This paper presents the results of laser-induced-pressure-pulse (LIPP) measurements of space charge accumulation in 0.5 mm thick planar XLPE samples with aluminium electrodes, over the temperature range 30–90°C. The applied field strength was 10 kV mm−1. The increase in transit time of the pressure pulse across the sample with increasing temperature indicated that Young's modulus decreased by 50% from 30 to 90°C. It was concluded that electrons injected at the cathode are transported to the anode at temperatures above 40°C, and that electron traps cause an accumulation of negative charge immediately adjacent to both cathode and anode. It appears that a concentration of impurity molecules accumulates close to the cathode, and field-assisted thermal ionisation of these molecules generates an immobile positive space charge adjoining the electronic space charge adjacent to the cathode.
{"title":"The temperature dependence of space charge accumulation in cross-linked polyethylene","authors":"K. Bambery, R. Fleming","doi":"10.1109/ISE.1996.578031","DOIUrl":"https://doi.org/10.1109/ISE.1996.578031","url":null,"abstract":"This paper presents the results of laser-induced-pressure-pulse (LIPP) measurements of space charge accumulation in 0.5 mm thick planar XLPE samples with aluminium electrodes, over the temperature range 30–90°C. The applied field strength was 10 kV mm−1. The increase in transit time of the pressure pulse across the sample with increasing temperature indicated that Young's modulus decreased by 50% from 30 to 90°C. It was concluded that electrons injected at the cathode are transported to the anode at temperatures above 40°C, and that electron traps cause an accumulation of negative charge immediately adjacent to both cathode and anode. It appears that a concentration of impurity molecules accumulates close to the cathode, and field-assisted thermal ionisation of these molecules generates an immobile positive space charge adjoining the electronic space charge adjacent to the cathode.","PeriodicalId":17333,"journal":{"name":"Journal of thermal analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82179188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-11-15DOI: 10.1016/S0040-6031(96)03071-7
L. Thomas, A. Boller, I. Okazaki, B. Wunderlich
{"title":"Modulated differential scanning calorimetry in the glass transition region","authors":"L. Thomas, A. Boller, I. Okazaki, B. Wunderlich","doi":"10.1016/S0040-6031(96)03071-7","DOIUrl":"https://doi.org/10.1016/S0040-6031(96)03071-7","url":null,"abstract":"","PeriodicalId":17333,"journal":{"name":"Journal of thermal analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86071691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analyse thermogravimetrique et fraudes sur les origines dans la fabrication des fromages","authors":"J. M. Resa, T. Quintana","doi":"10.1007/BF02549965","DOIUrl":"https://doi.org/10.1007/BF02549965","url":null,"abstract":"","PeriodicalId":17333,"journal":{"name":"Journal of thermal analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88326980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Thermodynamics of coupled reactions by the amplitudes of chemical relaxation","authors":"F. Secco, M. Venturini","doi":"10.1007/BF02549964","DOIUrl":"https://doi.org/10.1007/BF02549964","url":null,"abstract":"","PeriodicalId":17333,"journal":{"name":"Journal of thermal analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86666320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Thermal conductivity analysis of polymeric crystal by mirage effect","authors":"X. Quélin, G. Louis, P. Peretti","doi":"10.1007/BF02549963","DOIUrl":"https://doi.org/10.1007/BF02549963","url":null,"abstract":"","PeriodicalId":17333,"journal":{"name":"Journal of thermal analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74915848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Thermal standards from the laboratory of the government chemist","authors":"B. Joseph","doi":"10.1007/BF02546910","DOIUrl":"https://doi.org/10.1007/BF02546910","url":null,"abstract":"","PeriodicalId":17333,"journal":{"name":"Journal of thermal analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79774928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Introduction to the work of the ICTAC Committee on Standardisation","authors":"E. Charsley","doi":"10.1007/BF02546903","DOIUrl":"https://doi.org/10.1007/BF02546903","url":null,"abstract":"","PeriodicalId":17333,"journal":{"name":"Journal of thermal analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82859407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. Charsley, C. M. Earnest, P. K. Gallagher, M. J. Richardson
{"title":"Preliminary round-robin studies on the ICTAC certified reference materials for DTA","authors":"E. Charsley, C. M. Earnest, P. K. Gallagher, M. J. Richardson","doi":"10.1007/BF02546905","DOIUrl":"https://doi.org/10.1007/BF02546905","url":null,"abstract":"","PeriodicalId":17333,"journal":{"name":"Journal of thermal analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86659502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. K. Gallagher, Z. Zhong, E. Charsley, S. Mikhail, M. Todoki, K. Taniguahi, R. Blaine
{"title":"A study of the effect of purity on the use of nickel as a temperature standard for thermomagnetometry","authors":"P. K. Gallagher, Z. Zhong, E. Charsley, S. Mikhail, M. Todoki, K. Taniguahi, R. Blaine","doi":"10.1007/BF02546906","DOIUrl":"https://doi.org/10.1007/BF02546906","url":null,"abstract":"","PeriodicalId":17333,"journal":{"name":"Journal of thermal analysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82582533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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