The laser (intensity of 5.10
10
W/cm
2
, frequency of 2.3 eV, FWHM of 36 fs) excites the Na
14
to the Na
14
3+
, which splits in Na
8
+
and Na
6
2+
after 1.2 ps. From P.M. Dinh, P.-G. Reinhard and E. Suraud
, J. Phys. B
38
, 1637 (2005).