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Title: Electron beam moiré fringes imaging by image converter tube with a magnetic lens

Abstract

An image converter tube with a magnetic lens was used to obtain static images of moiré fringes formed by electron beam. These moiré fringes are formed due to the interference between the anode mesh and the photocathode containing slits of various spatial frequencies. Moiré fringes are observed at an accelerating voltage of 3.5 kV requiring the magnetic excitation condition of ∼550 ampere-turns. Not only the features of the fringes are analyzed but also the change of fringe spacing as a function of the rotation angle is investigated. The experimental results are found well in agreement with the theoretical analysis. By changing the rotation angle or adjusting the excitation condition of the magnetic lens, we were able to record parallel moiré and secondary moiré fringes too. The secondary moiré fringes can be observed in the rotation angle range of −39.5° to −50.6°. The theoretical analysis indicates that the secondary moiré is formed by the interference between the photocathode slits and the 2-D periodic structure of the anode mesh. Combining our proposed moiré method with the pulse-dilation technique may potentially open the door for future applications, in various fields including, but not limited to, ultrafast electrical pulse diagnostics.

Authors:
 [1]; ; ; ;  [1]
  1. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, Shenzhen University, Shenzhen 518060 (China)
Publication Date:
OSTI Identifier:
22596739
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 119; Journal Issue: 21; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANODES; ELECTRIC POTENTIAL; ELECTRON BEAMS; EXCITATION; IMAGE CONVERTERS; IMAGES; INTERFERENCE; LENSES; PERIODICITY; PHOTOCATHODES; PULSES; ROTATION; TUBES; TWO-DIMENSIONAL CALCULATIONS

Citation Formats

Liao, Yubo, School of Physics and Electronic Information Science, Gannan Normal University, Ganzhou 341000, Lei, Yunfei, Cai, Houzhi, Bai, Yanli, and Liu, Jinyuan. Electron beam moiré fringes imaging by image converter tube with a magnetic lens. United States: N. p., 2016. Web. doi:10.1063/1.4952750.
Liao, Yubo, School of Physics and Electronic Information Science, Gannan Normal University, Ganzhou 341000, Lei, Yunfei, Cai, Houzhi, Bai, Yanli, & Liu, Jinyuan. Electron beam moiré fringes imaging by image converter tube with a magnetic lens. United States. https://doi.org/10.1063/1.4952750
Liao, Yubo, School of Physics and Electronic Information Science, Gannan Normal University, Ganzhou 341000, Lei, Yunfei, Cai, Houzhi, Bai, Yanli, and Liu, Jinyuan. 2016. "Electron beam moiré fringes imaging by image converter tube with a magnetic lens". United States. https://doi.org/10.1063/1.4952750.
@article{osti_22596739,
title = {Electron beam moiré fringes imaging by image converter tube with a magnetic lens},
author = {Liao, Yubo and School of Physics and Electronic Information Science, Gannan Normal University, Ganzhou 341000 and Lei, Yunfei and Cai, Houzhi and Bai, Yanli and Liu, Jinyuan},
abstractNote = {An image converter tube with a magnetic lens was used to obtain static images of moiré fringes formed by electron beam. These moiré fringes are formed due to the interference between the anode mesh and the photocathode containing slits of various spatial frequencies. Moiré fringes are observed at an accelerating voltage of 3.5 kV requiring the magnetic excitation condition of ∼550 ampere-turns. Not only the features of the fringes are analyzed but also the change of fringe spacing as a function of the rotation angle is investigated. The experimental results are found well in agreement with the theoretical analysis. By changing the rotation angle or adjusting the excitation condition of the magnetic lens, we were able to record parallel moiré and secondary moiré fringes too. The secondary moiré fringes can be observed in the rotation angle range of −39.5° to −50.6°. The theoretical analysis indicates that the secondary moiré is formed by the interference between the photocathode slits and the 2-D periodic structure of the anode mesh. Combining our proposed moiré method with the pulse-dilation technique may potentially open the door for future applications, in various fields including, but not limited to, ultrafast electrical pulse diagnostics.},
doi = {10.1063/1.4952750},
url = {https://www.osti.gov/biblio/22596739}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 21,
volume = 119,
place = {United States},
year = {Tue Jun 07 00:00:00 EDT 2016},
month = {Tue Jun 07 00:00:00 EDT 2016}
}