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Title: Microspot x-ray focusing using a short focal-length compound refractive lenses

Abstract

We have fabricated and tested short focal-length compound refractive lenses (CRLs) composed of microbubbles embedded in epoxy encased in glass capillaries. The interface between the bubbles formed 90 to 350 spherical biconcave microlenses reducing the overall focal length inversely by the number of lenses or bubbles. When compared with CRLs manufactured using other methods, the microbubble lenses have shorter focal lengths with higher transmissions and larger gains for moderate energy x rays (e.g., 7-20 keV). We used beamline 2-3 at the Stanford Synchrotron Radiation Laboratory and beamline 5BM-D-DND at the Advanced Photon Source to measure focal lengths between 100-250 mm with lens apertures varying between 97 and 321 {mu}m. Transmission profiles were measured giving, for example, a peak transmission of 46% for a 240 mm focal length CRL at 20 keV. The focal-spot sizes were also measured yielding, for example, a vertical spot size of 1.2 {mu}m resulting from an approximate 20-fold demagnification of the APS 23 {mu}m source size. The measured gains in intensity over that of unfocused beam were between 9 and 26.

Authors:
; ; ; ; ; ; ;  [1]
  1. Institute of Applied Physics Problems, Kurchatova 7, 220064, Minsk (Belarus)
Publication Date:
OSTI Identifier:
20644003
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 75; Journal Issue: 11; Other Information: DOI: 10.1063/1.1809289; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ADVANCED PHOTON SOURCE; APERTURES; BUBBLES; FOCUSING; GAIN; KEV RANGE 01-10; KEV RANGE 10-100; LENSES; LIGHT TRANSMISSION; OPTICS; PEAKS; SYNCHROTRON RADIATION; X RADIATION

Citation Formats

Dudchik, Y I, Kolchevsky, N N, Komarov, F F, Piestrup, M A, Cremer, J T, Gary, C K, Park, H, Khounsary, A M, Adelphi Technology, Inc. 981-B Industrial Road, San Carlos, California 94070, and Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439. Microspot x-ray focusing using a short focal-length compound refractive lenses. United States: N. p., 2004. Web. doi:10.1063/1.1809289.
Dudchik, Y I, Kolchevsky, N N, Komarov, F F, Piestrup, M A, Cremer, J T, Gary, C K, Park, H, Khounsary, A M, Adelphi Technology, Inc. 981-B Industrial Road, San Carlos, California 94070, & Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439. Microspot x-ray focusing using a short focal-length compound refractive lenses. United States. doi:10.1063/1.1809289.
Dudchik, Y I, Kolchevsky, N N, Komarov, F F, Piestrup, M A, Cremer, J T, Gary, C K, Park, H, Khounsary, A M, Adelphi Technology, Inc. 981-B Industrial Road, San Carlos, California 94070, and Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439. Mon . "Microspot x-ray focusing using a short focal-length compound refractive lenses". United States. doi:10.1063/1.1809289.
@article{osti_20644003,
title = {Microspot x-ray focusing using a short focal-length compound refractive lenses},
author = {Dudchik, Y I and Kolchevsky, N N and Komarov, F F and Piestrup, M A and Cremer, J T and Gary, C K and Park, H and Khounsary, A M and Adelphi Technology, Inc. 981-B Industrial Road, San Carlos, California 94070 and Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439},
abstractNote = {We have fabricated and tested short focal-length compound refractive lenses (CRLs) composed of microbubbles embedded in epoxy encased in glass capillaries. The interface between the bubbles formed 90 to 350 spherical biconcave microlenses reducing the overall focal length inversely by the number of lenses or bubbles. When compared with CRLs manufactured using other methods, the microbubble lenses have shorter focal lengths with higher transmissions and larger gains for moderate energy x rays (e.g., 7-20 keV). We used beamline 2-3 at the Stanford Synchrotron Radiation Laboratory and beamline 5BM-D-DND at the Advanced Photon Source to measure focal lengths between 100-250 mm with lens apertures varying between 97 and 321 {mu}m. Transmission profiles were measured giving, for example, a peak transmission of 46% for a 240 mm focal length CRL at 20 keV. The focal-spot sizes were also measured yielding, for example, a vertical spot size of 1.2 {mu}m resulting from an approximate 20-fold demagnification of the APS 23 {mu}m source size. The measured gains in intensity over that of unfocused beam were between 9 and 26.},
doi = {10.1063/1.1809289},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 11,
volume = 75,
place = {United States},
year = {2004},
month = {11}
}