Il Nuovo Cimento (1955-1965)

, Volume 8, Issue 1, pp 48–59 | Cite as

On the decay of133Ba

  • R. K. Gupta
  • S. Jha
  • M. C. Joshi
  • B. K. Madan


The results of β-ray spectrometer studies and scintillation spectrometer studies of133Ba are being presented. A new level in133Cs at 160 keV has been found. The γ-rays of energies 56 keV, 79 keV, 160 keV, 224 keV, 277 keV, 302 keV, 358 keV, 383 keV and 437 keV have been detected. The conversion coefficients of some of the γ-rays have been estimated. It has been found by a combination of the summing technique, and the conventional coincidence technique that133Ba decays with an energy of (53 ±2) keV to the 437 keV state of133Cs by K-electron captures (46%) and L-electron captures (54%). A decay scheme is suggested.


Si presentano i risultati degli studi sul133Ba eseguiti con lo spettrometro per raggi β e con lo spettrometro a scintillazione. È stato trovato un nuovo livello del133Cs a 160 keV. Si sono scoperti i raggi γ di energie 56 keV, 79 keV, 160 keV, 224 keV, 277 keV, 302 keV, 358 keV, 383 keV e 437 keV, Si sono stimati i coefficienti di conversione di alcuni dei raggi γ. Con una combinazione della tecnica d’addizione con la tecnica di coincidenza convenzionale si è trovato che il133Ba decade con l’energia di (53±2)keV allo stato 437 keV del133Cs con catture di elettroniK (46%) e di elettroniL (54%). Si propone uno schema di decadimento.


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Copyright information

© Società Italiana di Fisica 1958

Authors and Affiliations

  • R. K. Gupta
    • 1
  • S. Jha
    • 1
  • M. C. Joshi
    • 1
  • B. K. Madan
    • 1
  1. 1.Tata Institute of Fundamental ResearchBombay

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