Cesium ion bombardment of metal surfaces: Final report for period January 1984 to May 1986

Technical Report · Thu May 01 04:00:00 EDT 1986

OSTI ID:6749293

Seidl, M; Carr, W; Tompa, G S

The steady state Cs coverage due to Cs/sup +/ bombardment of polycrystalline Mo and W has been studied for the incident energy range below 500 eV. When a sample is exposed to a Cs/sup +/ ion beam, the work function decreases until steady state is reached with a total dose of less than approx. =1*10/sup 16/ ions/cm/sup 2/, for both W and Mo. A steady state minimum work function surface is produced at an incident energy of approx. =100 eV for Mo and at an incident energy of approx. =45 eV for W. At a given bombarding energy the Cs coverage of W is uniformly less than that of Mo. H coadsorption does not have a large effect on the steady state work function. A theory describing the steady state coverage has been developed and is used to make predictions for other materials. 94 refs., 37 figs.

• Research Organization: Stevens Inst. of Tech., Hoboken, NJ (USA)
• DOE Contract Number: AC02-84ER53167
• OSTI ID: 6749293
• Report Number(s): DOE/ER/53167-1; ON: DE87005704
• Country of Publication: United States
• Language: English

Related Subjects

656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALI METALS
AUGER ELECTRON SPECTROSCOPY
CESIUM
CESIUM IONS
CHARGED PARTICLES
COLLISIONS
DATA
DEPOSITION
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY BEAM DEPOSITION
EXPERIMENTAL DATA
FUNCTIONS
HYDROGEN
INFORMATION
ION COLLISIONS
IONS
MATHEMATICAL MODELS
METALS
MOLYBDENUM
NONMETALS
NUMERICAL DATA
SPECTROSCOPY
SPUTTERING
SURFACE COATING
TRANSITION ELEMENTS
TUNGSTEN
WORK FUNCTIONS