First spectroscopic study of $^{63}\mathrm{V}$ at the $N=40$ island of inversion

M. Juhász , Z. Elekes , D. Sohler , K. Sieja (1) , K. Yoshida , K. Ogata , P. Doornenbal , A. Obertelli (2) , H. Baba , F. Browne , D. Calvet , F. Château , S. Chen , N. Chiga , A. Corsi , M. Cortés , A. Delbart , J.-M. Gheller , A. Giganon , A. Gillibert , C. Hilaire , T. Isobe , T. Kobayashi , Y. Kubota , V. Lapoux , T. Motobayashi , I. Murray (3) , H. Otsu , V. Panin , N. Paul , W. Rodriguez , H. Sakurai , M. Sasano , D. Steppenbeck , L. Stuhl , Y. Sun , Y. Togano , T. Uesaka , K. Wimmer , K. Yoneda , N. Achouri (4) , O. Aktas , T. Aumann , L. Chung , Zs. Dombrádi , F. Flavigny (3) , S. Franchoo (3) , I. Gašparić , R.-B. Gerst , J. Gibelin (4) , K. Hahn , D. Kim , T. Koiwai , Y. Kondo , P. Koseoglou , J. Lee , C. Lehr , B. Linh , H. Liu , T. Lokotko , M. Maccormick (3) , K. Moschner , T. Nakamura , S. Park , D. Rossi , E. Sahin , P.-A. Söderström , S. Takeuchi , H. Törnqvist , V. Vaquero , V. Wagner , S. Wang , V. Werner , X. Xu , H. Yamada , D. Yan , Z. Yang , M. Yasuda , L. Zanetti

1 IPHC - Institut Pluridisciplinaire Hubert Curien
2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
3 IJCLab - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
4 LPCC - Laboratoire de physique corpusculaire de Caen

The low-lying level structure of 63V was studied for the first time by the inelastic proton scattering and the proton knock-out reaction in inverse kinematics. The comparison of the newly observed γ-ray transitions at 696(8) keV and 889(16) keV with our shell-model calculations using the Lenzi-Nowacki-Poves-Sieja interaction established two excited states proposed to be the first 11/2− and 9/2− levels. The (p,p′) excitation cross sections were analyzed by the coupled channel formalism assuming pure quadrupole as well as quadrupole+hexadecapole deformations. This resulted in large deformation parameters placing 63V in the island of inversion located below 68Ni.

Domaines: Physique [physics]

M. Juhász, Z. Elekes, D. Sohler, K. Sieja, K. Yoshida, et al.. First spectroscopic study of $^{63}\mathrm{V}$ at the $N=40$ island of inversion. Physical Review C, 2021, 103 (6), pp.064308. ⟨10.1103/PhysRevC.103.064308⟩. ⟨hal-03366223⟩