Results 171 to 180 of about 33,357 (209)
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Lead shielding calculations for transport containers for commonly used radioisotopes
Nuclear Engineering and Design, 1972Abstract Calculations have been made of the lead shield thickness required for the safe transport of 198 Au, 82 Br, 137 Cs, 60 Co, 51 Cr, 64 Cu, 203 Hg, 131 I, 192 Ir, 42 K, 24 Na, 46 Sc, 85 Sr and 65 Zn, reactor—produced radionuclides useful as tracers, etc.
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Journal of Radioanalytical Chemistry, 1976
Multielemental analysis of atmospheric particulates collected on filter paper has been investigated using different radioisotopic exciting sources. Quantitative determinations for zinc and lead during a one year period are reported.
M. Gallorini +3 more
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Multielemental analysis of atmospheric particulates collected on filter paper has been investigated using different radioisotopic exciting sources. Quantitative determinations for zinc and lead during a one year period are reported.
M. Gallorini +3 more
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International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1989
Abstract Measurements and the quantitative analysis of the kinetics of the phenomenon of increasing radioactivity of lead after the scraping of the surface are presented. The growth of radioactivity concerns the α activity of polonium and to a lower degree also the β activity of bismuth. When the surface is scraped, the layer of the material near the
Andrzej Zastawny +2 more
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Abstract Measurements and the quantitative analysis of the kinetics of the phenomenon of increasing radioactivity of lead after the scraping of the surface are presented. The growth of radioactivity concerns the α activity of polonium and to a lower degree also the β activity of bismuth. When the surface is scraped, the layer of the material near the
Andrzej Zastawny +2 more
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Journal of Microelectromechanical Systems, 2014
In this paper, we demonstrate remarkably improved efficiency over various conventional betavoltaics with critical energy loss problems. Radioactive sulfur (35S) was uniformly infused within a semiconductor material (selenium) and volumetrically encapsulated in the harvesting betavoltaic cells.
Tongtawee Wacharasindhu +4 more
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In this paper, we demonstrate remarkably improved efficiency over various conventional betavoltaics with critical energy loss problems. Radioactive sulfur (35S) was uniformly infused within a semiconductor material (selenium) and volumetrically encapsulated in the harvesting betavoltaic cells.
Tongtawee Wacharasindhu +4 more
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The determination of lead in environmental air using a radioisotope X-ray-fluorescence unit
The International Journal of Applied Radiation and Isotopes, 1982The feasibility for the development of a portable radioisotope excited X-ray fluorescence unit, able to detect Pb in air samples, was studied. The unit employs a 0.6-mCi 109Cd source and a Xe-filled proportional detector. The sensitivity of the method was found to be 15 micrograms of lead per cubic metre of air.
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Radiation Protection Dosimetry, 2015
The purpose of this study is to evaluate the effectiveness of personal radiation shields currently worn in hospital and other diagnostic environments. This study was performed with four different radioisotopes; (18)F, (99m)Tc, (124)I and (131)I. (18)F results showed a decrease in dose with 0.5-mm Pb shielding but the reduction provided does not warrant
Pradip, Deb +3 more
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The purpose of this study is to evaluate the effectiveness of personal radiation shields currently worn in hospital and other diagnostic environments. This study was performed with four different radioisotopes; (18)F, (99m)Tc, (124)I and (131)I. (18)F results showed a decrease in dose with 0.5-mm Pb shielding but the reduction provided does not warrant
Pradip, Deb +3 more
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Radiation Physics and Chemistry, 2019
Abstract Proton beam of energy 14.7 MeV have been used to study the reaction cross sections and the excitation functions of the possibly produced gold radioisotopes using stacked foil technique. Five Au radioisotopes namely, 193Au, 194Au, 195Au, 196Au and 198Au have been measured and discussed in the energy range from the proton reactions threshold ...
H. Showaimy +4 more
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Abstract Proton beam of energy 14.7 MeV have been used to study the reaction cross sections and the excitation functions of the possibly produced gold radioisotopes using stacked foil technique. Five Au radioisotopes namely, 193Au, 194Au, 195Au, 196Au and 198Au have been measured and discussed in the energy range from the proton reactions threshold ...
H. Showaimy +4 more
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Analytical Methods, 2015
The performance of ten RMD LPA-1 XRF analyzers was investigated, including accuracy, repeatability and measurement traceability to NIST SRM 2579 lead in paint.
Diana Guimarães +3 more
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The performance of ten RMD LPA-1 XRF analyzers was investigated, including accuracy, repeatability and measurement traceability to NIST SRM 2579 lead in paint.
Diana Guimarães +3 more
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Radiochimica Acta, 2007
Excitation functions for201Pb,202mPb,203Pb and204mPb radionuclides which are formedviaproton induced reactions with natural thallium target have been measured from their respective threshold (Ethr) to 27.5 MeV using activation technique. Natural copper foils were used to monitor the cyclotron beam.
F. S. Al-Saleh, A. A. Al-Harbi, A. Azzam
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Excitation functions for201Pb,202mPb,203Pb and204mPb radionuclides which are formedviaproton induced reactions with natural thallium target have been measured from their respective threshold (Ethr) to 27.5 MeV using activation technique. Natural copper foils were used to monitor the cyclotron beam.
F. S. Al-Saleh, A. A. Al-Harbi, A. Azzam
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Isotopes in Environmental and Health Studies, 2014
In the natural uranium-238 decay series, pure beta isotopes such as (234)Th, (234)Pa, (214)Pb, (214)Bi, (210)Pb and (210)Bi are released. The few lead isotopes such as (211)Pb, (212)Pb, (213)Pb and (215)Pb are good beta emitters. In certain nuclear reactions of reactor these isotopes are released.
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In the natural uranium-238 decay series, pure beta isotopes such as (234)Th, (234)Pa, (214)Pb, (214)Bi, (210)Pb and (210)Bi are released. The few lead isotopes such as (211)Pb, (212)Pb, (213)Pb and (215)Pb are good beta emitters. In certain nuclear reactions of reactor these isotopes are released.
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