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Niveaux de bas-spin de234U peuplés dans la désintégration de234Pam(UX2)

Уровни234U иэ распада234Pam(UX2)

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Il Nuovo Cimento A (1965-1970)

Summary

Radioactive decay of234Pam(UX2) has been reinvestigated by means of different-size coaxial Ge(Li) detectors. γ-γ coincidences were performed with a Ge(Li)-NaI(Tl) assembly. More than one hundred γ-rays were measured in this study, of which seventy were new. A234U level scheme is proposed which interprets most γ-rays. New levels were found at 1174.2, 1457.5, 1501.1, 1667.4, 1694.0, 1796.0, 1863.8 and 1970.0 keV. Known levels at 849.6 keV (K Jπ = 03−), 926.8 keV (K Jπ = 22+), 989.8 keV (K Jπ = 22−), 1085.7 keV (K Jπ = 02+), 1125.7 keV (K Jπ = 22+) and 1601.9 keV (Jπ = 1+) were also found in this decay.

Riassunto

Si è studiato di nuovo il decadimento radiattivo del234Pam(UX2) usando rivelatori coassiali Ge(Li) di diverse grandezze. Le coincidenze γ-γ sono state rivelate con un complesso Ge(Li)-NaI(Tl). In questo studio si sono misurati più di un centinaio di raggi γ, di cui settanta erano nuovi. Si propone uno schema dei livelli del234U che interpreta la maggior parte dei raggi γ. Si sono trovati nuovi livelli di 1174.2, 1457.5 1501.1, 1667.4, 1694.0, 1796.0, 1863.8 e 1970.0 keV. In questo decadimento si sono trovati anche i noti livelli di 849.6 keV (K Jπ = 03−), 926.8 keV (K Jπ = 22+), 989.8 keV (K Jπ = 22−), 1085.7 keV (K Jπ = 02+), 1125.7 keV (K Jπ = 22+) e 1601.9 keV (Jπ = 1+).

Реэюме

Заново исследуется радиоактивный распад234Pam(UX2), испольэуя коаксиальные Ge(Li) детекторы раэличных раэмеров. γγ совпадения регистрировались с помошью системы Ge(Li)-NaI(Tl). В работе были иэмерены более сотни раэличных гамма-лучей, среди которых семьдесят новых. Предложена схема уровней234U, которая поэволяет интерпретировать больщую часть гамма-лучей. Новые уровни были обнаружены при 1174.2, 1457.5, 1501.1, 1667.4, 1694.0, 1796.0, 1863.8 и 1970.0 кзВ. В зтом распаде были обнаружены также иэвестные уровни при 849.6 кзВ (K Jπ = 03), 926.8 кзВ (K Jπ = 22+), 989.8 кзВ (K Jπ = 22−), 1085.7 кзВ (K Jπ = 02+), 1125.7 кзВ (K Jπ = 22+) и 1601.9 кзВ (J Jπ = 1+).

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Authors and Affiliations

  1. Institut d’Etudes Nucléaires, Alger

    G. Ardisson & C. Marsol

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  1. G. Ardisson
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  2. C. Marsol
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Pour accélérer la publication, les auteurs de cet article ont agrée à ne pas recevoir les épreuves pour la correction.

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Ardisson, G., Marsol, C. Niveaux de bas-spin de234U peuplés dans la désintégration de234Pam(UX2). Nuov Cim A 28, 155–172 (1975). https://doi.org/10.1007/BF02820877

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