نتایج جستجو برای: 238u
تعداد نتایج: 745 فیلتر نتایج به سال:
Compact, low energy accelerator mass spectrometry (AMS) has evolved over the past years as one of most sensitive, selective, and robust techniques for analysis heavy long lived radionuclides. In this study, we focus on analytical capabilities compact AMS system MILEA, mainly 236U analyses. First, setup actinide analyses is presented special technical 23xU/238U (x = 3, 6, 5) discussed. Then, bac...
Introduction: This study was conducted to measure the gamma emitters (e.g., uranium-238 [238U], thorium-232 [232Th], and potassium-40[40K]) and alpha emitters (e.g., radon-222 [222Rn] and radium), and also to evaluate the radiation hazard indices of radionuclides in parenteral nutrition samples utilized in the hospitals of Iraq. Material and Methods: The measurements were accomplished using ga...
Background: Investigation on the natural radionuclides 238U, 232Th, 40K and natural fallout radionuclide 210Po in the prominent plants species of Western Ghats tropical forest near Kotagiri have been carried out as a part of baseline background radiation studies in the forest environment. Materials and Methods: The prominent plants species of the region Evodia roxburghiana and Eleaoca...
We perform energy-dependent calculations of independent and cumulative fission product yields for 235U, 238U, 239Pu in the first chance region. Starting with primary fragment distributions taken from available experimental data analytical functions based on assumptions excitation energy spin-parity distributions, Hauser-Feshbach statistical decay treatment de-excitation is applied to more than ...
Amchitka Island (51degrees N lat, 179 degrees E long) was the site of three underground nuclear tests from 1965-1971. There have been no substantive studies of radionuclides in marine fishes and birds in the area since the mid-1970's. In this study, levels of 60Co, 52Eu, 90Sr, 99Tc, 129I, 137Cs, and the actinides (241Am, 238Pu, 239,240Pu, 234U, 235U, 236U, and 238U) were studied in ten marine f...
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