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Octupole correlations in the N = Z+2=56 110Xe nucleus

Citation

A. Illana, R.M. Pérez-Vidal, D. Stramaccioni, J.J. Valiente-Dobón, T.R. Rodriguez, L.M. Robledo, A. Poves, K. Auranen, O. Beliuskina, C. Delafosse, T. Eronen, Z. Ge, S. Geldhof, W. Gins, T. Grahn, P.T. Greenlees, H. Joukainen, R. Julin, H. Jutila, A. Kankainen, M. Leino, J. Louko, M. Luoma, D. Nesterenko, J. Ojala, J. Pakarinen, P. Rahkila, P. Ruotsalainen, M. Sandzelius, J. Sarén, J. Uusitalo, G.L. Zimba, Octupole correlations in the N = Z + 2 = 56 110Xe nucleus, Physics Letters B, Volume 848, 2024, 138371, ISSN 0370-2693, https://doi.org/10.1016/j.physletb.2023.138371.

Abstract

This letter reports on the first observation of an octupole band in the neutron-deficient (𝑁 = 𝑍 + 2) nucleus 110Xe. The 110Xe nuclei were produced via the 54Fe(58Ni,2n) fusion-evaporation reaction. The emitted 𝛾 rays were detected using the JUROGAM 3 𝛾-ray spectrometer, while the fusion-evaporation residues were separated with the MARA separator at the Accelerator Laboratory of the University of Jyväskylä, Finland. The experimental observation of the low-lying 3− and 5− states and inter-band E1 transitions between the ground-state band and the octupole band proves the importance of octupole correlations in this region. These new experimental data combined with theoretical calculations using the symmetry-conserving configuration-mixing method, based on a Gogny energy density functional, have been interpreted as an evidence of enhanced octupole correlations in neutron-deficient xenon isotopes.

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Artículo firmado por 32 autores
2023 Descuento SCOAP

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