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Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract)
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| Zeitschriftentitel: | Review of Scientific Instruments |
|---|---|
| Personen und Körperschaften: | , , , |
| In: | Review of Scientific Instruments, 60, 1989, 7, S. 2334-2334 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
AIP Publishing
|
| Schlagwörter: |
| author_facet |
Karpenko, V. A. Khil’chenko, A. D. Lysenko, A. P. Panchenko, V. E. Karpenko, V. A. Khil’chenko, A. D. Lysenko, A. P. Panchenko, V. E. |
|---|---|
| author |
Karpenko, V. A. Khil’chenko, A. D. Lysenko, A. P. Panchenko, V. E. |
| spellingShingle |
Karpenko, V. A. Khil’chenko, A. D. Lysenko, A. P. Panchenko, V. E. Review of Scientific Instruments Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) Instrumentation |
| author_sort |
karpenko, v. a. |
| spelling |
Karpenko, V. A. Khil’chenko, A. D. Lysenko, A. P. Panchenko, V. E. 0034-6748 1089-7623 AIP Publishing Instrumentation http://dx.doi.org/10.1063/1.1140759 <jats:p>Since the early 1980s a tandem system consisting of an electrostatically focused image intensifier and an image vidicon has found extensive applications to visualization of the images formed by weak fluxes of x radiation. We present the result of measurements of some parameters of this complex linear video signal shaper (LVSS). The test x-ray image—x-ray lines dispersed in space by a single-crystal diffraction scheme (the projections of the linear focus of an x-ray tube) is directed onto a commercial one-stage image intensifier with electrostatic image focusing whose fiber-optics input window is covered by a luminophor to convert x radiation to light. The outlet of the image intensifier is fiber-optically coupled to the input fiber glass window of the commercial image vidicon (silicon intensifier target tube with intensifier section). The measurements performed on the device for absolute calibration of x-ray imaging detectors and x-ray counters (see the report at this Conference) have shown that the use of this LVSS permits one to record threshold flux densities of monoenergetic photons which are more than one order of magnitude lower than with the use of the image vidicon alone. Measurements of the dependence of the threshold flux density on the photon energy have been made. For example, for 8 keV (Cukα), when using gadolinium oxysulphide as the luminophor the threshold flux density is 20 times lower than for the image vidicon alone, and achieves 105 cm−2 s−1. At such a high sensitivity, detection of small-scale details of images with low brightness and contrast requires taking account of the noise of the radiation being detected, which is caused by the fluctuations of the photon flux. This LVSS visualizes light flashes caused by single hard x-ray photons and β particles which are incident upon the luminophor settled on the inlet window of the image intensifier. Both the x-ray images of the test objects and the luminescent flashes caused by photons and fast electrons are represented in digital form (see the report on multiframe digitization x-ray images at this Conference).</jats:p> Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) Review of Scientific Instruments |
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10.1063/1.1140759 |
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Allgemeines Technik |
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AIP Publishing, 1989 |
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AIP Publishing, 1989 |
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karpenko1989parametersofahighsensitivexrayimagingdetectoronthebasisofanelectroopticalimageintensifierandanimagevidiconabstract |
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1989 |
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AIP Publishing |
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Review of Scientific Instruments |
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49 |
| title |
Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_unstemmed |
Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_full |
Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_fullStr |
Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_full_unstemmed |
Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_short |
Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_sort |
parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| topic |
Instrumentation |
| url |
http://dx.doi.org/10.1063/1.1140759 |
| publishDate |
1989 |
| physical |
2334-2334 |
| description |
<jats:p>Since the early 1980s a tandem system consisting of an electrostatically focused image intensifier and an image vidicon has found extensive applications to visualization of the images formed by weak fluxes of x radiation. We present the result of measurements of some parameters of this complex linear video signal shaper (LVSS). The test x-ray image—x-ray lines dispersed in space by a single-crystal diffraction scheme (the projections of the linear focus of an x-ray tube) is directed onto a commercial one-stage image intensifier with electrostatic image focusing whose fiber-optics input window is covered by a luminophor to convert x radiation to light. The outlet of the image intensifier is fiber-optically coupled to the input fiber glass window of the commercial image vidicon (silicon intensifier target tube with intensifier section). The measurements performed on the device for absolute calibration of x-ray imaging detectors and x-ray counters (see the report at this Conference) have shown that the use of this LVSS permits one to record threshold flux densities of monoenergetic photons which are more than one order of magnitude lower than with the use of the image vidicon alone. Measurements of the dependence of the threshold flux density on the photon energy have been made. For example, for 8 keV (Cukα), when using gadolinium oxysulphide as the luminophor the threshold flux density is 20 times lower than for the image vidicon alone, and achieves 105 cm−2 s−1. At such a high sensitivity, detection of small-scale details of images with low brightness and contrast requires taking account of the noise of the radiation being detected, which is caused by the fluctuations of the photon flux. This LVSS visualizes light flashes caused by single hard x-ray photons and β particles which are incident upon the luminophor settled on the inlet window of the image intensifier. Both the x-ray images of the test objects and the luminescent flashes caused by photons and fast electrons are represented in digital form (see the report on multiframe digitization x-ray images at this Conference).</jats:p> |
