Investigation of the Reaction Mg²⁵(p, γ)Al²⁶

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The Mg²⁵(p, γ)Al²⁶ reaction was studied at the three resonances of 317, 392 and 437 kev proton energy. The level of Al²⁶, corresponding to the third excited state (3.97 Mev) in Mg²⁶, was found at 4.18±0.02 Mev. Through the angular distributions of γ-rays, spins and parities of this level and some other levels were assigned as follows: 3.16 Mev, J=2⁺; 4.18 Mev, J=3⁺; 6.61 Mev, J=3⁻; 6.68 Mev, J=2⁺ or 3⁺; 6.72 Mev, J=4⁺ or 4⁻. The second and third excited states in Mg²⁶ were estimated to be J=2⁺ and J=3⁺ respectively. Excitation energies, the gamma decay scheme, and the radiation yield of the resonance levels are also given. The correspondence between levels of Mg²⁶ and Al²⁶ is discussed and a possible excited state configuration of Mg²⁶ is suggested.