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Title: Absolute calibration of Kodak Biomax-MS film response to x rays in the 1.5- to 8-keV energy range

Abstract

The absolute response of Kodak Biomax-MS film to x rays in the range from 1.5- to 8-keV has been measured using a laboratory electron-beam generated x-ray source. The measurements were taken at specific line energies by using Bragg diffraction to produce monochromatic beams of x rays. Multiple exposures were taken on Biomax MS film up to levels exceeding optical densities of 2 as measured by a microdensitometer. The absolute beam intensity for each exposure was measured with a Si(Li) detector. Additional response measurements were taken with Kodak direct exposure film (DEF) so as to compare the results of this technique to previously published calibrations. The Biomax-MS results have been fitted to a semiempirical mathematical model (Knauer et al., these proceedings). Users of the model can infer absolute fluences from observed exposure levels at either interpolated or extrapolated energies. To summarize the results: Biomax MS has comparable sensitivity to DEF film below 3 keV but has reduced sensitivity above 3 keV ({approx}50%). The lower exposure results from thinner emulsion layers, designed for use with phosphor screens. The ease with which Biomax-MS can be used in place of DEF (same format film, same developing process, and comparable sensitivity) makes it a goodmore » replacement.« less

Authors:
; ; ;
Publication Date:
OSTI Identifier:
20861338
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 77; Journal Issue: 10; Other Information: DOI: 10.1063/1.2221698; (c) 2006 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; BEAM-PLASMA SYSTEMS; BRAGG REFLECTION; CALIBRATION; ELECTRON BEAMS; EMULSIONS; FILMS; KEV RANGE 01-10; LI-DRIFTED SI DETECTORS; MATHEMATICAL MODELS; MONOCHROMATIC RADIATION; OPACITY; PLASMA DIAGNOSTICS; SENSITIVITY; X RADIATION; X-RAY SOURCES

Citation Formats

Marshall, F. J., Knauer, J. P., Anderson, D., and Schmitt, B. L. Absolute calibration of Kodak Biomax-MS film response to x rays in the 1.5- to 8-keV energy range. United States: N. p., 2006. Web. doi:10.1063/1.2221698.
Marshall, F. J., Knauer, J. P., Anderson, D., & Schmitt, B. L. Absolute calibration of Kodak Biomax-MS film response to x rays in the 1.5- to 8-keV energy range. United States. doi:10.1063/1.2221698.
Marshall, F. J., Knauer, J. P., Anderson, D., and Schmitt, B. L. Sun . "Absolute calibration of Kodak Biomax-MS film response to x rays in the 1.5- to 8-keV energy range". United States. doi:10.1063/1.2221698.
@article{osti_20861338,
title = {Absolute calibration of Kodak Biomax-MS film response to x rays in the 1.5- to 8-keV energy range},
author = {Marshall, F. J. and Knauer, J. P. and Anderson, D. and Schmitt, B. L},
abstractNote = {The absolute response of Kodak Biomax-MS film to x rays in the range from 1.5- to 8-keV has been measured using a laboratory electron-beam generated x-ray source. The measurements were taken at specific line energies by using Bragg diffraction to produce monochromatic beams of x rays. Multiple exposures were taken on Biomax MS film up to levels exceeding optical densities of 2 as measured by a microdensitometer. The absolute beam intensity for each exposure was measured with a Si(Li) detector. Additional response measurements were taken with Kodak direct exposure film (DEF) so as to compare the results of this technique to previously published calibrations. The Biomax-MS results have been fitted to a semiempirical mathematical model (Knauer et al., these proceedings). Users of the model can infer absolute fluences from observed exposure levels at either interpolated or extrapolated energies. To summarize the results: Biomax MS has comparable sensitivity to DEF film below 3 keV but has reduced sensitivity above 3 keV ({approx}50%). The lower exposure results from thinner emulsion layers, designed for use with phosphor screens. The ease with which Biomax-MS can be used in place of DEF (same format film, same developing process, and comparable sensitivity) makes it a good replacement.},
doi = {10.1063/1.2221698},
journal = {Review of Scientific Instruments},
number = 10,
volume = 77,
place = {United States},
year = {Sun Oct 15 00:00:00 EDT 2006},
month = {Sun Oct 15 00:00:00 EDT 2006}
}