کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1879610 | 1532130 | 2008 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Observation of β-ray spectra after penetrating absorbing materials Observation of β-ray spectra after penetrating absorbing materials](/preview/png/1879610.png)
β-Ray spectra after penetrating absorbing materials of various thicknesses were observed by the use of a scintillation-type β-ray spectrometer equipped with a flat NE-102 plastic scintillator of 5 mm thickness for sources of 60Co, 90Sr–90Y, 137Cs, 147Pm and 204Tl. Although the spectra changed rapidly with increasing absorber thickness, the average β-ray energy was kept nearly constant for a wider range. These results are consistent in that the β-ray absorption curve becomes quasi-linear in a semi-logarithmic plot. Spectra including scattered β-rays from several materials placed behind the source were also measured for 137Cs and 204Tl. It may be concluded that mean energy measurements by the use of β-ray spectrometer of this kind is useful for the identification of nuclides in radiation protection purposes even in worse source-conditions.
Journal: Applied Radiation and Isotopes - Volume 66, Issues 6–7, June–July 2008, Pages 819–822