### Surface-induced dissociation and chemical reactions of C$_{2}$D 4 + on stainless steel, carbon (HOPG), and two different diamond surfacesSurface-induced dissociation and chemical reactions of C$_{2}$D 4 + on stainless steel, carbon (HOPG), and two different diamond surfaces

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 Author Feketeová, Linda ♦ Žabka, Jan ♦ Zappa, Fabio ♦ Grill, Verena ♦ Scheier, Paul ♦ Märk, Tilmann D. ♦ Herman, Zdenek Source SpringerLink Content type Text Publisher Springer-Verlag File Format PDF Copyright Year ©2009 Language English
 Subject Domain (in DDC) Natural sciences & mathematics ♦ Chemistry & allied sciences Subject Keyword Analytical Chemistry ♦ Biotechnology ♦ Organic Chemistry ♦ Proteomics ♦ Bioinformatics Abstract Surface-induced interactions of the projectile ion C$_{2}$D 4 + with room-temperature (hydrocarbon covered) stainless steel, carbon highly oriented pyrolytic graphite (HOPG), and two different types of diamond surfaces (O-terminated and H-terminated) were investigated over the range of incident energies from a few eV up to 50 eV. The relative abundance of the product ions in dependence on the incident energy of the projectile ion [collision-energy resolved mass spectra, (CERMS) curves] was determined. The product ion mass spectra contained ions resulting from direct dissociation of the projectile ions, from chemical reactions with the hydrocarbons on the surface, and (to a small extent) from sputtering of the surface material. Sputtering of the surface layer by low-energy Ar$^{+}$ ions (5–400 eV) indicated the presence of hydrocarbons on all studied surfaces. The CERMS curves of the product ions were analyzed to obtain both CERMS curves for the products of direct surface-induced dissociation of the projectile ion and CERMS curves of products of surface reactions. From the former, the fraction of energy converted in the surface collision into the internal excitation of the projectile ion was estimated as 10% of the incident energy. The internal energy of the surface-excited projectile ions was very similar for all studied surfaces. The H-terminated room-temperature diamond surface differed from the other surfaces only in the fraction of product ions formed in H-atom transfer surface reactions (45% of all product ions formed versus 70% on the other surfaces). ISSN 10440305 Age Range 18 to 22 years ♦ above 22 year Educational Use Research Education Level UG and PG Learning Resource Type Article Publisher Date 2011-11-22 Publisher Institution The American Society for Mass Spectrometry Publisher Place New York e-ISSN 18791123 Journal Journal of The American Society for Mass Spectrometry Volume Number 20 Issue Number 6 Page Count 12 Starting Page 927 Ending Page 938