Temperature Dependence of Radiation Induced Conductivity in Insulators
This study measures Radiation Induced Conductivity (RIC) of Low Density Polyethylene (LDPE) over temperatures ranging from ~110 K to ~350 K. RIC occurs when incident ionizing radiation deposits energy and excites electrons into the conduction band of insulators. Conductivity was measured when a volt...
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| creator | Dennison, J R Gillespie, Jodie Hodges, Joshua Hoffmann, R C Abbott, J Hart, Steven Hunt, Alan W |
| description | This study measures Radiation Induced Conductivity (RIC) of Low Density Polyethylene (LDPE) over temperatures ranging from ~110 K to ~350 K. RIC occurs when incident ionizing radiation deposits energy and excites electrons into the conduction band of insulators. Conductivity was measured when a voltage was applied across vacuum-baked, thin film LDPE polymer samples in a parallel plate geometry. RIC was calculated as the difference in sample conductivity under no incident radiation and under an incident ~4 MeV electron beam at low incident fluxes of 10-4-10-1 Gr/sec. The steady-state RIC was found to agree well with the standard power law relation, sRIC = kRIC*DD between conductivity, s and adsorbed dose rate, '. Both the proportionality constant, kRIC, and the power, d, were found to be temperature dependant above ~250 K, with behavior consistent with photoconductivity models developed for localized trap states in disordered semiconductors. Below ~250 K, kRIC and D exhibited little change. The observed difference in temperature dependence might be related to a structural phase transition seen at Tb~256 K in prior studies of mechanical and thermodynamic properties of LDPE. |
| doi_str_mv | 10.1063/1.3120015 |
| format | Conference Proceeding |
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RIC occurs when incident ionizing radiation deposits energy and excites electrons into the conduction band of insulators. Conductivity was measured when a voltage was applied across vacuum-baked, thin film LDPE polymer samples in a parallel plate geometry. RIC was calculated as the difference in sample conductivity under no incident radiation and under an incident ~4 MeV electron beam at low incident fluxes of 10-4-10-1 Gr/sec. The steady-state RIC was found to agree well with the standard power law relation, sRIC = kRIC*DD between conductivity, s and adsorbed dose rate, '. Both the proportionality constant, kRIC, and the power, d, were found to be temperature dependant above ~250 K, with behavior consistent with photoconductivity models developed for localized trap states in disordered semiconductors. Below ~250 K, kRIC and D exhibited little change. The observed difference in temperature dependence might be related to a structural phase transition seen at Tb~256 K in prior studies of mechanical and thermodynamic properties of LDPE.</description><identifier>ISSN: 0094-243X</identifier><identifier>ISBN: 9780735406339</identifier><identifier>ISBN: 0735406332</identifier><identifier>EISSN: 1551-7616</identifier><identifier>DOI: 10.1063/1.3120015</identifier><language>eng</language><publisher>United States</publisher><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; DIELECTRIC MATERIALS ; ELECTRON BEAMS ; IONIC CONDUCTIVITY ; IRRADIATION ; MEV RANGE ; PHASE TRANSFORMATIONS ; PHOTOCONDUCTIVITY ; PHYSICAL RADIATION EFFECTS ; POLYETHYLENES ; SEMICONDUCTOR MATERIALS ; TEMPERATURE DEPENDENCE ; THERMODYNAMIC PROPERTIES ; THIN FILMS ; TRAPS</subject><ispartof>AIP conference proceedings, 2009, Vol.1099 (1), p.203-210</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/21289522$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Dennison, J R</creatorcontrib><creatorcontrib>Gillespie, Jodie</creatorcontrib><creatorcontrib>Hodges, Joshua</creatorcontrib><creatorcontrib>Hoffmann, R C</creatorcontrib><creatorcontrib>Abbott, J</creatorcontrib><creatorcontrib>Hart, Steven</creatorcontrib><creatorcontrib>Hunt, Alan W</creatorcontrib><title>Temperature Dependence of Radiation Induced Conductivity in Insulators</title><title>AIP conference proceedings</title><description>This study measures Radiation Induced Conductivity (RIC) of Low Density Polyethylene (LDPE) over temperatures ranging from ~110 K to ~350 K. RIC occurs when incident ionizing radiation deposits energy and excites electrons into the conduction band of insulators. Conductivity was measured when a voltage was applied across vacuum-baked, thin film LDPE polymer samples in a parallel plate geometry. RIC was calculated as the difference in sample conductivity under no incident radiation and under an incident ~4 MeV electron beam at low incident fluxes of 10-4-10-1 Gr/sec. The steady-state RIC was found to agree well with the standard power law relation, sRIC = kRIC*DD between conductivity, s and adsorbed dose rate, '. Both the proportionality constant, kRIC, and the power, d, were found to be temperature dependant above ~250 K, with behavior consistent with photoconductivity models developed for localized trap states in disordered semiconductors. Below ~250 K, kRIC and D exhibited little change. The observed difference in temperature dependence might be related to a structural phase transition seen at Tb~256 K in prior studies of mechanical and thermodynamic properties of LDPE.