Modeling the evaporation rate of cesium off tungsten based controlled porosity dispenser photocathodes

Modeling the evaporation rate of cesium off tungsten based controlled porosity dispenser photocathodes

The evaporation of cesium from a tungsten surface is modeled using an effective one-dimensional potential well representation of the binding energy. The model accounts for both local and global interactions of cesium with the surface metal as well as with other cesium atoms. The theory is compared w...

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Main Authors: Z. Pan, K. L. Jensen
Format: Article
Language:English
Published: AIP Publishing LLC 2013-04-01
Series:AIP Advances
Online Access:http://link.aip.org/link/doi/10.1063/1.4800700
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spelling doaj-eb0f0539d2d341bb9ab6aa2c3f4dfa0a2020-11-25T02:27:03ZengAIP Publishing LLCAIP Advances2158-32262013-04-013404210504210510.1063/1.4800700Modeling the evaporation rate of cesium off tungsten based controlled porosity dispenser photocathodesZ. PanK. L. JensenThe evaporation of cesium from a tungsten surface is modeled using an effective one-dimensional potential well representation of the binding energy. The model accounts for both local and global interactions of cesium with the surface metal as well as with other cesium atoms. The theory is compared with the data of Taylor and Langmuir [Phys. Rev. 44, 423 (1933)10.1103/PhysRev.44.423] comparing evaporation rates to sub-monolayer surface coverage of cesium, gives good agreement, and reproduces the nonlinear behavior of evaporation with varying coverage and temperature. http://link.aip.org/link/doi/10.1063/1.4800700
collection DOAJ
language English
format Article
sources DOAJ
author Z. Pan
K. L. Jensen
spellingShingle Z. Pan
K. L. Jensen
Modeling the evaporation rate of cesium off tungsten based controlled porosity dispenser photocathodes
AIP Advances
author_facet Z. Pan
K. L. Jensen
author_sort Z. Pan
title Modeling the evaporation rate of cesium off tungsten based controlled porosity dispenser photocathodes
title_short Modeling the evaporation rate of cesium off tungsten based controlled porosity dispenser photocathodes
title_full Modeling the evaporation rate of cesium off tungsten based controlled porosity dispenser photocathodes
title_fullStr Modeling the evaporation rate of cesium off tungsten based controlled porosity dispenser photocathodes
title_full_unstemmed Modeling the evaporation rate of cesium off tungsten based controlled porosity dispenser photocathodes
title_sort modeling the evaporation rate of cesium off tungsten based controlled porosity dispenser photocathodes
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2013-04-01
description The evaporation of cesium from a tungsten surface is modeled using an effective one-dimensional potential well representation of the binding energy. The model accounts for both local and global interactions of cesium with the surface metal as well as with other cesium atoms. The theory is compared with the data of Taylor and Langmuir [Phys. Rev. 44, 423 (1933)10.1103/PhysRev.44.423] comparing evaporation rates to sub-monolayer surface coverage of cesium, gives good agreement, and reproduces the nonlinear behavior of evaporation with varying coverage and temperature.
url http://link.aip.org/link/doi/10.1063/1.4800700
work_keys_str_mv AT zpan modelingtheevaporationrateofcesiumofftungstenbasedcontrolledporositydispenserphotocathodes
AT kljensen modelingtheevaporationrateofcesiumofftungstenbasedcontrolledporositydispenserphotocathodes
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