Photofield Emission Spectroscopy of Ba on W

• Authors: T. Radoń , S. Jaskółka
• Languages of publication: EN

Abstracts

EN

Optical transitions in photofield emission from barium covered tungsten were observed. The initial energies of the excited electrons obtained for dif­ferent crystallographic planes range near the values of s₁ = -0.07 ± 0.02 eV and s₂ = -0.28 ± 0.04 eV with respect to the Fermi level. The energies are ascribed to electrons in the thin barium layer. The work functions of the barium covered tungsten (100), (111) and (100) planes were estimated us­ing field emission method. In order to measure very small photocurrents a modulated laser radiation and the phase-sensitive detection were used.

Keywords

EN

73.20.-r; 79.70.+q

Discipline

• 73.20.-r: Electron states at surfaces and interfaces
• 79.70.+q: Field emission, ionization, evaporation, and desorption

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 87
• Issue: 3
• Pages: 657-662

Dates

published

1995-03

received

1994-09-19

(unknown)

1995-01-20

Contributors

author

T. Radoń

• Institute of Experimental Physics, University of Wrocław, Pl. Maxa Borna 9, 50-204 Wrocław, Poland

author

S. Jaskółka

• Institute of Experimental Physics, University of Wrocław, Pl. Maxa Borna 9, 50-204 Wrocław, Poland

Identifiers

DOI

10.12693/APhysPolA.87.657