Kinetic electron emission induced by grazing scattering of slow atoms: Local probe of the Compton profile near the Fermi edge

Journal Article · Sat Oct 15 00:00:00 EDT 2005 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.72.161402· OSTI ID:20719642

Winter, HP; Lederer, S; Winter, H; Lemell, C; Burgdoerfer, J ^[1]

---

1. Institut fuer Allgemeine Physik, Vienna University of Technology, Wiedner Hauptstr. 8-10, A-1040 Vienna (Austria)

Kinetic electron emission induced by noble gas atoms impinging at low (keV) energies on an Al(111) surface under a grazing angle of incidence is studied by coincident time-of-flight and electron number spectroscopy. We observe small but defined yields for electron emission {gamma} at impact velocities below the 'classical' threshold for kinetic emission of quasifree metal electrons. An analysis within the impulse approximation indicates that subthreshold emission may serve as a probe for the local electron momentum distribution (Compton profile) above the topmost layer of metal targets.

• OSTI ID: 20719642
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 72, Issue 16; Other Information: DOI: 10.1103/PhysRevB.72.161402; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
ATOMS
COMPTON EFFECT
DENSITY
DISTRIBUTION
ELECTRON EMISSION
ELECTRON SPECTROSCOPY
ELECTRONS
IMPULSE APPROXIMATION
INCIDENCE ANGLE
KEV RANGE
LAYERS
RARE GASES
SURFACES
TIME-OF-FLIGHT METHOD