Optimization of CCD‐based energy‐modulated x‐ray microtomography
Employing asymmetric Bragg reflection at the monochromator we obtain a wide and practically parallel synchrotron‐radiation beam which, when combined with the use of a CCD detector, enables us to perform chemically specific, high‐speed and high‐resolution tomography. We present recent results obtaine...
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| Veröffentlicht in: | Rev. Sci. Instrum.; (United States) 1989-07, Vol.60 (7), p.2478-2481 |
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| container_title | Rev. Sci. Instrum.; (United States) |
| container_volume | 60 |
| creator | Bonse, U. Nusshardt, R. Busch, F. Pahl, R. Johnson, Q. C. Kinney, J. H. Saroyan, R. A. Nichols, M. C. |
| description | Employing asymmetric Bragg reflection at the monochromator we obtain a wide and practically parallel synchrotron‐radiation beam which, when combined with the use of a CCD detector, enables us to perform chemically specific, high‐speed and high‐resolution tomography. We present recent results obtained with this new method. The actual resolution achieved was determined from the measured line‐spread function of the complete detection system which includes the CCD, the fluorescent screen, and the lens used for optical magnification. The modulation‐transfer function (MTF) calculated from the line‐spread function shows that with only twofold magnification and at 3% contrast detectability about 28 line pairs per mm are resolved. Extrapolating from this result we find that with an optical magnification of 7:1 about 100 line pairs per mm should be resolved. Ways to optimize the method further are discussed. |
| doi_str_mv | 10.1063/1.1140704 |
| format | Article |
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C. ; Kinney, J. H. ; Saroyan, R. A. ; Nichols, M. C.</creator><creatorcontrib>Bonse, U. ; Nusshardt, R. ; Busch, F. ; Pahl, R. ; Johnson, Q. C. ; Kinney, J. H. ; Saroyan, R. A. ; Nichols, M. C. ; Institute of Physics, University of Dortmund, Federal Republic of Germany (DE) ; Sandia National Laboratory, Livermore, California 94550 ; Lawrence Livermore National Laboratory, Livermore, California 94550</creatorcontrib><description>Employing asymmetric Bragg reflection at the monochromator we obtain a wide and practically parallel synchrotron‐radiation beam which, when combined with the use of a CCD detector, enables us to perform chemically specific, high‐speed and high‐resolution tomography. We present recent results obtained with this new method. The actual resolution achieved was determined from the measured line‐spread function of the complete detection system which includes the CCD, the fluorescent screen, and the lens used for optical magnification. The modulation‐transfer function (MTF) calculated from the line‐spread function shows that with only twofold magnification and at 3% contrast detectability about 28 line pairs per mm are resolved. Extrapolating from this result we find that with an optical magnification of 7:1 about 100 line pairs per mm should be resolved. 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C.</creatorcontrib><creatorcontrib>Kinney, J. H.</creatorcontrib><creatorcontrib>Saroyan, R. A.</creatorcontrib><creatorcontrib>Nichols, M. C.</creatorcontrib><creatorcontrib>Institute of Physics, University of Dortmund, Federal Republic of Germany (DE)</creatorcontrib><creatorcontrib>Sandia National Laboratory, Livermore, California 94550</creatorcontrib><creatorcontrib>Lawrence Livermore National Laboratory, Livermore, California 94550</creatorcontrib><title>Optimization of CCD‐based energy‐modulated x‐ray microtomography</title><title>Rev. Sci. Instrum.; (United States)</title><description>Employing asymmetric Bragg reflection at the monochromator we obtain a wide and practically parallel synchrotron‐radiation beam which, when combined with the use of a CCD detector, enables us to perform chemically specific, high‐speed and high‐resolution tomography. We present recent results obtained with this new method. The actual resolution achieved was determined from the measured line‐spread function of the complete detection system which includes the CCD, the fluorescent screen, and the lens used for optical magnification. The modulation‐transfer function (MTF) calculated from the line‐spread function shows that with only twofold magnification and at 3% contrast detectability about 28 line pairs per mm are resolved. Extrapolating from this result we find that with an optical magnification of 7:1 about 100 line pairs per mm should be resolved. Ways to optimize the method further are discussed.