p3/2-alignment following heavy ion impact

The energy dependence of the alignment of 42Mo, 47Ag L3 shell and 79Au, 90Th M3 shell following impact ionization by ions with atomic number Z1=2 (helium) to Z1=18 (argon) was studied with a 5 in Johansson crystal spectrometer analyzing the degree of X-ray polarization. Experimental information about the amount of multiple ionization was obtained. The observed small negative alignment is concerned to be due to dealignment by couplings between the created vacancies. Large positive values of the alignment parameter as previously reported for the 79Au L3 shell is slow heavy ion collisions were not observed. (orig.)