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Title: X-ray source brightness comparison: Rigaku rotating anode source vs. Kevex microfocus tube

Abstract

In 2007, we began to explore alternative x-ray sources for application to refraction-enhanced (phase contrast) x-ray radiography of cryogenic NIF ignition capsules containing frozen deuterium-tritium (D-T) ice layers. These radiographs are currently obtained using Kevex microfocus tubes as backlights, and for these sources the x-ray source size is approximately 5 {micro}m. As part of this exploration, we obtained refraction-enhanced radiographs of empty plastic capsules using the Janus laser facility at LLNL, demonstrating that even large ({approx} 100 {micro}m) sources can be utilized in refraction-enhanced radiography provided the source/sample distance is sufficiently large, and provided the final x-ray detector has sufficient spatial resolution. Essentially, in the current geometry, we rely on a small source to provide spatial resolution and on the source/sample distance to provide refraction contrast, but an equally useful alternative geometry is to use a large source and rely on fine detector spatial resolution to provide spatial resolution and on the sample/detector distance to provide refraction contrast.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
974384
Report Number(s):
LLNL-TR-426090
TRN: US201009%%56
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; ANODES; BRIGHTNESS; CRYOGENICS; EXPLORATION; GEOMETRY; IGNITION; IMAGES; LASERS; LAWRENCE LIVERMORE NATIONAL LABORATORY; PLASTICS; REFRACTION; SPATIAL RESOLUTION; X-RAY RADIOGRAPHY; X-RAY SOURCES

Citation Formats

Koch, J A, Dewald, E, and Kozioziemski, B. X-ray source brightness comparison: Rigaku rotating anode source vs. Kevex microfocus tube. United States: N. p., 2010. Web. doi:10.2172/974384.
Koch, J A, Dewald, E, & Kozioziemski, B. X-ray source brightness comparison: Rigaku rotating anode source vs. Kevex microfocus tube. United States. https://doi.org/10.2172/974384
Koch, J A, Dewald, E, and Kozioziemski, B. Wed . "X-ray source brightness comparison: Rigaku rotating anode source vs. Kevex microfocus tube". United States. https://doi.org/10.2172/974384. https://www.osti.gov/servlets/purl/974384.
@article{osti_974384,
title = {X-ray source brightness comparison: Rigaku rotating anode source vs. Kevex microfocus tube},
author = {Koch, J A and Dewald, E and Kozioziemski, B},
abstractNote = {In 2007, we began to explore alternative x-ray sources for application to refraction-enhanced (phase contrast) x-ray radiography of cryogenic NIF ignition capsules containing frozen deuterium-tritium (D-T) ice layers. These radiographs are currently obtained using Kevex microfocus tubes as backlights, and for these sources the x-ray source size is approximately 5 {micro}m. As part of this exploration, we obtained refraction-enhanced radiographs of empty plastic capsules using the Janus laser facility at LLNL, demonstrating that even large ({approx} 100 {micro}m) sources can be utilized in refraction-enhanced radiography provided the source/sample distance is sufficiently large, and provided the final x-ray detector has sufficient spatial resolution. Essentially, in the current geometry, we rely on a small source to provide spatial resolution and on the source/sample distance to provide refraction contrast, but an equally useful alternative geometry is to use a large source and rely on fine detector spatial resolution to provide spatial resolution and on the sample/detector distance to provide refraction contrast.},
doi = {10.2172/974384},
url = {https://www.osti.gov/biblio/974384}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {3}
}