This investigation reports isomeric ratios in photonuclear reactions for heavy nuclei, suggesting important nuclear characteristics.
Photonuclear reactions on a natural mixture of mercury isotopes were investigated by the activation method at an electron energy of Eᵐ=55 MeV. The reaction yields as well as the isomeric ratios for 195,197 Hg and 198,200 Au were determined. The results are compared with theoretical predictions from the TALYS 2.0 code. Based on both the present experimental and available literature data, the systematics of isomeric ratios as a function of spin factors were obtained for heavy nuclei in the Z=60-80 range.
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Poriadina et al. (2025) studied this question.
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