نتایج جستجو برای: 238u
تعداد نتایج: 745 فیلتر نتایج به سال:
The gamma-ray decay of excited states of the two-proton hole nucleus, 206Hg, has been identified using Gammasphere and 208Pb+238U collisions. The yrast states found include a T(1/2) = 92(8) ns 10(+) isomer located above the known 5(-) isomer. The B(E2;10(+)-->8(+)) strength is used to derive the quadrupole polarization charge induced by the h(11/2) proton hole. Also, the implied quadrupole mome...
Spallation residues and fission fragments from 1A GeV 238U projectiles irradiating a liquid hydrogen target were investigated by using the fragment separator at GSI for magnetic selection of reaction products including ray-tracing, energy-loss and time-of-flight techniques. The longitudinal-momentum spectra of identified fragments were analyzed, and evaporation residues and fission fragments co...
This review describes applications of inductively coupled plasma mass spectrometry (ICP-MS) to the determination of long-lived radionuclides in environmental samples. Simultaneous determination of 232Th and 238U in biological samples is described in detail; in this procedure an internal standard, Tl or Bi, is adopted for correction of the matrix effect. Determination of 237Np in soil samples by...
All existing “positive” results on two neutrino double beta decay in different nuclei were analyzed. Using the procedure recommended by the Particle Data Group, weighted average values for half-lives of 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 100Mo 100Ru (01 ), 116Cd, 130Te, 150Nd, 150Nd 150Sm (01 ) and 238U were obtained. Existing geochemical data were analyzed and recommended values for half-lives of ...
The uranium concentration in 59 samples of bottled and tap water, mainly from northern Italy, was measured by different techniques. Results obtained by inductively coupled plasma mass spectrometry (ICP-MS), semiconductor alpha spectrometry and low level liquid scintillation counting with alpha/beta discrimination (LSC) have been compared. High resolution gamma spectrometry and semiconductor alp...
groundwaters hydrochemistry of ayrakan and cheshmeh shotori areas and geochemistry of rare earth elements, indicate ayrakan alkali granite as the origin of uranium and other dissolved elements in groundwaters of these areas. geochemical and hydrogeochemical studies as well as the trend of uranium and thorium transition and mobility in aqueous environments of these areas indicate uranium adsorpt...
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 eleaocarpus oblan...
This paper includes the measurement of concentrations natural radioactive isotopes 238U, 232Th, and radiation dose rates for selected areas Wasit province.GR-460 system has been used radiological survey operations, it is a portable system, installed inside minibus there Sodium Iodide Detector (NaI), that ability to measure in (ppm) unit µR/h unit. The results showed absence any significant incr...
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