섬유

radiation-induced conductivity in foamed dielectrics

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 325
through observation of radiation-induced current transients which occur in foamed insulators (foamed silica, epoxy resin, and common cotton wool) when exposed to a pulse (40 ns) electron irradiation in vacuum and in air the authors show that hot electrons ( $less than$ 30ev) are responsible for a vacuum response while the conventional transport mechanism prevails at air irradiation. a slightly superlinear i-u characteristic, polarization phenomena, absence of delayed conductivity and linear scaling with dose rate are consistent with hot electrons drifting in voids. foamed silica has a vacuum response which is much higher than in typical polymers and exceeds that measured in air. 24 refs
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