A STUDY OF THE TWO-STEP MECHANISM OF THE DOUBLE IONISATION OF NOBLE GASES

M. GRIN and C. DAL CAPPELLO

Institut de Physique, Laboratoire de Physique Mol=E9culaire et des=
 Collisions,
Technop=F4le 2000, 1 Rue Arago, 57078 Metz Cedex 03, France
e-Mail : cappello@ipc.sciences.univ-metz.fr
=20
An ab initio calculation of the differential cross section for the double
ionisation of noble gases is performed by using the first and second Born
approximation. A comparaison with the recent experiments of El Marji et al
shows that the agreement is good.