is situated at $2145 \pm 5$ keV. It may correspond to a known $\gamma$-ray in $^{22}Mg$ measured at $2143.5$ keV emitted from a level situated at $5.4524 \pm 0.0004$ MeV [@firestone05]. This level also emits another $\gamma$-ray at $4205.4$ keV. Since our energy range is limited to $3800$ keV, this fact can not be checked. We assume that the $\gamma$-ray 11 comes from this known level. The absolute intensities of the $\gamma$ transitions are given in table \[tab:intens\_bet\_gam\] corrected for $\gamma$ efficiency and $\beta$-trigger efficiency. The $\beta$-trigger efficiency has been determined from the well known $\beta$-$\gamma$ transitions of $^{24}Al$, also produced in this experiment for detector calibration. Two $^{24}Al$ $\gamma$ rays at 1077 keV and 1368 keV [@firestone96] have been used and lead to a value of $39 \pm 3$% for the $\beta$-trigger efficiency.\

          ------------------ ---------------- ----------------
             Energy (MeV)     Intensity (%)    Parent nucleus
           $583.7 \pm 1.6$    $47.4 \pm 9.3$     $^{22}$Mg
           $1248.5 \pm 2.0$   $38.2 \pm 6.9$     $^{22}$Al
           $1985.6 \pm 1.3$   $31.1 \pm 5.4$     $^{22}$Al
           $2062.3 \pm 1.5$   $34.1 \pm 5.8$     $^{22}$Al
             $2145 \pm 5$     $1.7 \pm 0.7$      $^{22}$Al
          ------------------ ---------------- ----------------

          : *Measured energies and absolute intensities of $\gamma$-rays from the $\beta$-$\gamma$ decay of $^{22}Al$. The intensities are corrected for 