</description><subject>440300 - Miscellaneous Instruments- (-1989)</subject><subject>BRAGG REFLECTION</subject><subject>CHARGE-COUPLED DEVICES</subject><subject>DETECTION</subject><subject>DIAGNOSTIC TECHNIQUES</subject><subject>DORIS STORAGE RING</subject><subject>ELEMENTS</subject><subject>ENERGY RESOLUTION</subject><subject>EXPERIMENT PLANNING</subject><subject>GERMANIUM</subject><subject>METALS</subject><subject>MONOCHROMATORS</subject><subject>OPTICAL SYSTEMS</subject><subject>OPTIMIZATION</subject><subject>OTHER INSTRUMENTATION</subject><subject>PLANNING</subject><subject>RADIATION DETECTION</subject><subject>REFLECTION</subject><subject>RESOLUTION</subject><subject>SEMICONDUCTOR DEVICES</subject><subject>SEMIMETALS</subject><subject>SILICON</subject><subject>SPATIAL RESOLUTION</subject><subject>STORAGE RINGS</subject><subject>TOMOGRAPHY</subject><subject>X-RAY DETECTION</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><recordid>eNp9kMtKxDAUhoMoWEcXvkFxp9AxJ01vS6mOCgOz0XXIrTOVaVOSKNaVj-Az-iRmnEEXgmdz-A4fP4cfoVPAU8B5eglTAIoLTPdQBLiskiIn6T6KME5pkhe0PERHzj3hMBlAhGaLwbdd-8Z9a_rYNHFdX3--fwjutIp1r-1yDNgZ9bzmPpxeA1k-xl0rrfGmM0vLh9V4jA4avnb6ZLcn6HF281DfJfPF7X19NU9kSqhP8lIIUWpRVjSVZZZlEkiuVGCRcaJ1CoUGqEAUSuUNrzBuiAZCCq0aIRRNJ-hsm2ucb5mTrddyJU3fa-lZjikmZRak860UXnTO6oYNtu24HRlgtmmJAdu1FNyLrbvJ-i7hR34x9ldkg2r-k_8mfwEGSnj2</recordid><startdate>19890701</startdate><enddate>19890701</enddate><creator>Bonse, U.</creator><creator>Nusshardt, R.</creator><creator>Busch, F.</creator><creator>Pahl, R.</creator><creator>Johnson, Q. 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C.</creatorcontrib><creatorcontrib>Kinney, J. H.</creatorcontrib><creatorcontrib>Saroyan, R. A.</creatorcontrib><creatorcontrib>Nichols, M. C.</creatorcontrib><creatorcontrib>Institute of Physics, University of Dortmund, Federal Republic of Germany (DE)</creatorcontrib><creatorcontrib>Sandia National Laboratory, Livermore, California 94550</creatorcontrib><creatorcontrib>Lawrence Livermore National Laboratory, Livermore, California 94550</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Rev. Sci. Instrum.; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bonse, U.</au><au>Nusshardt, R.</au><au>Busch, F.</au><au>Pahl, R.</au><au>Johnson, Q. C.</au><au>Kinney, J. H.</au><au>Saroyan, R. A.</au><au>Nichols, M. C.</au><aucorp>Institute of Physics, University of Dortmund, Federal Republic of Germany (DE)</aucorp><aucorp>Sandia National Laboratory, Livermore, California 94550</aucorp><aucorp>Lawrence Livermore National Laboratory, Livermore, California 94550</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optimization of CCD‐based energy‐modulated x‐ray microtomography</atitle><jtitle>Rev. Sci. Instrum.; (United States)</jtitle><date>1989-07-01</date><risdate>1989</risdate><volume>60</volume><issue>7</issue><spage>2478</spage><epage>2481</epage><pages>2478-2481</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>Employing asymmetric Bragg reflection at the monochromator we obtain a wide and practically parallel synchrotron‐radiation beam which, when combined with the use of a CCD detector, enables us to perform chemically specific, high‐speed and high‐resolution tomography. We present recent results obtained with this new method. The actual resolution achieved was determined from the measured line‐spread function of the complete detection system which includes the CCD, the fluorescent screen, and the lens used for optical magnification. The modulation‐transfer function (MTF) calculated from the line‐spread function shows that with only twofold magnification and at 3% contrast detectability about 28 line pairs per mm are resolved. Extrapolating from this result we find that with an optical magnification of 7:1 about 100 line pairs per mm should be resolved. Ways to optimize the method further are discussed.</abstract><cop>United States</cop><doi>10.1063/1.1140704</doi><tpages>4</tpages></addata></record> |
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| ispartof | Rev. Sci. Instrum.; (United States), 1989-07, Vol.60 (7), p.2478-2481 |
| issn | 0034-6748 1089-7623 |
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| source | AIP Digital Archive |
| subjects | 440300 - Miscellaneous Instruments- (-1989) BRAGG REFLECTION CHARGE-COUPLED DEVICES DETECTION DIAGNOSTIC TECHNIQUES DORIS STORAGE RING ELEMENTS ENERGY RESOLUTION EXPERIMENT PLANNING GERMANIUM METALS MONOCHROMATORS OPTICAL SYSTEMS OPTIMIZATION OTHER INSTRUMENTATION PLANNING RADIATION DETECTION REFLECTION RESOLUTION SEMICONDUCTOR DEVICES SEMIMETALS SILICON SPATIAL RESOLUTION STORAGE RINGS TOMOGRAPHY X-RAY DETECTION |
| title | Optimization of CCD‐based energy‐modulated x‐ray microtomography |
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