Probing the quantum phase transition near N ≈ 60 via mass measurements of technetium isotopes

This is the authors' abstract. We don't add key points for this paper.

The masses of neutron-rich ¹⁰⁴⁻⁻¹⁰⁶Tc isotopes were measured using the JYFLTRAP double Penning trap and found to deviate from the Atomic Mass Evaluation 2020 by -79(25), 40(12), and 94(41) keV, respectively. In the case of 105,106Tc, the updated Q_β values are in agreement with a previous JYFLTRAP measurement, disagreeing with the values from the mass evaluation. The new mass values result in a more linear trend in two-neutron separation energies indicating that technetium ($Z=43$) isotopes around N≈60 are not a part of the island of shape coexistence around ¹⁰⁰Zr₆₀.