Development of positron annihilation spectroscopy for investigating deuterium decorated voids in neutron-irradiated tungsten
The present work is a continuation of a recent research to develop and optimize positron annihilation spectroscopy (PAS) for characterizing neutron-irradiated tungsten. Tungsten samples were exposed to neutrons in the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory and damaged to 0...
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| Veröffentlicht in: | Journal of nuclear materials 2015-08, Vol.463 (C), p.1009-1012 |
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| container_issue | C |
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| container_title | Journal of nuclear materials |
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| creator | Taylor, C.N. Shimada, M. Merrill, B.J. Akers, D.W. Hatano, Y. |
| description | The present work is a continuation of a recent research to develop and optimize positron annihilation spectroscopy (PAS) for characterizing neutron-irradiated tungsten. Tungsten samples were exposed to neutrons in the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory and damaged to 0.025 and 0.3dpa. Subsequently, they were exposed to deuterium plasmas in the Tritium Plasma Experiment (TPE) at Idaho National Laboratory. The implanted deuterium was desorbed through sample heating to 900°C, and Doppler broadening (DB)-PAS was performed both before and after heating. Results show that deuterium impregnated tungsten is identified as having a smaller S-parameter. The S-parameter increases after deuterium desorption. Microstructural changes also occur during sample heating. These effects can be isolated from deuterium desorption by comparing the S-parameters from the deuterium-free back face with the deuterium-implanted front face. The application of using DB-PAS to examine deuterium retention in tungsten is examined. |
| doi_str_mv | 10.1016/j.jnucmat.2014.11.033 |
| format | Article |
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Tungsten samples were exposed to neutrons in the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory and damaged to 0.025 and 0.3dpa. Subsequently, they were exposed to deuterium plasmas in the Tritium Plasma Experiment (TPE) at Idaho National Laboratory. The implanted deuterium was desorbed through sample heating to 900°C, and Doppler broadening (DB)-PAS was performed both before and after heating. Results show that deuterium impregnated tungsten is identified as having a smaller S-parameter. The S-parameter increases after deuterium desorption. Microstructural changes also occur during sample heating. These effects can be isolated from deuterium desorption by comparing the S-parameters from the deuterium-free back face with the deuterium-implanted front face. 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The application of using DB-PAS to examine deuterium retention in tungsten is examined.</description><subject>Desorption</subject><subject>Deuterium</subject><subject>Doppler effect</subject><subject>Exposure</subject><subject>Heating</subject><subject>High flux isotope reactors</subject><subject>Positron annihilation spectroscopy</subject><subject>Tungsten</subject><issn>0022-3115</issn><issn>1873-4820</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqNkcuO1DAQRSMEEs3AJyBFrNgkVPmV9Aqh4SmNxAbWltuu9LiV2MF2WhqJj8dNzx5WftxTpVt1m-Y1Qo-A6t2pP4XNLqb0DFD0iD1w_qTZ4TjwTowMnjY7AMY6jiifNy9yPgGA3IPcNb8_0pnmuC4UShundo3ZlxRDa0Lw9342xddHXsnW32zj-tBOMbU-nCkXf6xyOLaOtkLJb0u92ZhMIdeeo3e5cm2oYm3Y-ZSM83-1soVjLhReNs8mM2d69XjeND8_f_px-7W7-_7l2-2Hu85KlKXjAwp2MBMeFAnBzABGTmIPwsE0SrdXCodJyb0BpzgI5VAdDCc5SWTcMMtvmjfXvrF61tn6QvbexhDqVBqZZIzJCr29QmuKv7Y6nV58tjTPJlDcssZhAA4DwPgfqFDjqATDisorauv6cqJJr8kvJj1oBH1JT5_0Y3r6kp5G1DW9Wvf-Wkd1L2dP6WKbgiXn08W1i_4fHf4AqQuoYA</recordid><startdate>20150801</startdate><enddate>20150801</enddate><creator>Taylor, C.N.</creator><creator>Shimada, M.</creator><creator>Merrill, B.J.</creator><creator>Akers, D.W.</creator><creator>Hatano, Y.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7SR</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20150801</creationdate><title>Development of positron annihilation spectroscopy for investigating deuterium decorated voids in neutron-irradiated tungsten</title><author>Taylor, C.N. ; Shimada, M. ; Merrill, B.J. ; Akers, D.W. ; Hatano, Y.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c515t-37142baf1b6e442a70a5f4904d0f85d96617f659a0d63046d16ba3e5f5123a2c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Desorption</topic><topic>Deuterium</topic><topic>Doppler effect</topic><topic>Exposure</topic><topic>Heating</topic><topic>High flux isotope reactors</topic><topic>Positron annihilation spectroscopy</topic><topic>Tungsten</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Taylor, C.N.</creatorcontrib><creatorcontrib>Shimada, M.</creatorcontrib><creatorcontrib>Merrill, B.J.</creatorcontrib><creatorcontrib>Akers, D.W.</creatorcontrib><creatorcontrib>Hatano, Y.</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Journal of nuclear materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Taylor, C.N.</au><au>Shimada, M.</au><au>Merrill, B.J.</au><au>Akers, D.W.</au><au>Hatano, Y.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Development of positron annihilation spectroscopy for investigating deuterium decorated voids in neutron-irradiated tungsten</atitle><jtitle>Journal of nuclear materials</jtitle><date>2015-08-01</date><risdate>2015</risdate><volume>463</volume><issue>C</issue><spage>1009</spage><epage>1012</epage><pages>1009-1012</pages><issn>0022-3115</issn><eissn>1873-4820</eissn><abstract>The present work is a continuation of a recent research to develop and optimize positron annihilation spectroscopy (PAS) for characterizing neutron-irradiated tungsten. Tungsten samples were exposed to neutrons in the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory and damaged to 0.025 and 0.3dpa. Subsequently, they were exposed to deuterium plasmas in the Tritium Plasma Experiment (TPE) at Idaho National Laboratory. The implanted deuterium was desorbed through sample heating to 900°C, and Doppler broadening (DB)-PAS was performed both before and after heating. Results show that deuterium impregnated tungsten is identified as having a smaller S-parameter. The S-parameter increases after deuterium desorption. Microstructural changes also occur during sample heating. These effects can be isolated from deuterium desorption by comparing the S-parameters from the deuterium-free back face with the deuterium-implanted front face. 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| subjects | Desorption Deuterium Doppler effect Exposure Heating High flux isotope reactors Positron annihilation spectroscopy Tungsten |
| title | Development of positron annihilation spectroscopy for investigating deuterium decorated voids in neutron-irradiated tungsten |
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