Development of the doppler electron velocimeter: theory.
Abstract
Measurement of dynamic events at the nano-scale is currently impossible. This paper presents the theoretical underpinnings of a method for making these measurements using electron microscopes. Building on the work of Moellenstedt and Lichte who demonstrated Doppler shifting of an electron beam with a moving electron mirror, further work is proposed to perfect and utilize this concept in dynamic measurements. Specifically, using the concept of ''fringe-counting'' with the current principles of transmission electron holography, an extension of these methods to dynamic measurements is proposed. A presentation of the theory of Doppler electron wave shifting is given, starting from the development of the de Broglie wave, up through the equations describing interference effects and Doppler shifting in electron waves. A mathematical demonstration that Doppler shifting is identical to the conceptually easier to understand idea of counting moving fringes is given by analogy to optical interferometry. Finally, potential developmental experiments and uses of a Doppler electron microscope are discussed.
- Authors:
- Publication Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 902221
- Report Number(s):
- SAND2006-6063
TRN: US200717%%434
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; ELECTRON BEAMS; ELECTRON MICROSCOPES; ELECTRONS; HOLOGRAPHY; DOPPLER EFFECT; VELOCIMETERS; NANOSTRUCTURES; Nanotechnology.; Electronic measurements.; ELECTRON BEAMS -MEASUREMENT
Citation Formats
Reu, Phillip L. Development of the doppler electron velocimeter: theory.. United States: N. p., 2007.
Web. doi:10.2172/902221.
Reu, Phillip L. Development of the doppler electron velocimeter: theory.. United States. https://doi.org/10.2172/902221
Reu, Phillip L. 2007.
"Development of the doppler electron velocimeter: theory.". United States. https://doi.org/10.2172/902221. https://www.osti.gov/servlets/purl/902221.
@article{osti_902221,
title = {Development of the doppler electron velocimeter: theory.},
author = {Reu, Phillip L},
abstractNote = {Measurement of dynamic events at the nano-scale is currently impossible. This paper presents the theoretical underpinnings of a method for making these measurements using electron microscopes. Building on the work of Moellenstedt and Lichte who demonstrated Doppler shifting of an electron beam with a moving electron mirror, further work is proposed to perfect and utilize this concept in dynamic measurements. Specifically, using the concept of ''fringe-counting'' with the current principles of transmission electron holography, an extension of these methods to dynamic measurements is proposed. A presentation of the theory of Doppler electron wave shifting is given, starting from the development of the de Broglie wave, up through the equations describing interference effects and Doppler shifting in electron waves. A mathematical demonstration that Doppler shifting is identical to the conceptually easier to understand idea of counting moving fringes is given by analogy to optical interferometry. Finally, potential developmental experiments and uses of a Doppler electron microscope are discussed.},
doi = {10.2172/902221},
url = {https://www.osti.gov/biblio/902221},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2007},
month = {Thu Mar 01 00:00:00 EST 2007}
}