Here is the electron-impact ionization cross section for Oxygen molecule (O₂) from 5 eV to 2000 eV.

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T=5 to 2000 eV T=5 to 100 eV T=50 to 250 eV T=250 to 2000 eV

Legend (below)

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Data set	Source
	BEB W. Hwang, Y.-K. Kim and M.E. Rudd, J. Chem. Phys. 104, 2956 (1996).
	D. Rapp and P. Englander-Golden, J. Chem. Phys. 43, 1464 (1965).
	B. L. Schram, F. J. de Heer, M. J. van der Wiel and J. Kistenmaker, Physica 31, 94 (1965).
	B. L. Schram, H. R. Moustafa, J. Schutten and F. J. de Heer, Physica 32, 734 (1966).
	E. Krishnakumar and S. K. Srivastava, Int. J. Mass. Spectrom. Ion Processes 113, 1 (1992).

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