5.667$\pm$0.008    0.35$\pm$0.11                     
          21       5.808$\pm$0.049    0.18$\pm$0.55                     
          22       5.909$\pm$0.056    0.21$\pm$0.62                     
       23$^{**}$   6.085$\pm$0.008    0.41$\pm$0.07                     
          24       6.774$\pm$0.008    0.41$\pm$0.12     6.62$\pm$0.10     0.7$\pm$0.3
                                                        6.93$\pm$0.10    0.1$\pm$0.05
          25       7.517$\pm$0.011    0.33$\pm$0.07                     
                                                        8.29$\pm$0.10    0.2$\pm$0.05
      ----------- ----------------- ----------------- ----------------- ---------------

3.  $\gamma$-ray spectrum\

    Figure \[fig:gamma\] shows eleven $\gamma$ rays detected in the germanium clover detector during the $^{22}Al$ measurement. Only six of them (labelled 2, 4, 6, 9, 10 and 11) are in coincidence with a low-energy event in the E4 detector (E4 &lt; 400 keV). This energy range corresponds mainly to $\beta$ particles emitted without a coincident proton. The other $\gamma$ rays 1, 5, 7 and 8 will be disscussed below.\
    No $\gamma$-$\gamma$ coincidences could be established using the diagonally opposite detectors of the clover. This lack of coincidences does not mean that there are no $\gamma$ cascades, but it is rather due to the relatively low efficiency of each individual segment of the germanium detector and to low statistics.\

    -   $\beta$-$\gamma$ decay\
        In figure \[fig:gamma\], the $\gamma$ ray 2 at $351 \pm 2$ keV comes from the $\beta$-$\gamma$ decay of $^{21}Na$ [@firestone04]. The $\gamma$ ray 4 at $583.7 \pm 1.6$ keV corresponds to the $\beta$-$\gamma$ decay of $^{22}Mg$ [@firestone05]. The other $\gamma$-rays 6, 9, 10, 11 at $1248.5 \pm 2.0$ 