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Directional correlation of the 0.845 and 1.24 MeV γ-rays of56Fe

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Il Nuovo Cimento (1955-1965)

Summary

The directional correlation of the 0.845 ÷ 1.24 MeV γ-γ cascade of the56Fe in coincidence with the β+ spectrum of 1.5 MeV maximum energy has been studied. The observed correlation function, after correction for the finite angular resolution of the detectors, is given byW(ϑ)=1+(0.1023±0.0027)P 2(cosϑ)+(0.0015±0.0035)P 4(cosϑ) according to a spin and multipolarity assignment 4(2)2(2)0.

Riassunto

È stata misurata la correlazione angolare fra i raggi γ in cascata del56Fe di energia pari a 0.845 MeV e 1.24 MeV, in coincidenza con i positroni appartenenti al decadimento diE max=1.5 MeV. La funzione di correlazione è data da:W(ϑ)=I+(0.01023±0.0027)P 2(cosϑ)+0.0015±0.0035)P 4(cosϑ). Essa è in accordo con un carattere di quadrupolo elettrico e con dei valori degli spin dei livelli involti nel decadimento tali da dare una sequenza (4.2)2(2)0.

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Authors and Affiliations

  1. Istituto di Fisica Sperimentale del Politecnico, Milano

    G. Bertolini, E. Lazzarini & M. Mandelli Bettoni

Authors
  1. G. Bertolini
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  2. E. Lazzarini
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  3. M. Mandelli Bettoni
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Bertolini, G., Lazzarini, E. & Mandelli Bettoni, M. Directional correlation of the 0.845 and 1.24 MeV γ-rays of56Fe. Nuovo Cim 5, 356–362 (1957). https://doi.org/10.1007/BF02855245

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  • DOI: https://doi.org/10.1007/BF02855245

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