High-precision measurements of low-lying isomeric states in $^{120-124}$In with JYFLTRAP double Penning trap

Author:

D. A. Nesterenko, J. Ruotsalainen, M. Stryjczyk, A. Kankainen, L. Al Ayoubi, O. Beliuskina, P. Delahaye, T. Eronen, M. Flayol, Z. Ge, W. Gins, M. Hukkanen, A. Jaries, D. Kahl, D. Kumar, S. Nikas, A. Ortiz-Cortes, H. Penttilä, D. Pitman-Weymouth, A. Raggio, M. Ramalho, M. Reponen, S. Rinta-Antila, J. Romero, A. de Roubin, P. C. Srivastava, J. Suhonen, V. Virtanen, A. Zadvornaya

Keyword:

Nuclear Experiment, Nuclear Experiment (nucl-ex)

journal:

Phys. Rev. C 108, 054301 (2023)

date:

2023-06-19 16:00:00

Abstract

Neutron-rich $^{120-124}$In isotopes have been studied utilizing the double Penning trap mass spectrometer JYFLTRAP at the IGISOL facility. Using the phase-imaging ion-cyclotron-resonance technique, the isomeric states were resolved from ground states and their excitation energies measured with high precision in $^{121,123,124}$In. In $^{120,122}$In, the $1^+$ states were separated and their masses were measured while the energy difference between the unresolved $5^+$ and $8^-$ states, whose presence was confirmed by post-trap decay spectroscopy was determined to be $\leq15$ keV. In addition, the half-life of $^{122}$Cd, $T_{1/2} = 5.98(10)$ s, was extracted. Experimental results were compared with energy density functionals, density functional theory and shell-model calculations.

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