G9/2 isobaric analogue resonances in the 56Fe(p, γ)57Co reaction

I. Fodor, J. Sziklai, B. Kardon, J. Rama Rao, K. Beckert, F. Herrmann, H. Schobbert

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Resonances consistent with fragmented g9/2 analogue resonance have been found in 57Co corresponding to the Ex=2.454 MeV level in the 57Fe parent nucleus. The resonance was located through the 56Fe(p, gamma )57Co reaction. Total gamma -ray spectra were measured with a Ge(Li) detector in 2 keV steps in the expected proton energy range. Excitation functions for the different primary gamma transitions were constructed. The g9/2 IAR were found in two components at E p=3728 and 3735 keV. The angular distributions of gamma rays were measured at these two bombarding proton energies. The two resonances were suggested to have spin and parity Jpi=9/2 + based on the gamma -ray excitation functions and angular distribution measurements. The gamma -branchings and absolute transition probabilities were also determined. The Ml gamma transitions from the g 9/2 IAR components going to the possible anti-analogue level at Ex=4.585 MeV excitation energy have absolute transition strengths of 1.8*10-2 Wu and 1.2*10-2 Wu.

Original languageEnglish
Article number016
Pages (from-to)1117-1125
Number of pages9
JournalJournal of Physics G: Nuclear Physics
Issue number7
Publication statusPublished - Dec 1 1978


ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy(all)

Cite this

Fodor, I., Sziklai, J., Kardon, B., Rama Rao, J., Beckert, K., Herrmann, F., & Schobbert, H. (1978). G9/2 isobaric analogue resonances in the 56Fe(p, γ)57Co reaction. Journal of Physics G: Nuclear Physics, 4(7), 1117-1125. [016]. https://doi.org/10.1088/0305-4616/4/7/016