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  • 1 Japan Chemical Analysis Center 295-3 Sanno-cho Chiba (Japan)
  • | 2 Radioisotope and Nuclear Engineering School, JAERI 2-28-49 Honkomagome, Bunkyo-ku Tokyo (Japan)
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A simple method to determine -ray attenuation coefficients using Ba-133 -rays has been developed and applied to self-absorption correction in routine -ray spectrometry for environmental samples composed of unknown matrix elements. Experimental values of the mass attenuation coefficient obtained by the method agree well with calculated values for samples of known elemental composition which was determined by means of chemical analysis.