Zobrazeno 1 - 10
of 1 080
pro vyhledávání: '"Isotopes of thorium"'
Autor:
A. Vasilyev, Michael Zhukovsky, Aleksandra Onishchenko, Ilia V. Yarmoshenko, Maria Pyshkina, A. A. Ekidin, Georgy Malinovsky
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 328:727-737
To control the specific activity of 226Ra in building materials of operated buildings, a non-destructive in situ method consisted in measurements of gamma spectra with a fixed geometry of the detector position in a room is suggested. The calculation
Autor:
Theresa M. Kayzar-Boggs, N. E. Marks, Rachel King-Lopez, William S. Kinman, Debra A. Bostick, Brian W. Ticknor, Rachel E. Lindvall, Annelise M. R. Cardon, Cole R. Hexel, Rebecca R. Foley, M A Sharp
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 327:877-889
This interlaboratory study measured thorium concentrations and isotope compositions in uranium ore concentrates from different geographical locations to examine whether thorium impurities may be useful forensic signatures for uranium ore concentrates
Autor:
M. Jamiati
Publikováno v:
Physics of Atomic Nuclei. 83:859-865
The fission fragment total kinetic energy TKE(A) was calculated for neutron-induced fission of 229,232Th using the scission point model. The calculated results were compared with the available experimental data to obtain the parameters of the scissio
Autor:
Alessandro Gattuso, Davide Romano, Francesco Caridi, Giuseppe Sabatino, Rossella Grillo, Maria Teresa Caccamo, Alessandro Tripodo, Giacomo Messina, Francesco Italiano, M. Di Bella, C Triolo, Salvatore Magazù, Giuliana Faggio
Publikováno v:
Radiation Protection Dosimetry. 191:452-464
Crystalline rocks can produce dangerous radiation levels on the basis of their content in radioisotopes. Here, we report radiological data from 10 metamorphic and igneous rock samples collected from the crystalline basement of the Peloritani Mountain
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 324:1435-1454
Proton-induced fission of 232Th was studied in a wide proton energy range 20–140 MeV. A large amount of experimental cross sections for individual and cumulative formation of 232Th fission products were determined by means of stacked-foil irradiati
Autor:
M. Z. Abzalov
Publikováno v:
Geochemistry: Exploration, Environment, Analysis. 21
Mobile radiogenic lead isotopes (206Pb, 207Pb, 208Pb and 210Pb) represent products of radioactive decay of their parental uranium and thorium isotopes (238U, 235U, 232Th), and are considered potential geochemical pathfinders of buried sandstone-type
Autor:
A. Akinpelu, M. A. Saeed, Zaidi Embong, Gideon Adewale Adeyemi, O. C. Olawole, M. Omeje, Emmanuel S. Joel
Publikováno v:
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
The risk of natural terrestrial radioactivity on human health is often underestimated, and environmental safety awareness is necessary. Hence, this study aims to assess natural sources of gamma radiation emitter in coastal urban-environment using the
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 322:1871-1875
A sequential analysis procedure for urine samples was developed and validated focusing on 210Po, natural uranium, and thorium radioisotopes. The amount of sample for analysis and counting time were estimated to meet the criteria of minimum detectable
Publikováno v:
Nuclear Physics A. 988:1-8
The energies of the positive parity ground state band with L π = 0 + , 2 + , 4 + , … and the negative parity octupole band with L π = 1 − , 3 − , 5 − , … in normally deformed Thorium (Th) even-even nuclei are described in the framework of
Publikováno v:
Radiation Protection Dosimetry. 186:520-523
The activity concentrations of 226Ra, 232Th and 40K radionuclides from common building materials used by Malaysian people for construction purposes were studied using High-Purity Germanium (HPGe) detector. The measured activity concentrations of the