The surface $^{210}$Pb is one of the main background sources for dark-matter-search experiments using NaI(Tl) crystals, and its spectral features associated with beta-decay events energies less than 60 keV depends on depth distribution in an crystal. Therefore, we must understand profile to precisely model measurement low-energy region low-background experiment crystals. We estimate contaminati...

The aim of this study is to analyse the role natural radionuclides 226Ra, 228Ra, 40K and unsupported 210Pb (210Pbex), as erosion accumulation process tracers. For purpose, a complex system, including both characteristic dynamics closed beach those associated with open wave action, was studied. A 3-year monthly variation 210Pbex carried out at Las Canteras beach, on Island Gran Canaria (Spain), ...

For a better understanding of the previously observed increased natural radioactivity at confluence Varzob and Sioma rivers, Central Tajikistan, activity concentration radioactive 40K, Th U daughters as well anthropogenic 137Cs were determined in nine locations covering entire River. The radiometric determinations evidenced, addition to concentrations daughter radionuclides, an anomalous accumu...

An extension of the Semimicroscopic Algebraic Cluster Model (SACM) is proposed, based on pseudo-SU(3) model. The Hamiltonian and spectroscopic factor operator model are presented a procedure constructing space. Because huge number SU(3) irreducible representations (irrep) appear, one has to be careful in designing practical, consistent path reduce Hilbert concept forbiddenness, taking into acco...

Abstract In this study, the aerosol removal coefficients based on 7 Be, 210 Pb and Po radionuclides in urban air, Lodz, Poland, were investigated over 3 years, between May 2014 December 2017. Results representing summer/warm winter/cold seasons applied to quantity quality estimates of processes. The values for processes closely dependent meteorological conditions; therefore, a set nine paramete...