Current Direct Neutrino Mass Experiments

Figure 31

Deexcitation spectrum of ¹⁶³Ho for 𝑄=2.5 keV (a). (b) shows a zoom into the endpoint region of the spectrum with the effect of a 0.5 eV neutrino mass indicated by the red dashed line (reprinted from [182], Copyright 2011, with permission from Elsevier).

(a)

(b)