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Quantification of Cement Hydration through Neutron Radiography with Scatter Rejection
The unique capabilities of neutrons to penetrate materials opaque to X-rays and at the same time to interact with hydrogen make neutron radiography a technique of choice for the nondestructive quantification of hydrogen-containing substances. However, scattering rather than absorption of neutrons by...
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Published in: | IEEE transactions on nuclear science 2015-06, Vol.62 (3), p.1288-1294 |
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container_title | IEEE transactions on nuclear science |
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creator | Tremsin, Anton S. Lehmann, Eberhard H. McPhate, Jason B. Vallerga, John V. Siegmund, Oswald H. W. White, Brian White, Paul Feller, W. Bruce de Beer, Frikkie C. Kockelmann, Winfried |
description | The unique capabilities of neutrons to penetrate materials opaque to X-rays and at the same time to interact with hydrogen make neutron radiography a technique of choice for the nondestructive quantification of hydrogen-containing substances. However, scattering rather than absorption of neutrons by hydrogen atoms can substantially decrease the accuracy of this quantification. Various post-experiment data processing techniques were developed to correct and mitigate the effects of scattering. A complementary "hardware" solution is to simply eliminate the detrimental scattering component from the detected signal through the use of neutron collimators. Compact polycapillary collimators, merely a few millimeters thick, enable accurate, high spatial resolution quantification for a wide range of neutron scattering materials. This paper demonstrates the improved quantification of water absorption with sub- 100 μm spatial resolution in 1 ×1×2 cm 3 Portland cement samples. A compact polycapillary neutron collimator (2 mm thick) was used for scatter rejection in our experiments. The results of these measurements indicate that such devices can be attractive for studies where samples must be placed in quite close proximity (e.g., only a few centimeters or closer) from the neutron detector active surface. |
doi_str_mv | 10.1109/TNS.2015.2428231 |
format | article |
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A complementary "hardware" solution is to simply eliminate the detrimental scattering component from the detected signal through the use of neutron collimators. Compact polycapillary collimators, merely a few millimeters thick, enable accurate, high spatial resolution quantification for a wide range of neutron scattering materials. This paper demonstrates the improved quantification of water absorption with sub- 100 μm spatial resolution in 1 ×1×2 cm 3 Portland cement samples. A compact polycapillary neutron collimator (2 mm thick) was used for scatter rejection in our experiments. 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A complementary "hardware" solution is to simply eliminate the detrimental scattering component from the detected signal through the use of neutron collimators. Compact polycapillary collimators, merely a few millimeters thick, enable accurate, high spatial resolution quantification for a wide range of neutron scattering materials. This paper demonstrates the improved quantification of water absorption with sub- 100 μm spatial resolution in 1 ×1×2 cm 3 Portland cement samples. A compact polycapillary neutron collimator (2 mm thick) was used for scatter rejection in our experiments. The results of these measurements indicate that such devices can be attractive for studies where samples must be placed in quite close proximity (e.g., only a few centimeters or closer) from the neutron detector active surface.