Approximations of Minimum Approach Distance in Electron Mirroring Phenomena

2nd International Scientific Conference (Pure Sciences, Brilliant Creativity and Renewed Building)

Al-Obaidi, Hassan N.^1 ; Khaleel, Imad H.^2 ; Mahdi, Ali S.^3

Deparment of Physics, College of Education, Al-Mustansiriyah University, Baghdad, Iraq^1

Deparment of Physics, College of Education for Pure Sciences, University of Baghdad, Baghdad, Ibn Al-Haithem, Iraq^2

Baghdad Governorate, Rusafa-1, Baghdad, Iraq^3

关键词: Analytical expressions;    Binomial expansion;    Charging effect;    Electron mirrors;    Minimum approach;    Sample surface;    Trapped electrons;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/571/1/012126/pdf
DOI  :  10.1088/1757-899X/571/1/012126

来源: IOP

【 摘 要 】

The minimum approaches distance of probing electrons in scanning electron microscope has investigated in accordance to mirror effect phenomenon. The analytical expression for such distance is decomposed using the binomial expansion. With aid of resulted expansion, the distribution of trapped electrons within the sample surface has explored. Results have shown that trapped electron distributes with various forms rather an individual one. The domination of any shape is mainly depend on the minimum approaches distance of probing electrons.