Properties of the Lowest T = 2 State in 24Mg

Abstract

The lowest T = 2 state in 24Mg was investigated using the 23Na(p, )I)24Mg reaction. The excitation energies of this level and of the two lower T = 1 levels subsequently fed in its )I-ray decay were determined to be 15436·4±0·6, 10711·7±0·8 and 9967·S±0·5keV respectively. Accurate )I-ray decay branching ratios of these three levels were obtained, and a comparison was made with the analogous AT = 1 transitions in 24Na. From a simultaneous measurement of the radiative strength and the 23Na(p, (Xl )I)2°Ne strength, partial widths were deduced for the )I-ray, proton and (X-particle decays of the T = 2 level. The total width of the level was found to be 1· 02 ± O· 34 keV.