Results 21 to 30 of about 16,232 (191)

Radionuclide distribution in soils of the Corumbataí River Basin, São Paulo State, Brazil [PDF]

open access: yesGeochimica Brasiliensis, 2017
The use of phosphate fertilizers in sugar cane crops is a very common practice in Brazilian agriculture and, as a consequence, the 226Ra, 292Th and 40K activity concentration in soils may increase and become readily available for plants and transferred ...
Fabiano Tomazini da Conceição   +3 more
doaj  

Absolute frequency measurement of the 7s$^2$ $^1$S$_0$ $-$ 7s7p $^{1}$P$_1$ transition in $^{225}$Ra [PDF]

open access: yes, 2014
Transition frequencies were determined for transitions in Ra in an atomic beam and for reference lines in Te$_2$ molecules in a vapor cell. The absolute frequencies were calibrated against a GPS stabilized Rb-clock by means of an optical frequency comb ...
Dammalapati, U.   +4 more
core   +2 more sources

Distribution of 226Ra Radionuclide in Upwelling Event Off Ulsan, Gampo and Pohang, Korea

open access: yesAtom Indonesia, 2009
Upwelling is an important event in the sea for it makes the area to become more productive. The objective of this study is to determine the distribution of radium-226 as radiotoxic in the upwelling area in the summer season.
Muslim
doaj   +1 more source

Probing r-Process Production of Nuclei Beyond Bi209 with Gamma Rays [PDF]

open access: yes, 1999
We estimate gamma-ray fluxes due to the decay of nuclei beyond Bi209 from a supernova or a supernova remnant assuming that the r-process occurs in supernovae.
Qian, Y. -Z.   +2 more
core   +3 more sources

Radium content in Bulgarian mineral waters [PDF]

open access: yesNuclear Technology and Radiation Protection, 2018
This study presents the results of 226Ra content in 104 Bulgarian mineral waters as well as the investigated correlations between the physicochemical parameters, geological structure, and specific activity of 226Ra.
Kamenova-Totzeva Rositza M.   +2 more
doaj   +1 more source

Assessment of 226Ra levels and the lifetime cancer fatality risk from drinking water in Muang District, Maha Sarakham province

open access: yesScience Technology and Engineering Journal (STEJ), 2022
226Ra is radioactive and decayed from uranium, which is found naturally in soil and rock, and can get into water consumption supplies. Exposure to the radium in high doses, which is much higher than the levels seen in drinking water can be inducing ...
Vitsanusat Atyotha   +4 more
doaj  

Angular bremsstrahlung during $\alpha$-decay, emission from the internal region and unified formula of the bremsstrahlung probability

open access: yes, 2009
Model of angular bremsstrahlung of photons emitted during $\alpha$-decay is presented. A special emphasis is given on development of unified formalism of matrix elements in the dipole and multipolar approaches.
Maydanyuk, Sergei P.
core   +1 more source

Double beta decay of $^{48}$Ca [PDF]

open access: yes, 1996
$^{48}$Ca, the lightest double beta decay candidate, is the only one simple enough to be treated exactly in the nuclear shell model. Thus, the $\beta\beta(2\nu)$ half-life measurement, reported here, provides a unique test of the nuclear physics involved
Balysh, A.   +9 more
core   +2 more sources

Seasonal variation of natural radioactivity in the environs of Kali River

open access: yesRadiation Protection and Environment, 2018
The paper discusses the results of systematic studies of activity concentrations of the 226Ra, 232Th, and 40K in soil and sediment samples of Kali River, one of the major rivers of coastal Karnataka.
K M Rajashekara, V Prakash, Y Narayana
doaj   +1 more source

Octupole vibrations in 226Ra

open access: yesPhysics Letters B, 1982
Abstract The low-lying negative parity band in 226 Ra is described by a phenomenological model for octupole vibrations coupled to a static deformed core. The energies of the whole band are reproduced by adjusting the intrinsic energies of the octupole vibrations.
openaire   +1 more source

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