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    Experimental study of Cr53 via the (d,pγ) reaction

    M. Spieker1,*, L. A. Riley2, M. Heinze2, A. L. Conley1, B. Kelly1, P. D. Cottle1, R. Aggarwal1, S. Ajayi1, L. T. Baby1 et al.

    S. Baker1, I. Conroy2, I. B. D'Amato3, J. Esparza1, S. Genty1, I. Hay1, K. W. Kemper1, M. I. Khawaja1, P. S. Kielb3, A. N. Kuchera3, E. Lopez-Saavedra1,†, A. B. Morelock1,‡, J. Piekarewicz1, A. Sandrik1, V. Sitaraman1, E. Temanson1, C. Wibisono1, and I. Wiedenhoever1

    • *Contact author: mspieker@fsu.edu
    • †Present address: Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA.
    • ‡Present address: Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA.

    Phys. Rev. C 112, 064331 – Published 26 December, 2025

    DOI: https://doi.org/10.1103/wp85-rthk

    Abstract

    Excited states in Cr53 were studied via the Cr52(d,pγ) reaction up to the neutron-separation threshold. Proton-γ angular correlations and γ decay branching ratios were measured in particle-γ coincidences between the Super-Enge Split-Pole Spectrograph (SE-SPS) and CeBr3 Array (CeBrA) demonstrator of the John D. Fox Accelerator Laboratory at Florida State University. Previous spin-parity assignments from a (d,p) singles experiment at the SE-SPS are supported and γ-ray transitions in Cr53 are reported. We firmly assign higher-lying excited states to Cr53 because overlapping excited states and contaminants could be identified better due to the complementary γ-decay information. We also correct some of the previously reported excitation energies and present a reanalysis of previously measured Cr52(d,p)Cr53 angular distributions guided by the complementary γ-ray information. Based on this reanalysis, the fragmentation of the neutron 2p3/2, 2p1/2, 1f5/2, 1g9/2, and 2d5/2 single-particle strengths is reassessed for Cr53. A comparison to the corresponding strengths in Fe55 is presented.

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