn: una di (381.3±0.7) keV corrispondente al (2.7 ± 0.3) · 10−2% delle disintegrazioni ed una di (542.2±0.9) keV corrispondente al (1.6 ± 0.3) · 10−2% delle disintegrazioni. La ricerca di una transizione di 170 keV che spopoli ill ivello di 712 keV fornisce un limite superiore del 2·10−2% delle disintegrationi. Per descrivere le proprietà dello schema dei livelli del123Sb, si sono fatti dei calcoli secondo un modello che postula l’accoppiamento del protone non accoppiato con un nocciolo paripari tramite un’interazione fenomenologica nocciolo-particella. Si trova che i risultati teorici riguardanti le energie, i fattori spettroscopici e le proprietà elettromagnetiche sono in soddisfacente accordo con i dati sperimentali pubblicati precedentemente e attualmente.

Реэюме

Обнаружены два новых перехода в123Sb иэ β-распада 3/2+ основного состояния123Sn: один с знергией (381.3±0.7) КзВ, соответствуюший (2.7±0.3)·10−2% распадов, и один с знергией (542.2±0.9) КзВ, соответствуюший (1.6±0.3)·10−2% распадов. Поиск 170 КзВ перехода, уменьщаюшего эаселенность 712 КзВ уровня, приводит к верхнему пределу 2·10−2% распадов. Чтобы описать свойства схемы уровней123Sb, были проведены вычисления на основе модели, которая предполагает свяэь неспаренного протона с четно-четной сердцевиной череэ феноменологическое вэаимодействие сердцевина-частица. Теоретические реэультаты, касаюшиеся знергий, спектроскопических факторов и злектромагнитных свойств, довольно хорощо согласуются с ранее опубликованными и представленными теперь зкспериментальными данными.

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This work was sponsored by the Conselho Nacional de Pesquisas and Banco Nacional de Desenvolvimento Econômico.

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Jeronymo, J.M.F., da Costa, N.L., de Pinho, A.G. et al. Level scheme of123Sb. Nuovo Cimento B (1965-1970) 55, 491–503 (1968). https://doi.org/10.1007/BF02711658

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