scholarly journals Two-Fluxes and Reaction-Diffusion Computation of Initial and Transient Secondary Electron Emission Yield by a Finite Volume Method

10.5772/12858 ◽  
2011 ◽  
Author(s):  
Gilles Damamme ◽  
Asdin Aoufi
Keyword(s):  
Finite Volume Method ◽  
Finite Volume ◽  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
Reaction Diffusion ◽  
Emission Yield ◽  
Volume Method ◽  
Diffusion Computation

scholarly journals Atypical secondary electron emission yield curves of very thin SiO2 layers: Experiments and modeling

2021 ◽  
Vol 130 (13) ◽  
pp. 135305
Author(s):  
C. Rigoudy ◽  
K. Makasheva ◽  
M. Belhaj ◽  
S. Dadouch ◽  
G. Teyssedre ◽  
...  
Keyword(s):  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
Yield Curves ◽  
Emission Yield

Application of WFS for Simultaneous Work Function and Secondary Electron Emission Measurement on Ba Covered Tungsten

2005 ◽  
Vol 473-474 ◽  
pp. 293-296
Author(s):  
György Vida ◽  
Ildikó Beck ◽  
V. Katalin Josepovits ◽  
Miklós Győr
Keyword(s):  
Work Function ◽  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
Secondary Emission ◽  
Operating Conditions ◽  
Emission Measurement ◽  
Pressure Discharge ◽  
Emission Yield ◽  
Burning Voltage

In the present paper the secondary emission and work function of W covered with different thickness Ba layers are compared. The secondary emission and work function were measured by Work Function Spectroscopy (WFS). It is clearly pointed out that the thin Ba coating causes the the enhancement of electron induced secondary electron emission. In high pressure discharge lamps high secondary emission and high thermionic current are required for reliable operating conditions, i.e., for reaching the nominal burning voltage and current etc. The results prove that the Ba spreading on the W surface from an alkali earth tungstate material is advantageous for lowering the work function and, simultaneously, for increasing the secondary emission yield.

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