more detailed experimental decay scheme was obtained with absolute branching ratios for $\beta$-$\alpha$, $\beta-p$ and $\beta-2p$ emission. However, this experiment suffered from contamination. The $^{22}Al$ nuclei were produced by fragmentation of a $^{36}Ar$ primary beam and only about $30\%$ of the nuclei detected were $^{22}Al$ nuclei. Shell model calculations were also reported in this publication. From several arguments, the hypothesis that the ground state of $^{22}Al$ has a spin-parity of $3^+$ was favoured. Finally, a detailed 1s-0d shell-model calculation was carried out by Brown [@brown] for the isospin-forbidden $\beta$-delayed proton emission from the IAS in $^{22}Mg$. A first complete set of calculations for this particle decay was presented.

The $\beta$-decay of this nucleus is quite well known but still suffers from uncertainties and limitations. Due to strong contaminations in the previous measurements, we can expect that several transitions are still missing and probably hidden by much stronger transitions from contaminants. In addition, the $\gamma$ rays were not measured in any of these experiments. The aim of our experiment was to improve the $\beta$-decay measurement by means of different advantages: a better purity of the $^{22}Al$ secondary beam, higher statistics, greatly improved energy resolution in the measurement of the charged particles 