Elsevier

Nuclear Physics

Volume 7, June–August 1958, Pages 516-525
Nuclear Physics

β-zerfall des N13 und fierz-interferenz bei fermiwechselwirkung

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Abstract

The β-ray spectrum of the mirror transition N13 → C13 has been investigated with an iron-free lens spectrometer. No deviation from the allowed shape was observed. The Fierz coefficient was measured to be b=(0.14 ± 2.37)% (standard deviation). Taking into account that only 70% of the transition rate are due to Fermi interaction an upper limit of 11 % is found for |bF|, bF being the Fierz coefficient for pure Fermi interaction.

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