On the Source of Noise in Gauge Traces in Geological Materials

POSTER

Abstract

It has been previously speculated that two distinct sources of noise in gauge traces in geological materials exist. These sources are straining of the gauge element through the non planarity of the shock front after it has passed through the polycrystalline material, and electromagnetic emission from piezoelectric minerals within the bulk material. Experiments have been conducted in materials of differing quartz content to show that the electromagnetic emission is indeed an issue. Further, mineral analysis data is presented to support the conclusion that gauge straining is also occurring.

Authors

  • C.H. Braithwaite

    • University of Cambridge, UK
    • Cavendish Laboratory, University of Cambridge, J.J. Thompson Avenue, CB3 0HE

  • D.J. Chapman

    • University of Cambridge, UK
    • University of Cambridge
    • Cavendish Laboratory, University of Cambridge, J.J. Thompson Avenue, CB3 0HE

  • J.E. Field

    • Cavendish Laboratory, University of Cambridge, J.J. Thompson Avenue, CB3 0HE

  • W.G. Proud

    • Fracture and Shock Physics, SMF Group, Cavendish Laboratory, JJ Thomson Ave., Cambridge, CB3 0HE
    • University of Cambridge
    • University of Cambridge, UK
    • Cavendish Laboratory, University of Cambridge, J.J. Thompson Avenue, CB3 0HE