Evidence of dissociative collision induced diatomic and triatomic hydrogen ion formation from hydrocarbon ion interaction with silicon surface.
A singly charged hydrocarbon ion CH(x) (+) (x=0,1,2,3,4) was extracted from an electron bombardment type ion source using methane as the reagent gas and irradiated onto the Si(100) surface at glancing angle. Scattered ion spectrometry using an electrostatic energy analyzer revealed that H(+), H(2) (+), and H(3) (+) ions were clearly formed at the scattering angle of 15 degrees , associated with dissociative collisions of hydrocarbon ion species of incidence energy of 1000 eV. The formation of H(3) (+) was tentatively interpreted as resulting from combination of excited atomic hydrogen produced by dissociative collisions of CH(4) (+) ions with Si(100) surface.
Graduate school of Engineering, Kyushu Kyoritsu University, Yahatanishi, Kitakyushu, Fukuoka, 807-8585, Japan. shoji@kyukyo-u.ac.j.p
Fumiya
F
Shoji