Abstract
The atomic mass of has been measured by comparing cyclotron frequencies of single ions in a Penning trap. The result, with 1 standard deviation uncertainty, is 214 484 (11) u. Combined with previous results for the mass of [Audi, Wapstra, and Thibault, Nucl. Phys. A 729, 337 (2003)], this gives a value , sufficiently precise for ongoing searches for the neutrinoless double-beta decay of .
- Received 11 September 2006
DOI:https://doi.org/10.1103/PhysRevLett.98.053003
©2007 American Physical Society