The electric quadrupole channel of the 7.8 eV ${}^{229}\mathrm{Th}$ transition

Pavlo V. Bilous, Nikolay Minkov, Adriana Pálffy

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 bee…