Spectroscopy of the T= 32 A=47 and A=45 mirror nuclei via one- and two-nucleon knockout reactions

S. Uthayakumaar, M. A. Bentley*, E. C. Simpson, T. Haylett, R. Yajzey, S. M. Lenzi, W. Satuła, D. Bazin, J. Belarge, P. C. Bender, P. J. Davies, B. Elman, A. Gade, H. Iwasaki, D. Kahl, N. Kobayashi, B. Longfellow, S. J. Lonsdale, E. Lunderberg, L. MorrisD. R. Napoli, T. G. Parry, X. Pereira-Lopez, F. Recchia, J. A. Tostevin, R. Wadsworth, D. Weisshaar

*Corresponding author for this work

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Level schemes of the proton-rich nuclei, Mn47 (Z=25,N=22) and Cr45 (Z=24,N=21), have been established for the first time. The technique of mirrored one- and two-nucleon knockout reactions was applied to the secondary beams of V48/Mn48 and V47/Cr47 to populate states in Ti47/Mn47 and Sc45/Cr45, respectively. Mirror energy differences (MED) have been studied between the mirrored T=32 states for both mirror pairs and interpreted using both a shell-model approach and a density-functional-theory approach using the no-core configuration-interaction method. MED in this mass region provide a stringent test of the model prescriptions since both fp- and sd-shell orbitals are active and, in Cr45, spherical and well-deformed structures coexist near the ground state. The inclusive and exclusive one-nucleon removal cross sections have been determined for the populated states in Ti47/Mn47 and compared with results from reaction-model calculations.

Original languageEnglish
Article number024327
JournalPhysical Review C
Issue number2
Publication statusPublished - 25 Aug 2022

Bibliographical note

Publisher Copyright:
© 2022 authors. Published by the American Physical Society.

Funding Information:
Discussions with M. Spieker on data analysis are gratefully acknowledged. T.H., S.U., and S.J.L. acknowledge studentship support from the Science and Technology Facilities Council (STFC). This work is supported by STFC under Grants No. ST/L005727/1, No. ST/P003885/1, No. ST/V001035/1, and No. ST/V001108/1. W.S. acknowledges support from the Polish National Science Centre (NCN) under Contract No. 2018/31/B/ST2/02220. R.Y. acknowledges financial support for a Ph.D. studentship from Jazan University, Saudi Arabia. The work was supported by the National Science Foundation (NSF) under PHY-1565546 and by the U.S. Department of Energy (DOE), Office of Science, Office of Nuclear Physics, under Grant No. DE-SC0020451. GRETINA was funded by the DOE, Office of Science. Operation of the array at NSCL was supported by the DOE under Grants No. DE-SC0014537 (NSCL) and No. DE-AC02-05CH11231(LBNL).

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