MULTIPLET-DEPENDENT MAGNETIC DICHROISM IN THE ATOMIC OXYGEN 2P SPECTRUM

The magnetic dichroism in the photoelectron spectrum of polarised oxyg en atoms O(1s(2)2s(2)2p(4))P-3(2) + hv --> O+(1s(2)2s(2)2p(3))L-2S+1(J ) + e(-) measured. Influences of the target polarisation on the photoe lectron angular distribution are tested experimentally. In particular, the magnetic dichroism in the photoelectron angular distribution for the final ionic states D-2 and P-2 is examined and compared with predi ctions made from measurements on S-4. For comparison with other techni ques concerning complete photoionisation experiments the photoelectron spin polarisation to be expected under a special experimental geometr y is derived.