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| author | Karpenko, V. A., Khil’chenko, A. D., Lysenko, A. P., Panchenko, V. E. |
| author_facet | Karpenko, V. A., Khil’chenko, A. D., Lysenko, A. P., Panchenko, V. E., Karpenko, V. A., Khil’chenko, A. D., Lysenko, A. P., Panchenko, V. E. |
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| description | <jats:p>Since the early 1980s a tandem system consisting of an electrostatically focused image intensifier and an image vidicon has found extensive applications to visualization of the images formed by weak fluxes of x radiation. We present the result of measurements of some parameters of this complex linear video signal shaper (LVSS). The test x-ray image—x-ray lines dispersed in space by a single-crystal diffraction scheme (the projections of the linear focus of an x-ray tube) is directed onto a commercial one-stage image intensifier with electrostatic image focusing whose fiber-optics input window is covered by a luminophor to convert x radiation to light. The outlet of the image intensifier is fiber-optically coupled to the input fiber glass window of the commercial image vidicon (silicon intensifier target tube with intensifier section). The measurements performed on the device for absolute calibration of x-ray imaging detectors and x-ray counters (see the report at this Conference) have shown that the use of this LVSS permits one to record threshold flux densities of monoenergetic photons which are more than one order of magnitude lower than with the use of the image vidicon alone. Measurements of the dependence of the threshold flux density on the photon energy have been made. For example, for 8 keV (Cukα), when using gadolinium oxysulphide as the luminophor the threshold flux density is 20 times lower than for the image vidicon alone, and achieves 105 cm−2 s−1. At such a high sensitivity, detection of small-scale details of images with low brightness and contrast requires taking account of the noise of the radiation being detected, which is caused by the fluctuations of the photon flux. This LVSS visualizes light flashes caused by single hard x-ray photons and β particles which are incident upon the luminophor settled on the inlet window of the image intensifier. Both the x-ray images of the test objects and the luminescent flashes caused by photons and fast electrons are represented in digital form (see the report on multiframe digitization x-ray images at this Conference).</jats:p> |
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| spelling | Karpenko, V. A. Khil’chenko, A. D. Lysenko, A. P. Panchenko, V. E. 0034-6748 1089-7623 AIP Publishing Instrumentation http://dx.doi.org/10.1063/1.1140759 <jats:p>Since the early 1980s a tandem system consisting of an electrostatically focused image intensifier and an image vidicon has found extensive applications to visualization of the images formed by weak fluxes of x radiation. We present the result of measurements of some parameters of this complex linear video signal shaper (LVSS). The test x-ray image—x-ray lines dispersed in space by a single-crystal diffraction scheme (the projections of the linear focus of an x-ray tube) is directed onto a commercial one-stage image intensifier with electrostatic image focusing whose fiber-optics input window is covered by a luminophor to convert x radiation to light. The outlet of the image intensifier is fiber-optically coupled to the input fiber glass window of the commercial image vidicon (silicon intensifier target tube with intensifier section). The measurements performed on the device for absolute calibration of x-ray imaging detectors and x-ray counters (see the report at this Conference) have shown that the use of this LVSS permits one to record threshold flux densities of monoenergetic photons which are more than one order of magnitude lower than with the use of the image vidicon alone. Measurements of the dependence of the threshold flux density on the photon energy have been made. For example, for 8 keV (Cukα), when using gadolinium oxysulphide as the luminophor the threshold flux density is 20 times lower than for the image vidicon alone, and achieves 105 cm−2 s−1. At such a high sensitivity, detection of small-scale details of images with low brightness and contrast requires taking account of the noise of the radiation being detected, which is caused by the fluctuations of the photon flux. This LVSS visualizes light flashes caused by single hard x-ray photons and β particles which are incident upon the luminophor settled on the inlet window of the image intensifier. Both the x-ray images of the test objects and the luminescent flashes caused by photons and fast electrons are represented in digital form (see the report on multiframe digitization x-ray images at this Conference).</jats:p> Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) Review of Scientific Instruments |
| spellingShingle | Karpenko, V. A., Khil’chenko, A. D., Lysenko, A. P., Panchenko, V. E., Review of Scientific Instruments, Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract), Instrumentation |
| title | Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_full | Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_fullStr | Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_full_unstemmed | Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_short | Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_sort | parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| title_unstemmed | Parameters of a high-sensitive x-ray imaging detector on the basis of an electro-optical image intensifier and an image vidicon (abstract) |
| topic | Instrumentation |
| url | http://dx.doi.org/10.1063/1.1140759 |