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Effect of thermal neutron irradiation at No. 2 channel of Dalat nuclear research reactor on dyed polyvinyl alcohol films

Abstract

The polyvinyl alcohol (PVA) films dyed with methylene blue were decolorised after they were irradiated in a dose range from 0.059 to 1.411 Gy by thermal neutron source at the end of the channel No. 2 of the Dalat nuclear research reactor. The thermal neutron flux at an outer position of beam line at the channel No. 2 was 1.6 × 106 neutron/cm2 s. The dyed PVA films containing boric acid could be used for improvement physical qualities of the films. Response-curves of the dyed PVA films which were irradiated by the thermal-neutron source were described by the saturated exponential function of the energy transfer model.

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Acknowledgements

The authors would like to acknowledge the Institute for Nuclear Science and Technology, the Nuclear Research Institute and Vietnam Atomic Energy Institute for their support via the project No. KC.05.04/16-20 in this study. The authors express our gratitude to colleagues who made many substantial suggestions for improving this paper.

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Correspondence to Anh Thi Vo.

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Vo, A.T., Tran, N.D., Van Trinh, G. et al. Effect of thermal neutron irradiation at No. 2 channel of Dalat nuclear research reactor on dyed polyvinyl alcohol films. J Radioanal Nucl Chem 318, 1243–1247 (2018). https://doi.org/10.1007/s10967-018-6177-6

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  • DOI: https://doi.org/10.1007/s10967-018-6177-6

Keywords

  • Dyed PVA films
  • Response-curves
  • Optical density
  • Methylene blue
  • Dalat nuclear research reactor
  • Thermal- neutron