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Secondary ion emission and sputter yields from metal targets under F/sub 2//sup +/ bombardment

Journal Article · · Anal. Chem.; (United States)
DOI:https://doi.org/10.1021/ac00165a012· OSTI ID:7007058
Sputter yields and relative ionization probabilities have been determined after saturation bombardment of 13 elements using a mass-separated 10-keV F/sub 2//sup +/ primary beam generated in a cold cathode ion gun operated at a pressure of 5.3 Pa of pure fluorine gas. Sputter yields are larger than those obtained under O/sub 2//sup +/ bombardment and are in good agreement with those obtained from an available formalism developed to give the best fit to experimental data on sputter yields of the element under inert ion bombardment. Ionization probabilities are higher by up to a factor of 50 for those elements giving poor ion yields under O/sub 2//sup +/ bombardment. Partially fluorinated metal surfaces are formed after bombardment to steady-state ion emission conditions with a fluorine uptake of about 10-20 atom %.
Research Organization:
IBM T.J. Watson Research Center, Yorktown Heights, NY (USA)
OSTI ID:
7007058
Journal Information:
Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 60:14; ISSN ANCHA
Country of Publication:
United States
Language:
English