</description><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>DIELECTRIC MATERIALS</subject><subject>ELECTRON BEAMS</subject><subject>IONIC CONDUCTIVITY</subject><subject>IRRADIATION</subject><subject>MEV RANGE</subject><subject>PHASE TRANSFORMATIONS</subject><subject>PHOTOCONDUCTIVITY</subject><subject>PHYSICAL RADIATION EFFECTS</subject><subject>POLYETHYLENES</subject><subject>SEMICONDUCTOR MATERIALS</subject><subject>TEMPERATURE DEPENDENCE</subject><subject>THERMODYNAMIC PROPERTIES</subject><subject>THIN FILMS</subject><subject>TRAPS</subject><issn>0094-243X</issn><issn>1551-7616</issn><isbn>9780735406339</isbn><isbn>0735406332</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2009</creationdate><recordtype>conference_proceeding</recordtype><recordid>eNotkF1LwzAYhYMf4Jy78B8UBO868-arzaVMp4OBIBO8K2n6BiNdMptU8N9bmVfncHh4Lg4h10CXQBW_gyUHRinIEzIDKaGsFKhTstBVTSsuxcRwfUZmlGpRMsHfL8hlSp-UMl1V9Yysd7g_4GDyOGDxgAcMHQaLRXTFq-m8yT6GYhO60WJXrOJfyf7b55_C_-1p7E2OQ7oi5870CRf_OSdv68fd6rncvjxtVvfbMjIQubQKKmo7rhywulVOWceZBmiFZprX1gqBAJSbSkrB2k6aVtbaQetM62hX8zm5OXpjyr5J1me0HzaGgDY3bJJqydhE3R6pwxC_Rky52ftkse9NwDimZrqETV8I_gtV8Vx5</recordid><startdate>20090101</startdate><enddate>20090101</enddate><creator>Dennison, J R</creator><creator>Gillespie, Jodie</creator><creator>Hodges, Joshua</creator><creator>Hoffmann, R C</creator><creator>Abbott, J</creator><creator>Hart, Steven</creator><creator>Hunt, Alan W</creator><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20090101</creationdate><title>Temperature Dependence of Radiation Induced Conductivity in Insulators</title><author>Dennison, J R ; Gillespie, Jodie ; Hodges, Joshua ; Hoffmann, R C ; Abbott, J ; Hart, Steven ; Hunt, Alan W</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-o214t-c6170cd36f128b6f6cf32911b492938cc44e1103a75542bd5ab589f1bfabf0d83</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2009</creationdate><topic>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</topic><topic>DIELECTRIC MATERIALS</topic><topic>ELECTRON BEAMS</topic><topic>IONIC CONDUCTIVITY</topic><topic>IRRADIATION</topic><topic>MEV RANGE</topic><topic>PHASE TRANSFORMATIONS</topic><topic>PHOTOCONDUCTIVITY</topic><topic>PHYSICAL RADIATION EFFECTS</topic><topic>POLYETHYLENES</topic><topic>SEMICONDUCTOR MATERIALS</topic><topic>TEMPERATURE DEPENDENCE</topic><topic>THERMODYNAMIC PROPERTIES</topic><topic>THIN FILMS</topic><topic>TRAPS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dennison, J R</creatorcontrib><creatorcontrib>Gillespie, Jodie</creatorcontrib><creatorcontrib>Hodges, Joshua</creatorcontrib><creatorcontrib>Hoffmann, R C</creatorcontrib><creatorcontrib>Abbott, J</creatorcontrib><creatorcontrib>Hart, Steven</creatorcontrib><creatorcontrib>Hunt, Alan W</creatorcontrib><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dennison, J R</au><au>Gillespie, Jodie</au><au>Hodges, Joshua</au><au>Hoffmann, R C</au><au>Abbott, J</au><au>Hart, Steven</au><au>Hunt, Alan W</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Temperature Dependence of Radiation Induced Conductivity in Insulators</atitle><btitle>AIP conference proceedings</btitle><date>2009-01-01</date><risdate>2009</risdate><volume>1099</volume><issue>1</issue><spage>203</spage><epage>210</epage><pages>203-210</pages><issn>0094-243X</issn><eissn>1551-7616</eissn><isbn>9780735406339</isbn><isbn>0735406332</isbn><abstract>This study measures Radiation Induced Conductivity (RIC) of Low Density Polyethylene (LDPE) over temperatures ranging from ~110 K to ~350 K. RIC occurs when incident ionizing radiation deposits energy and excites electrons into the conduction band of insulators. Conductivity was measured when a voltage was applied across vacuum-baked, thin film LDPE polymer samples in a parallel plate geometry. RIC was calculated as the difference in sample conductivity under no incident radiation and under an incident ~4 MeV electron beam at low incident fluxes of 10-4-10-1 Gr/sec. The steady-state RIC was found to agree well with the standard power law relation, sRIC = kRIC*DD between conductivity, s and adsorbed dose rate, '. Both the proportionality constant, kRIC, and the power, d, were found to be temperature dependant above ~250 K, with behavior consistent with photoconductivity models developed for localized trap states in disordered semiconductors. Below ~250 K, kRIC and D exhibited little change. The observed difference in temperature dependence might be related to a structural phase transition seen at Tb~256 K in prior studies of mechanical and thermodynamic properties of LDPE.</abstract><cop>United States</cop><doi>10.1063/1.3120015</doi><tpages>8</tpages></addata></record> |
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| identifier | ISSN: 0094-243X |
| ispartof | AIP conference proceedings, 2009, Vol.1099 (1), p.203-210 |
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| language | eng |
| recordid | cdi_osti_scitechconnect_21289522 |
| source | AIP Journals Complete |
| subjects | CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY DIELECTRIC MATERIALS ELECTRON BEAMS IONIC CONDUCTIVITY IRRADIATION MEV RANGE PHASE TRANSFORMATIONS PHOTOCONDUCTIVITY PHYSICAL RADIATION EFFECTS POLYETHYLENES SEMICONDUCTOR MATERIALS TEMPERATURE DEPENDENCE THERMODYNAMIC PROPERTIES THIN FILMS TRAPS |
| title | Temperature Dependence of Radiation Induced Conductivity in Insulators |
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