Gamma radiation shielding and health physics characteristics of diaspore-flyash concretes

J Radiol Prot. 2015 Jun;35(2):401-14. doi: 10.1088/0952-4746/35/2/401. Epub 2015 May 6.

Abstract

Different gamma radiation interaction parameters has been measured experimentally for the prepared diaspore-flyash concretes at 59.54, 662, 1173 and 1332 keV using narrow-beam transmission geometry and results are found to be in good agreement with theoretical values computed with a computer programme, WinXCom. The radiation exposure rate and absorbed dose rate for the gamma radiation with and without shielding of diaspore-flyash concretes have been determined using linear attenuation results. The results show that on average, there is reduction of 95%, 53% and 40% in dose rate for gamma sources (241)Am, (137)Cs and (60)Co, respectively with diaspore-flyash concretes as shielding material. Other health physics parameters namely equivalent dose, effective dose, gamma flux and energy fluence rate have also been determined.

MeSH terms

  • Absorption, Radiation
  • Coal Ash / chemistry*
  • Coal Ash / radiation effects
  • Computer Simulation
  • Computer-Aided Design
  • Construction Materials / analysis*
  • Equipment Design
  • Equipment Failure Analysis
  • Gamma Rays*
  • Materials Testing
  • Models, Chemical*
  • Radiation Protection / instrumentation*
  • Scattering, Radiation

Substances

  • Coal Ash