Radiation induced electromotive force in mineral insulated cable under reactor irradiation

Tatsuo Shikama, Minoru Narui, Tsutomu Sagawa

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A radiation induced electromotive force (RIEMF) was measured in mineral insulated cables (MI-cables) under fission reactor irradiation. A negative electromotive force of about 10 V was generated in the center lead by the reactor irradiation. The RIEMF increased with increasing irradiation dose with about - 14 V measured under the reactor full power irradiation at 573 K with a total dose of 1.1 × 1010 Gy ionizing irradiation and 1.1 × 1024 n/m2 fast neutron irradiation. The measured voltage of the RIEMF was found to depend linearly on the reciprocal temperature. The observed RIEMF was a so-called current driven source and the measured current was linearly dependent on the reactor power and was about 50 nA for the 0.7 m long MI-cables at 573 K. Under full power, irradiation conditions were 6 W/g of a gamma flux (6 × 103 Gy/s ionizing dose rate) for iron and 5 × 1017 n/m2s and 1.1 × 1018 n/m2s fast and thermal neutron fluxes, respectively.

Original languageEnglish
Pages (from-to)650-656
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume122
Issue number4
DOIs
Publication statusPublished - 1997 Jan 1

Keywords

  • Diagnostic components
  • Mineral insulated cable
  • Radiation induced electromotive force
  • Reactor irradiation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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