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  Shell evolution of N=40 isotones towards 60Ca: First spectroscopy of 62Ti

Cortés, M. L., Rodriguez, W., Doornenbal, P., Obertelli, A., Holt, J. D., Lenzi, S. M., et al. (2020). Shell evolution of N=40 isotones towards 60Ca: First spectroscopy of 62Ti. Physics Letters B, 800: 135071. doi:10.1016/j.physletb.2019.135071.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-80B8-A Version Permalink: http://hdl.handle.net/21.11116/0000-0005-80B9-9
Genre: Journal Article

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Cortés, M. L., Author
Rodriguez, W., Author
Doornenbal, P., Author
Obertelli, A., Author
Holt, J. D., Author
Lenzi, S. M., Author
Menéndez, J., Author
Nowacki, F., Author
Ogata, K., Author
Poves, A., Author
Rodríguez, T. R., Author
Schwenk, A.1, Author              
Simonis, J., Author
Stroberg, S. R., Author
Yoshida, K., Author
Achouri, L., Author
Baba, H., Author
Browne, F., Author
Calvet, D., Author
Château, F., Author
Chen, S., AuthorChiga, N., AuthorCorsi, A., AuthorDelbart, A., AuthorGheller, J-M., AuthorGiganon, A., AuthorGillibert, A., AuthorHilaire, C., AuthorIsobe, T., AuthorKobayashi, T., AuthorKubota, Y., AuthorLapoux, V., AuthorLiu, H. N., AuthorMotobayashi, T., AuthorMurray, I., AuthorOtsu, H., AuthorPanin, V., AuthorPaul, N., AuthorSakurai, H., AuthorSasano, M., AuthorSteppenbeck, D., AuthorStuhl, L., AuthorSun, Y. L., AuthorTogano, Y., AuthorUesaka, T., AuthorWimmer, K., AuthorYoneda, K., AuthorAktas, O., AuthorAumann, T., AuthorChung, L. X., AuthorFlavigny, F., AuthorFranchoo, S., AuthorGašparić, I., AuthorGerst, R. -B., AuthorGibelin, J., AuthorHahn, K. I., AuthorKim, D., AuthorKoiwai, T., AuthorKondo, Y., AuthorKoseoglou, P., AuthorLee, J., AuthorLehr, C., AuthorLinh, B. D., AuthorLokotko, T., AuthorMacCormick, M., AuthorMoschner, K., AuthorNakamura, T., AuthorPark, S. Y., AuthorRossi, D., AuthorSahin, E., AuthorSohler, D., AuthorSöderström, P. -A., AuthorTakeuchi, S., AuthorToernqvist, H., AuthorVaquero, V., AuthorWagner, V., AuthorWang, S., AuthorWerner, V., AuthorXu, X., AuthorYamada, H., AuthorYan, D., AuthorYang, Z., AuthorYasuda, M., AuthorZanetti, L., Author more..
Affiliations:
1Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548              

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Free keywords: Nuclear Experiment, nucl-ex,Nuclear Theory, nucl-th
 MPINP: Starke Wechselwirkung und exotische Kerne – Abteilung Blaum
 Abstract: Excited states in the $N=40$ isotone $^{62}$Ti were populated via the $^{63}$V$(p,2p)$$^{62}$Ti reaction at $\sim$200~MeV/u at the Radioactive Isotope Beam Factory and studied using $\gamma$-ray spectroscopy. The energies of the $2^+_1 \rightarrow 0^{+}_{\mathrm{gs}}$ and $4^+_1 \rightarrow 2^+_1$ transitions, observed here for the first time, indicate a deformed $^{62}$Ti ground state. These energies are increased compared to the neighboring $^{64}$Cr and $^{66}$Fe isotones, suggesting a small decrease of quadrupole collectivity. The present measurement is well reproduced by large-scale shell-model calculations based on effective interactions, while ab initio and beyond mean-field calculations do not yet reproduce our findings. The shell-model calculations for $^{62}$Ti show a dominant configuration with four neutrons excited across the $N=40$ gap. Likewise, they indicate that the $N=40$ island of inversion extends down to $Z=20$, disfavoring a possible doubly magic character of the elusive $^{60}$Ca.

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 Dates: 2020-01-10
 Publication Status: Published online
 Pages: -
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 Rev. Method: -
 Identifiers: arXiv: 1912.07887
DOI: 10.1016/j.physletb.2019.135071
URI: http://arxiv.org/abs/1912.07887
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Title: Physics Letters B
Source Genre: Journal
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Publ. Info: North-Holland
Pages: - Volume / Issue: 800 Sequence Number: 135071 Start / End Page: - Identifier: ISSN: 0370-2693
CoNE: https://pure.mpg.de/cone/journals/resource/954925524777