High-resolution (p, t) reaction measurements as spectroscopic tests of ab-initio theory in the mid-pf shell

Leach, K. G.; Holt, J. D.; Garrett, P. E.; Stroberg, S. R.; Ball, G. C.; Bender, P. C.; Bildstein, V; Varela, A. Diaz; Dunlop, R.; Faestermann, T.; Hadinia, B.; Hertenberger, R.; Jamieson, D. S.; Jigmeddorj, B.; Kruecken, R.; Laffoley, A. T.; Radich, A. J.; Rand, E. T.; Svensson, C. E.; Triambak, S. und Wirth, H-F (2019): High-resolution (p, t) reaction measurements as spectroscopic tests of ab-initio theory in the mid-pf shell. In: Physical Review C, Vol. 100, No. 1, 014320

Abstract

Detailed spectroscopic measurements of excited states in Cr-50 and Zn-62 were performed using 24-MeV (p, t) transfer reactions on Cr-52 and Zn-64, respectively. In total, 45 states in Cr-50 and 67 states in Zn-62 were observed up to excitation energies of 5.5 MeV, including several previously unobserved states. These experimental results are compared to ab-initio shell-model calculations using chiral effective field theory with the valence-space in-medium similarity renormalization group method. This comparison demonstrates good agreement in the level orderings with these new theoretical methods, albeit with a slight overbinding in the calculations. This work is part of a continued push to benchmark ab-initio theoretical techniques to nuclear-structure data in 0(+) -> 0(+) superallowed Fermi beta-decay systems.

• Item Type: Journal article
• Faculties: Physics
• Subjects: 500 Science > 530 Physics
• ISSN: 2469-9985
• Language: English