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Bibliographic Details
Main Authors:	Ruotsalainen, J., Jaries, A., Stryjczyk, M., Kankainen, A., Andel, B., Araszkiewicz, M., Beliuskina, O., Bruce, A., Cannarozzo, S., Chinthakayala, S., Doshi, S., Eronen, T., Fijałkowska, A., Fraile, L. M., Garczyński, P., Ge, Z., Grigorova, D., Jaworski, G., Korgul, A., Krakowski, T., Kurpeta, J., Lalkovski, S., Expósito, M. Llanos, Moore, I. D., Motilla, L. M., Mougeot, M., Penttilä, H., Raggio, A., Rattanasakuldilok, W., Saren, J., Solak, K.
Format:	Preprint
Published:	2025
Subjects:	Nuclear Experiment
Online Access:	https://arxiv.org/abs/2505.15625
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The masses of neutron-rich $^{104-106}$Tc 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 $^{105,106}$Tc, 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 $N \approx 60$ are not a part of the island of shape coexistence around $^{100}$Zr$_{60}$.

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