THE FINE STRUCTURE AT 11.52MeV LEVEL IN ²⁴Mg OBTAINED BY γ RESONANT ABSORPTION METHOD

The γ resonant absorption method has been used to determine the parameters of the 11.5MeV level in ²⁴Mg. Two dips were observed beyond our expectations. They are identified as the resonant absorptions caused by the splitting energy levels at 11.52MeV. The energies of the corresponding states are 11519.8±0.4keV and 11520.7±0.4keV with 22.6±3.4eV and 10.0±2.9eV total level widths respectively. The fine structure and the relevant parameters of 11.52MeV state in ²⁴Mg are given for the first time. The potential of the high resolution in the resonant absorption methodic clearly demonstrated in present paper.