Photo-double ionisation of Argon at 20 and 40 eV excess energy

We have measured the triple differential cross section of the Ar(2+)3p(4)((3)P(e)) state at 20 and 40 eV excess energy in equal and unequal energy sharing conditions, respectively. The present results and previous data of the He(2+)((1)S(e)) state measured in the same conditions have been represented by an exact parametrization of the triple differential cross section given by Malegat et al.