Examining the N = 28 shell closure through high-precision mass measurements of 46-48Ar. Mougeot, M., Atanasov, D., Barbieri, C., Blaum, K., Breitenfeld, M., de Roubin, A., Duguet, T., George, S., Herfurth, F., Herlert, A., Holt, J., D., Karthein, J., Lunney, D., Manea, V., Navrátil, P., Neidherr, D., Rosenbusch, M., Schweikhard, L., Schwenk, A., Somà, V., Welker, A., Wienholtz, F., Wolf, R., N., & Zuber, K. Physical Review C, 102(1):014301, 7, 2020. ![Examining the N = 28 shell closure through high-precision mass measurements of 46-48Ar [link]](https://bibbase.org/img/filetypes/link.svg "link")
Website doi abstract bibtex 1 download The strength of the N = 28 magic number in neutron-rich argon isotopes is examined through high-precision mass measurements of 46 – 48 Ar , performed with the ISOLTRAP mass spectrometer at ISOLDE/CERN. The new mass values are up to 90 times more precise than previous measurements. While they suggest the persistence of the N = 28 shell closure for argon, we show that this conclusion has to be nuanced in light of the wealth of spectroscopic data and theoretical investigations performed with the SDPF-U phenomenological shell model interaction. Our results are also compared with ab initio calculations using the valence space in-medium similarity renormalization group and the self-consistent Green's function approaches. Both calculations provide a very good account of mass systematics at and around Z = 18 and, generally, a consistent description of the physics in this region. This combined analysis indicates that 46 Ar is the transition between the closed-shell 48 Ca and collective 44 S .
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title = {Examining the N = 28 shell closure through high-precision mass measurements of 46-48Ar},
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abstract = {The strength of the N = 28 magic number in neutron-rich argon isotopes is examined through high-precision mass measurements of 46 – 48 Ar , performed with the ISOLTRAP mass spectrometer at ISOLDE/CERN. The new mass values are up to 90 times more precise than previous measurements. While they suggest the persistence of the N = 28 shell closure for argon, we show that this conclusion has to be nuanced in light of the wealth of spectroscopic data and theoretical investigations performed with the SDPF-U phenomenological shell model interaction. Our results are also compared with ab initio calculations using the valence space in-medium similarity renormalization group and the self-consistent Green's function approaches. Both calculations provide a very good account of mass systematics at and around Z = 18 and, generally, a consistent description of the physics in this region. This combined analysis indicates that 46 Ar is the transition between the closed-shell 48 Ca and collective 44 S .},
bibtype = {article},
author = {Mougeot, M. and Atanasov, D. and Barbieri, C. and Blaum, K. and Breitenfeld, M. and de Roubin, A. and Duguet, T. and George, S. and Herfurth, F. and Herlert, A. and Holt, J. D. and Karthein, J. and Lunney, D. and Manea, V. and Navrátil, P. and Neidherr, D. and Rosenbusch, M. and Schweikhard, L. and Schwenk, A. and Somà, V. and Welker, A. and Wienholtz, F. and Wolf, R. N. and Zuber, K.},
doi = {10.1103/PhysRevC.102.014301},
journal = {Physical Review C},
number = {1}
}
Downloads: 1
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