Relationship between Crystal Structures and Thermoluminescence Spectra of Gamma-Irradiated Shells of Shellfish Measured with a Multichannel Fourier-Transform Luminescence Spectrometer

DOI PDF Web Site 23 References
  • Shonaka Moe
    Graduate School of BASE (Bio-Applications and Systems Engineering), Tokyo University of Agriculture and Technology
  • Ishii Hiroshi
    Ueshima Seisakusho Co., Ltd.
  • Hironiwa Takayuki
    Koga Isotope Ltd.
  • Akai Nobuyuki
    Graduate School of BASE (Bio-Applications and Systems Engineering), Tokyo University of Agriculture and Technology
  • Nakata Munetaka
    Graduate School of BASE (Bio-Applications and Systems Engineering), Tokyo University of Agriculture and Technology

Search this article

Abstract

<p>Thermoluminescence spectra of gamma-irradiated shells of oysters, scallops, mussels, littleneck clams, and freshwater clams are measured with a multichannel Fourier-transform luminescence spectrometer. Oysters, scallops, and mussels isothermally heated at 200 °C show strong luminescence due to the electronic transition of Mn2+, which is included as an impurity in shells and excited to a metastable state by gamma-ray irradiation. Littleneck clams and freshwater clams show very weak thermoluminescence under the same experimental conditions and show strong thermoluminescence owing to phase transition when they are heated at 450 °C before gamma-ray irradiation. The phase transition of the crystal structures from aragonite to calcite is monitored by infrared spectroscopy.</p>

Journal

References(23)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top