Secondary electron emission model for photo-emission from metals in the vacuum ultraviolet

Ai-Gen Xie; Yi-Fan Liu; Hong-Jie Dong

doi:10.1007/s41365-022-01088-w

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Secondary electron emission model for photo-emission from metals in the vacuum ultraviolet

NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH | Updated：2022-09-26

- Secondary electron emission model for photo-emission from metals in the vacuum ultraviolet
- Nuclear Science and Techniques Vol. 33, Issue 8, Article number: 103(2022)
- Affiliations：
  
  1.School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
  2.Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science & Technology, Nanjing 210044, China
  3.Jiangsu International Joint Laboratory on Meteorological Photonics and Optoelectronic Detection, Nanjing University of Information Science & Technology, Nanjing 210044, China
- Author bio：
  
  *xagth@126.com
- Funds：
- DOI：10.1007/s41365-022-01088-w
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Ai-Gen Xie, Yi-Fan Liu, Hong-Jie Dong. Secondary electron emission model for photo-emission from metals in the vacuum ultraviolet. [J]. Nuclear Science and Techniques 33(8):103(2022)
DOI：

Ai-Gen Xie, Yi-Fan Liu, Hong-Jie Dong. Secondary electron emission model for photo-emission from metals in the vacuum ultraviolet. [J]. Nuclear Science and Techniques 33(8):103(2022) DOI： 10.1007/s41365-022-01088-w.

摘要

Abstract

This study investigates two secondary electron emission (SEE) models for photoelectric energy distribution curves ,f,(,E,ph, h,γ,),B,E,mean, absolute quantum efficiency (,AQE,), and the mean escape depth of photo-emitted electrons ,λ, of metals. The proposed models are developed from the density of states and the theories of photo-emission in the vacuum ultraviolet and SEE, where ,B, is the mean probability that an internal photo-emitted electron escapes into vacuum upon reaching the emission surface of the metal, and ,E,mean, is the mean energy of photo-emitted electrons measured from vacuum. The formulas for ,f,(,E,ph, h,γ,),B,λ, E,mean, and ,AQE, that were obtained were shown to be correct for the cases of Au at h,γ, = 8.1-11.6 eV, Ni at h,γ, = 9.2-11.6 eV, and Cu at h,γ, = 7.7-11.6 eV. The photoelectric cross-sections (PCS) calculated here are analyzed, and it was confirmed that the calculated PCS of the electrons in the conduction band of Au at h,γ, = 8.1-11.6 eV, Ni at h,γ, = 9.2-11.6 eV, and Cu at h,γ, = 7.7-11.6 eV are correct.

关键词

Keywords

Absolute quantum efficiencyPhotoelectric cross-sectionMean escape depth of photo-emitted electronsProbabilityPhoto-emission from metalsSecondary electron emissionVacuum ultravioletMean energy of photo-emitted electrons

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