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VOLUME 26 (1977) | ISSUE 3 | PAGE 156
Lithium emission spectra excited in the 10-25 nm region by electronatom collisions
We investigate, for the first time, the hard radiation produced when electrons from the К shell of the lithium atoms are excited by electron impact. We measured the energy dependences of the efficiency of excitation of spectral lines λ=19.9 nm (Is2 lS-\s2plP°) and λ =17.8 nm (Is2 lS-ls3pl{P°) of the singly-charged lithium ion, and also of one line λ = 13.5 nm (ls2S-2p2P) of the doubly charged lithium ion.