Response of lead metaniobate acoustic emission sensors to gamma irradiation

Keith Holbert, Sriram Sankaranarayanan, Steven S. McCready

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Piezoelectric (PE) acoustic emission (AE) sensors were exposed to hundreds of kGy from Co-60 gamma rays. Recalibration of gamma-irradiated sensors showed a sensitivity decline of 8.4% per 100 kGy. Exposure of lead metaniobate disc specimens, the sensor ferroelectric material, to ∼1 MGy revealed a capacitance increase and PE voltage (g33) coefficient decrease with gamma dose. The planar coupling factor (kp) and mechanical quality factor (Qm) exhibited small reductions. The AE sensors were also subjected to nuclear radiation from a pulse reactor.

Original languageEnglish (US)
Pages (from-to)2583-2590
Number of pages8
JournalIEEE Transactions on Nuclear Science
Volume52
Issue number6
DOIs
StatePublished - Dec 1 2005

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Keywords

  • Gamma radiation
  • Lead metaniobate
  • Piezoelectric transducers
  • Pulse reactor testing
  • Radiation effects

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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