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Il Nuovo Cimento A (1965-1970)

, Volume 21, Issue 4, pp 687–706 | Cite as

Gamma-gamma directional-correlation studies in143Pr

  • S. Venkataratnam
  • G. Satyanarayana
  • V. Lakshminarayana
Article

Summary

The gamma-gamma directional correlations on (293-57), (665-57), (881-57), (231-491) and (587-351) keV cascades in143Pr are studied with high-efficiency sum and sum-peak coincidence spectrometers. The correlation coefficients of the cascades are obtained. The spins of the 351, 491, 722 and 938 keV levels in143Pr are conclusively assigned. The mixing ratios for the 231, 587, 665 and 881 keV transitions are determined.

Исследование гамма-гамма корреляции в143Pr

Реэюме

Исследуются гамма-гамма корреляции для (293-57), (665-57), (881-57), (231-491) и (587-351) кзВ каскадов в143Pr, испольэуя спектрометры с выс-сокой зффективнистью. Получены следуюшие корреляционные коеффициенты для каскадов. Для уровней 351, 491, 722 и 938 кзВ в143Pr приписываются соотсетственно следуюшие эначения спинов 3/2+, 5/2+, 3/2+ и 3/2+. Определяются отнощения смещивания для переходов 231, 587, 665 и 881 кзВ.

Riassunto

Si studiano le correlazioni direzionali gamma-gamma sui decadimenti a cascata del143Pr a (293-57), (665-57), (881-57), (231-491) e (587-351) keV, con spettrometri di alta efficienza a somma e a coincidenza somma-picco. Si ottengono i coefficienti di correlazione delle cascate. Si assegnano definitivamente gli spin dei livelli 351, 491, 722 e 938 keV per il143Pr. Si determinano i rapporti di mescolanza per le transizioni a 231, 587, 665 e 881 keV.

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Copyright information

© Società Italiana di Fisica 1974

Authors and Affiliations

  • S. Venkataratnam
    • 1
  • G. Satyanarayana
    • 1
  • V. Lakshminarayana
    • 1
  1. 1.Laboratories for Nuclear ResearchVisakhapatnam

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