Electronic detection of ultra-heavy nuclei by pyroelectric materials

Statistics – Applications

Scientific paper

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Cosmic Rays, Electronic Equipment, Heavy Nuclei, Pyroelectricity, Radiation Detectors, Charged Particles, Lithium Compounds, Mass Spectroscopy, Particle Telescopes, Polymeric Films

Scientific paper

A recent prediction by the authors that pyroelectric materials may be capable of detecting ultra-heavy nuclei has been confirmed. Charge pulse signals from pyroelectric crystals of lithium tantalate exposed to Au ions and a pulsed beam of Ni-58 ions, and from pyroelectric films of polyvinylidene fluoride exposed to a pulsed beam of Ni-58 ions, have been measured using pulse electronics with time constants in the microsecond range. These studies show that pyroelectric materials, in general, are capable of detecting incident nuclei having very high mass and charge. In particular, pyroelectric polymers, such as polyvinylidene fluoride, are readily available as inexpensive flexible films. This new class of charged particle detector could eventually find applications in large-area experiments for detection and trajectory determination of low-energy, ultra-heavy nuclei.

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