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Title: Stability and debris in high-brightness liquid-metal-jet-anode microfocus x-ray sources

Abstract

We investigate the x-ray spot stability and the debris emission in liquid-metal-jet anode electron-impact x-ray sources operating in the 10-100 W microfocus regime. The x-ray spot size is 15-23 {mu}m in diameter and the electron-beam power density is up to {approx}210 kW/mm{sup 2}, an order of magnitude higher than for conventional microfocus sources. In the power range of the investigation the source is stable in terms of spot size and position. The debris emission rate increases exponentially with the applied electron-beam power but may be reduced by combining larger and faster target jets with smaller e-beam foci and by mitigation schemes. It is concluded that the investigated factors will not limit the performance and function of liquid-metal-jet-anode electron-impact microfocus sources when operating in this high-brightness regime.

Authors:
; ;  [1]
  1. Biomedical and X-ray Physics, Department of Applied Physics, Royal Institute of Technology/Albanova, SE-106 91 Stockholm (Sweden)
Publication Date:
OSTI Identifier:
20982655
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 101; Journal Issue: 2; Other Information: DOI: 10.1063/1.2423229; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANODES; BEAM-PLASMA SYSTEMS; BRIGHTNESS; ELECTRON BEAMS; ELECTRONS; EMISSION; LIQUID METALS; MITIGATION; PLASMA; PLASMA FOCUS; PLASMA INSTABILITY; PLASMA JETS; POWER DENSITY; X-RAY SOURCES

Citation Formats

Otendal, M., Tuohimaa, T., and Hertz, H. M. Stability and debris in high-brightness liquid-metal-jet-anode microfocus x-ray sources. United States: N. p., 2007. Web. doi:10.1063/1.2423229.
Otendal, M., Tuohimaa, T., & Hertz, H. M. Stability and debris in high-brightness liquid-metal-jet-anode microfocus x-ray sources. United States. doi:10.1063/1.2423229.
Otendal, M., Tuohimaa, T., and Hertz, H. M. Mon . "Stability and debris in high-brightness liquid-metal-jet-anode microfocus x-ray sources". United States. doi:10.1063/1.2423229.
@article{osti_20982655,
title = {Stability and debris in high-brightness liquid-metal-jet-anode microfocus x-ray sources},
author = {Otendal, M. and Tuohimaa, T. and Hertz, H. M.},
abstractNote = {We investigate the x-ray spot stability and the debris emission in liquid-metal-jet anode electron-impact x-ray sources operating in the 10-100 W microfocus regime. The x-ray spot size is 15-23 {mu}m in diameter and the electron-beam power density is up to {approx}210 kW/mm{sup 2}, an order of magnitude higher than for conventional microfocus sources. In the power range of the investigation the source is stable in terms of spot size and position. The debris emission rate increases exponentially with the applied electron-beam power but may be reduced by combining larger and faster target jets with smaller e-beam foci and by mitigation schemes. It is concluded that the investigated factors will not limit the performance and function of liquid-metal-jet-anode electron-impact microfocus sources when operating in this high-brightness regime.},
doi = {10.1063/1.2423229},
journal = {Journal of Applied Physics},
number = 2,
volume = 101,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}