JOURNAL ARTICLE

Experimental and computational study of the beta shielding properties of polycarbonate filled with lead nitrate.

  • Published In: Radiation Protection Dosimetry, 2023, v. 199, n. 11. P. 1248 1 of 3

  • Database: Applied Science & Technology Source Ultimate 2 of 3

  • Authored By: Koramar, Manjappa Chandrappa; Lobo, Blaise 3 of 3

Abstract

This article focuses on the investigation of radiation shielding properties of lead nitrate (Pb(NO₃)₂)-filled polycarbonate (PC) composite films against beta radiation from ^204Tl and ^90Sr-^90Y radioactive sources. The study measured and computationally calculated the mass attenuation coefficient (MAC) of these composites at various filler levels (0–50 weight percent), finding that Baltakmen's empirical formula better predicts MAC values compared to Thummel's formula. Results showed that increasing Pb(NO₃)₂ content enhances the composite's density, modified atomic number, and effective atomic weight, leading to improved beta particle attenuation, as evidenced by significant reductions in half value layer (HVL) values. Additionally, the PC matrix acts as an electron moderator by reducing the energy of higher-energy beta particles from ^90Y, confirming the composite's effectiveness as a transparent beta radiation shielding material.

Additional Information

  • Source:Radiation Protection Dosimetry. 2023/07, Vol. 199, Issue 11, p1248
  • Document Type:Article
  • Subject Area:Physics
  • Publication Date:2023
  • ISSN:01448420
  • DOI:10.1093/rpd/ncad171
  • Accession Number:164762312
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