EXPERIMENTAL INVESTIGATION OF ALIGNMENT OF THE L3 SUBSHELL VACANCY STATE PRODUCED AFTER PHOTOIONIZATION IN LEAD BY 59.57 KEV PHOTONS

Experimental investigation of the alignment of the L3 subshell vacancy state produced after photoionisation in lead by 59.57 keV photons has been reported. The results confirm the prediction of the calculations of Flugge et al (1972) that the atomic inner-shell vacancies produced after photoionisation are aligned and the X-ray emission from the filling of vacancies in states with J>or=3/2 is anisotropic, but contradict the predictions of Cooper et al. (1969) that after photoionisation of the inner shell, the vacancy state has an equal population of magnetic substates and the subsequent X-ray emission is isotropic.