L-subshell ionisation of 71Lu, 73Ta and 79Au by 1.5-4.5 MeV alpha particles

The L X-rays of 71Lu, 73Ta and 79Au were produced by 1.5-4.5 MeV alpha particle bombardment. The emitted Lα, Lγ1 and Lγ2,3 lines were selected to convert X-ray production cross sections into ionisation cross sections. The ionisation cross sections obtained were compared with the predictions of the ECPSSR theory. A reasonable agreement of L3-subshell ionisation cross sections between the present experiment and the ECPSSR theory is found. The departures of the measured L2-subshell ionisation cross sections from the ECPSSR theory are discussed. (orig.)