Abstract
A numerical discussion of the Zr L X-ray spectrum induced by 9 keV electron impact has been performed based on a calculation model. The results show that L1-L2M4.5 Coster-Kronig processes do not become closed in metallic zirconium and its yield f12M=0.06. Present Zr L1-L3M4.5 Coster-Kronig transition yield f13M=0.41. The calculated initial L-vacancy distribution N1:N2:N3=1:1.4:3.1 seems reasonable. M-electron shakeoff/shakeup probability due to an L-shell hole is also discussed.