Results 211 to 220 of about 6,408 (256)
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Charging for Radioactive Emissions
Science, 1975Radioactive emissions from nuclear power plants can be controlled by using a pollution charge. This is a more effective and simpler procedure than the present method of shutting down plants and leads to a more desirable balance between alternative sources of energy.
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Emission of Positrons from Radioactive Sources
Nature, 1935WITH the improved apparatus, already used by us in the investigation of positrons from thorium-active deposit, we have repeated our measurements of the positron spectrum, emitted by a thin-walled radon tube; a new determination of the ratio of the positron number to that of the particles of RaC was also made. The positron spectrum is shown in Fig.
A. I. ALICHANOW +2 more
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Light emission of radioactively doped crystals
2022Th-229 has the lowest known first nuclear exited state, which makes it an ideal candidate for a prospective nuclear optical clock. Until now energy and lifetime of this isomer state are known with insufficient accuracy. For a direct (photonic) measurement of this state background effects are not neglectable.
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Fusion neutron induced radioactive emissions from surfaces☆
Journal of Nuclear Materials, 1976Abstract Neutron induced direct nuclear recoil sputtering ratios have been measured for a variety of 14.8 MeV (d, t) neutron induced reactions in Nb, Mo, V and 316 SS. Absolute recoil sputtering ratios for forward and backward sputtering are reported.
M.T. Thomas +3 more
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Radioactivity: Detection of Gamma-Ray Emission in Sediments in situ
Science, 1965A probe for measuring emission of γ-rays in sedimentsin situin water depths to about 35 meters was used to measure radioactivity in the Columbia River estuary and Oregon coastal areas. This technique offers some advantage over methods in which sediment samples are collected at sea and returned to the laboratory for radioanalysis.
D, Jennings, N, Cutshall, C, Osterberg
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Radioactive implant induced X-ray emission
Nuclear Instruments and Methods in Physics Research, 1982Abstract Two approaches with X-ray excitation sources directly inside a sample have been examined: mixing a sample in solution with a radioisotope or bombardment of a solid specimen with a radioactive ion beam. The radioisotopes used weere 3 H, 35 S, 125 I, with detection limits of, for example, 20 μg/g for Ag excited by a 125 I implant of ∼75 ...
J.R. Joyce, A.O. Sanni, E.A. Schweikert
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Spontaneous pion emission as a new natural radioactivity
Annals of Physics, 1986Abstract In this paper the pionic nuclear radioactivity or spontaneous poin emission by a nucleus from its ground state is investigated. The Qπ-values as well as the statistical factors are calculated using the experimental masses tabulated by Wapstra and Audi.
D.B Ion, M Ivascu, R Ion-Mihai
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THE EMISSION OF RADIOACTIVE NUCLEI IN COSMIC RAY STARS
Canadian Journal of Physics, 1951It has been found that a certain proportion of the fragments emitted in cosmic ray stars formed at about 85,000 ft. consists of radioactive nuclei, i.e., in electron sensitive photographic emulsions, tracks of electrons with energies of several mega electron volts can be seen originating at the end of the track of the fragment.
E. Pickup, L. Voyvodic
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Fukushima’s Forgotten Radionuclides: A Review of the Understudied Radioactive Emissions
Environmental Science & Technology, 2014In environmental monitoring campaigns for anthropogenic radionuclides released in the course of the Fukushima nuclear accident (2011), most focus had been on gamma-emitting radionuclides. More than 99% of the released activity was due to radionuclides of the elements Kr, Te, I, Xe, and Cs.
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