Static quadrupole moment of high-spin isomers in the doubly-odd 214Fr nucleus

We have determined the spectroscopic quadrupole moment of two high-spin isomers (I=11 ℎ and I=32 ℎ) which have recently been identified in the doubly-odd 214Fr nucleus. The data have been extracted from a series of former level mixing spectroscopy (LEMS) measurements which had been performed to measure quadrupole moments of high-spin isomers in 211,212,213Fr isotopes. The quadrupole frequencies were measured in natural and enriched poly- and single-crystalline T1 at different temperatures