</description><subject>Accuracy</subject><subject>Attenuation</subject><subject>Cement water absorption</subject><subject>Collimators</subject><subject>Detectors</subject><subject>neutron optics</subject><subject>neutron radiography</subject><subject>Neutrons</subject><subject>scatter rejection</subject><subject>Scattering</subject><subject>Wavelength measurement</subject><issn>0018-9499</issn><issn>1558-1578</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNo9kE1LAzEQhoMoWKt3wUv-wNZMPnaToxS1QqnYj_OSZifdFNst2RTpvzel4ml4X-aZgYeQR2AjAGael7PFiDNQIy655gKuyACU0gWoSl-TAWOgCyONuSV3fb_NUSqmBmT1dbT7FHxwNoVuTztPx7jDfaKTUxMvXWpjd9y0dIbHFHOe2yZ0m2gP7Yn-hNTSRYYTRjrHLbozck9uvP3u8eFvDsnq7XU5nhTTz_eP8cu0cFKqVFRSSb22TWOkRCVsCQAVE8yytXeOlY3gleIWSosMDMu9cd75RmiDJS-1GBJ2ueti1_cRfX2IYWfjqQZWn7XUWUt91lL_acnI0wUJiPi_XuXPojLiFwX8X0c</recordid><startdate>20150601</startdate><enddate>20150601</enddate><creator>Tremsin, Anton S.</creator><creator>Lehmann, Eberhard H.</creator><creator>McPhate, Jason B.</creator><creator>Vallerga, John V.</creator><creator>Siegmund, Oswald H. W.</creator><creator>White, Brian</creator><creator>White, Paul</creator><creator>Feller, W. Bruce</creator><creator>de Beer, Frikkie C.</creator><creator>Kockelmann, Winfried</creator><general>IEEE</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20150601</creationdate><title>Quantification of Cement Hydration through Neutron Radiography with Scatter Rejection</title><author>Tremsin, Anton S. ; Lehmann, Eberhard H. ; McPhate, Jason B. ; Vallerga, John V. ; Siegmund, Oswald H. W. ; White, Brian ; White, Paul ; Feller, W. 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W.</creatorcontrib><creatorcontrib>White, Brian</creatorcontrib><creatorcontrib>White, Paul</creatorcontrib><creatorcontrib>Feller, W. Bruce</creatorcontrib><creatorcontrib>de Beer, Frikkie C.</creatorcontrib><creatorcontrib>Kockelmann, Winfried</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998–Present</collection><collection>IEEE Electronic Library Online</collection><collection>CrossRef</collection><jtitle>IEEE transactions on nuclear science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tremsin, Anton S.</au><au>Lehmann, Eberhard H.</au><au>McPhate, Jason B.</au><au>Vallerga, John V.</au><au>Siegmund, Oswald H. W.</au><au>White, Brian</au><au>White, Paul</au><au>Feller, W. Bruce</au><au>de Beer, Frikkie C.</au><au>Kockelmann, Winfried</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quantification of Cement Hydration through Neutron Radiography with Scatter Rejection</atitle><jtitle>IEEE transactions on nuclear science</jtitle><stitle>TNS</stitle><date>2015-06-01</date><risdate>2015</risdate><volume>62</volume><issue>3</issue><spage>1288</spage><epage>1294</epage><pages>1288-1294</pages><issn>0018-9499</issn><eissn>1558-1578</eissn><coden>IETNAE</coden><abstract>The unique capabilities of neutrons to penetrate materials opaque to X-rays and at the same time to interact with hydrogen make neutron radiography a technique of choice for the nondestructive quantification of hydrogen-containing substances. However, scattering rather than absorption of neutrons by hydrogen atoms can substantially decrease the accuracy of this quantification. Various post-experiment data processing techniques were developed to correct and mitigate the effects of scattering. A complementary "hardware" solution is to simply eliminate the detrimental scattering component from the detected signal through the use of neutron collimators. Compact polycapillary collimators, merely a few millimeters thick, enable accurate, high spatial resolution quantification for a wide range of neutron scattering materials. This paper demonstrates the improved quantification of water absorption with sub- 100 μm spatial resolution in 1 ×1×2 cm 3 Portland cement samples. A compact polycapillary neutron collimator (2 mm thick) was used for scatter rejection in our experiments. The results of these measurements indicate that such devices can be attractive for studies where samples must be placed in quite close proximity (e.g., only a few centimeters or closer) from the neutron detector active surface.</abstract><pub>IEEE</pub><doi>10.1109/TNS.2015.2428231</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Accuracy Attenuation Cement water absorption Collimators Detectors neutron optics neutron radiography Neutrons scatter rejection Scattering Wavelength measurement |
title | Quantification of Cement Hydration through Neutron Radiography with Scatter Rejection |
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