Neutrinoless Double Beta Decay: 2015 Review

Figure 18

Masses corresponding to present, mega, and ultimate exposures, assuming zero background condition and 5 years of data acquisition. The cubes represent the amount of ⁷⁶Ge, the (150 bar = 15 MPa) bottles, and the one of ¹³⁶Xe. The smallest masses depict the present exposure, while the biggest bottle is out of scale.