Electron emission and energy loss in grazing collisions of protons with insulator surfaces

Journal Article · Sun Jul 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.012904· OSTI ID:21011245

Gravielle, M S; Miraglia, J E ^[1]; Aldazabal, I ^[2]; Arnau, A ^[2]; Ponce, V H ^[3]; Aumayr, F ^[4]; Lederer, S; Winter, H ^[5]

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1. Instituto de Astronomia y Fisica del Espacio, Consejo Nacional de Investigaciones Cientificas y Tecnicas, and Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires (Argentina)
2. Departamento de Fisica de Materiales, Facultad de Quimica, UPV/EHU, San Sebastian (Spain)
3. Centro Atomico Bariloche, San Carlos de Bariloche (Argentina)
4. Institut fuer Allgemeine Physik der TU Wien, Wiedner Haupstrasse 8-10, A-1040 Vienna (Austria)
5. Institut fuer Physik, Humboldt Universitaet zu Berlin, Brook-Taylor-Strasse 6, D-12489 Berlin-Adlershof (Germany)

Electron emission from LiF, KCl, and KI crystal surfaces during grazing collisions of swift protons is studied using a first-order distorted-wave formalism. Owing to the localized character of the electronic structure of these surfaces, we propose a model that allows us to describe the process as a sequence of atomic transitions from different target ions. Experimental results are presented for electron emission from LiF and KI and energy loss from KI surfaces. Calculations show reasonable agreement with these experimental data. The role played by the charge of the incident particle is also investigated.

• OSTI ID: 21011245
• Journal Information: Physical Review. A, Vol. 76, Issue 1; Other Information: DOI: 10.1103/PhysRevA.76.012904; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
COMPUTER CALCULATIONS
CRYSTALS
DISTORTED WAVE THEORY
ELECTRON EMISSION
ELECTRONIC STRUCTURE
ELECTRONS
ENERGY LOSSES
ENERGY-LOSS SPECTROSCOPY
LITHIUM FLUORIDES
PARTICLES
POTASSIUM CHLORIDES
POTASSIUM IODIDES
PROTONS
SURFACES