Elsevier

Nuclear Physics A

Volume 149, Issue 2, 29 June 1970, Pages 385-391
Nuclear Physics A

The decay of 223Ra and its daughter products: (II). The decay of 219Rn and 215Po

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Abstract

Gamma-rays of energy 130.7, 222.0, 271.2, 294.0, 401.8, 516.5, and 677 keV and absolute intensity (%) 0.104, 0.028, 9.93, 0.059, 6.48, 0.022 and ≈ 0.006 respectively have been observed in the decay of 219Rn. Conversion electron studies show the 130.7 and 271.2 keV transitions to be M1 + 25 % E2 and 93.6 % E2 + 6.4 % M1 respectively. The 401.8, 294 and 222 keV transitions appear to be E2, M2 and E2 respectively. The 6.551 MeV α-271.2 keV γ directional correlation gave A22 = −0.108 ± 0.073 and A44 = −0.170 ± 0.056. The sequence 325272 is proposed.

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Now at Nuclear Physics Department, The Australian National University, Canberra.

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