Isotope Shifts in Thorium—Th 230 and Th 232*
نویسندگان
چکیده
منابع مشابه
Variation of initial 230 Th / 232 Th and limits of high precision U - Th dating of shallow - water corals
Department of Geosciences, National Taiwan University, Taipei, Taiwan, ROC Tectonics Observatory, California Institute of Technology, Pasadena, California, USA Department of Geology and Geophysics, University of Minnesota, Minnesota, USA Institute of Geology, Vietnamese Academy of Science and Technology, Hanoi, Vietnam National Museum of Marine Biology and Aquarium, Pingtung, Taiwan, ROC Instit...
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We describe the breaking of supersymmetry in M-theory by coordinate dependent (ScherkSchwarz) compactification of the eleventh dimension. Supersymmetry is spontaneously broken in the gravitational and moduli sector and communicated to the observable sector, living at the end-point of the semicircle, by radiative gravitational interactions. This mechanism shares the generic features of non-pertu...
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We present the isotope shifts of the 7s1/2 to 7p1/2 transition for francium isotopes 206−213Fr with reference to 221Fr collected from two experimental periods. The shifts are measured on a sample of atoms prepared within a magneto-optical trap by a fast sweep of radio-frequency sidebands applied to a carrier laser. King plot analysis, which includes literature values for 7s1/2 to 7p3/2 isotope ...
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Background: Naturally occurring radioactivity is a root cause of human exposure to harmful radiation. The occupational exposure hazard due to natural radionuclides occurring in drilling wastes is especially important in this regard. In this study the concentration of radionuclides namely 232Th, 226Ra and 40K were assessed in soil samples that were taken from various oil drilling areas. Methodol...
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Activities of Pa and Th in surface sediments from the Arctic Ocean and Greenland–Norwegian Seas are used to examine the redistribution of these water-column produced tracers between the low productivity interior basins and high particle flux marginal areas. Sediment 231Paxs/ 230Thxs ratios throughout the Canadian and Eurasian Basins and the high particle flux Chukchi slope region are essentiall...
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ژورنال
عنوان ژورنال: Journal of the Optical Society of America
سال: 1953
ISSN: 0030-3941
DOI: 10.1364/josa.43.000036