Extended Data Fig. 1. Laser resonances observed in studies of different fermium isotopes in on-line and off-line measurements.

Error bars show statistical uncertainties (one standard deviation). The solid lines are fits to the data to extract the respective centroid wavenumber. The detected number of alpha events for the on-line investigated isotopes are normalized to the respective primary beam charge integral in units of 0.01 C. A more detailed zoom into the spectrum of ²⁵⁵Fm is shown as an inset in Fig. 1 in the main text.

Source Data