Electric quadrupole channel of the 7.8 eV 229 Th transition

  title={Electric quadrupole channel of the 7.8 eV 229 Th transition},
  author={Pavlo V. Bilous and Nikolay Minkov and Adriana P'alffy},
  journal={Physical Review C},
The unique isomeric transition at 7.8 eV in $~^{229}\mathrm{Th}$ has a magnetic dipole ($M1$) and an electric quadrupole ($E2$) multipole mixing. So far, the $E2$ component has been widely disregarded. Here, we investigate the nuclear physics nature and the impact of the $E2$ decay channel for the nuclear coupling to the atomic shell based on the newest theoretical predictions for the corresponding reduced nuclear transition probabilities. Our results show that the contribution of the $E2… 

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