期刊
RADIATION EFFECTS AND DEFECTS IN SOLIDS
卷 171, 期 5-6, 页码 398-407出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10420150.2016.1194418
关键词
Gamma rays; mass attenuation coefficient; molar extinction coefficient; NaI (Tl) detector; chemicals
资金
- UGC, New Delhi
The present work was carried out to find out the gamma ray shielding properties and to study the effects using an NaI (Tl) detector using radioactive sources Co-57, Ba-133, Cs-137, Mn-54, Co-60 and Na-22 at energies 122, 356, 511, 662, 840, 1170, 1275 and 1330 keV, for some chemicals, namely, sodium thiosulfate (Na2S2O3), benzoic acid (C7H6O2), sodium hydroxide (NaOH), poly vinyl alcohol (PVA) (C2H4O), potassium nitrate (KNO3), naphthalene (C10H8). Mass attenuation coefficient (mu(m)) values obtained from the experiment were used to determine the effective atomic numbers (Z(eff)) and effective electron densities (N-eff), atomic cross-sections (sigma(t)) and electronic cross-sections (sigma(e)); it will be observed from the present work that the variation in the obtained values is only due to the increase or decrease in the gamma ray energy and the chemical composition of the sample. It was seen that the calculated and obtained values showed good agreement. The investigated data are useful in the electronic industry, plastic industry, building materials and agriculture fields. From the present work it was found that the PVA could be used as a better gamma shielding material.
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