Supression of electron-induced positive ion emission by a molecular overlayer: Ion-molecule charge exchange at a surface
作者： Ulrike Diebold , Theodore E. Madey
DOI: 10.1103/PHYSREVLETT.72.1116
关键词:
摘要: We report the suppression of electron-stimulated desorption positive ions (O[sup +] and F[sup +]) from a TiO[sub 2] (110) surface caused by adsorption fractional monolayer molecular NH[sub 3]. A linear decrease O[sup emission with 3] coverage is observed. This system allows us to distinguish between neutralization desorbing via interaction substrate or adsorbed molecules. propose novel charge exchange mechanism where electron transfer occupied orbitals molecules causes in detected ion yield. Charge cross sections 2.8([plus minus]0.5) 2.7([plus minus]1) ([times]10[sup [minus]15]) cm[sup have been determined for ions, respectively.
osti.gov
harvard.edu
sci-hub.se 参考文章(19)
S.R. Kasi, H. Kang, C.S. Sass, J.W. Rabalais, Inelastic processes in low-energy ion-surface collisions Surface Science Reports. ,vol. 10, pp. 1- 104 ,(1989) , 10.1016/0167-5729(89)90005-8
B.H. Cooper, C.A. DiRubio, G.A. Kimmel, R.L. McEachern, Low energy ion-surface interactions Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. ,vol. 64, pp. 49- 57 ,(1992) , 10.1016/0168-583X(92)95436-U
Jory A. Yarmoff, R.Stanley Williams, Neutralization effects in impact collision ion scattering spectroscopy: 6Li+ versus 4He+ Surface Science. ,vol. 166, pp. 101- 112 ,(1986) , 10.1016/0039-6028(86)90534-0
T. E. MADEY, Electron- and photon-stimulated desorption: probes of structure and bonding at surfaces. Science. ,vol. 234, pp. 316- 322 ,(1986) , 10.1126/SCIENCE.234.4774.316
A‐M. Lanzillotto, M. J. Dresser, M. D. Alvey, J. T. Yates, Alkali sensitization of H+ electron stimulated desorption from H adsorbed on Ni(111) Journal of Chemical Physics. ,vol. 89, pp. 570- 576 ,(1988) , 10.1063/1.455447
Craig Klauber, Mark D. Alvey, John T. Yates, NH3 adsorption on Ni(110) and the production of the NH2 species by electron irradiation Surface Science. ,vol. 154, pp. 139- 167 ,(1985) , 10.1016/0039-6028(85)90359-0
Stephen A. Joyce, Charles Clark, Varoujan Chakarian, David K. Shuh, Jory A. Yarmoff, Theodore E. Madey, Peter Nordlander, Brian Maschhoff, Hui-Shu Tao, Influence of coadsorbed potassium on the electron-stimulated desorption of F+, F-, and F* from PF3 on Ru(0001). Physical Review B. ,vol. 45, pp. 14264- 14272 ,(1992) , 10.1103/PHYSREVB.45.14264
Falko P. Netzer, Theodore E. Madey, The structure of CO on Ni(111) Journal of Chemical Physics. ,vol. 76, pp. 710- 715 ,(1982) , 10.1063/1.442674
Peter J. Feibelman, M. L. Knotek, Reinterpretation of electron-stimulated desorption data from chemisorption systems Physical Review B. ,vol. 18, pp. 6531- 6539 ,(1978) , 10.1103/PHYSREVB.18.6531
M.L. Knotek, Peter J. Feibelman, Stability of ionically bonded surfaces in ionizing environments Surface Science. ,vol. 90, pp. 78- 90 ,(1979) , 10.1016/0039-6028(79)90011-6