RECENT RESULTS IN ENERGY-RESOLVED AND ANGLE-RESOLVED DOUBLE PHOTOIONIZATION

The study of energy- and angle-resolved double photoionization leads t o the triple-differential cross section (TDCS) which can provide, exce pt for the spin polarization of the electrons, the most complete infor mation on the double photoionization process. Three recent results wil l be presented: an absolute measurement for a selected helium TDCS pat tern, TDCS patterns for direct double photoionization in neon leading to the three final ionic states, S-1(e), P-3(e) and D-1(e) of the np(4 ) ion core, and an investigation of resonance-affected double photoion ization in the neon 2p(4) D-1(e) continuum.