DSpace at EWHA: Southwestern boundary of the N=40 island of inversion: First study of low-lying bound excited states in 59V and 61V

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Southwestern boundary of the N=40 island of inversion: First study of low-lying bound excited states in 59V and 61V

Title: Southwestern boundary of the N=40 island of inversion: First study of low-lying bound excited states in 59V and 61V

Authors: Elekes, Z.; Juhasz, M. M.; Sohler, D.; Sieja, K.; Yoshida, K.; Ogata, K.; Doornenbal, P.; Obertelli, A.; Achouri, N. L.; Baba, H.; Browne, F.; Calvet, D.; Chateau, F.; Chen, S.; Chiga, N.; Corsi, A.; Cortes, M. L.; Delbart, A.; Gheller, J-M; Giganon, A.; Gillibert, A.; Hilaire, C.; Isobe, T.; Kobayashi, T.; Kubota, Y.; Lapoux, V; Liu, H. N.; Motobayashi, T.; Murray, I; Otsu, H.; Panin, V; Paul, N.; Rodriguez, W.; Sakurai, H.; Sasano, M.; Steppenbeck, D.; Stuhl, L.; Sun, Y. L.; Togano, Y.; Uesaka, T.; Wimmer, K.; Yoneda, K.; Aktas, O.; Aumann, T.; Chung, L. X.; Dombradi, Zs; Flavigny, F.; Franchoo, S.; Gasparic, I; Gerst, R-B; Gibelin, J.; Hahn, K., I; Kim, D.; Koiwai, T.; Kondo, Y.; Koseoglou, P.; Lee, J.; Lehr, C.; Linh, B. D.; Lokotko, T.; MacCormick, M.; Moschner, K.; Nakamura, T.; Park, S. Y.; Rossi, D.; Sahin, E.; Soderstrom, P-A; Takeuchi, S.; Tornqvist, H.; Vaquero, V.; Wagner, V; Wang, S.; Werner, V; Xu, X.; Yamada, H.; Yan, D.; Yang, Z.; Yasuda, M.; Zanetti, L.|Sunflower Collaboration

Abstract: The low-lying level structure of 59V and 61V was investigated for the first time. The neutron knockout reaction and inelastic proton scattering were applied for 61V while the neutron knock-out reaction provided the data for 59V. Four and five new transitions were determined for 59V and 61V, respectively. Based on the comparison to our shell-model calculations using the Lenzi-Nowacki-Poves-Sieja (LNPS) interaction, three of the observed ?? rays for each isotope could be placed in the level scheme and assigned to the decay of the first 11/2??? and 9/2??? levels. The (p, p') excitation cross sections for 61V were analyzed by the coupled-channels formalism assuming quadrupole plus hexadecapole deformations. Due to the role of the hexadecapole deformation, 61V could not be unambiguously placed on the island of inversion.