On the mechanisms of bismuth transmutation in a BiPb melt under the influence of nanosecond electromagnetic pulses

Abstract

The effect of nanosecond electromagnetic pulses on the bismuth-lead melt allowed us to establish an increase in the proportion of lead due to the transformation of Bi → Pb. An electronic capture was assumed as a probable transition mechanism. The presence of isotopes Bi210m, Bi208, Bi207 in the initial samples was assumed too. However, the capture of an electron is characteristic only for Bi208, Bi207. Natural bismuth is represented by the isotope Bi209. Therefore, it is necessary to consider the transformations of this isotope. It is assumed that the leading role in the transformation is played by the vapor phase. It is shown that in the presence of water vapor, an increase in the melt mass Δm > 0 is possible both due to the interaction of Bi209 nuclei with “quasineutrons” (including “neutroids” of Santilli and “hydrino” of Mills) as well as with “pseudoprotons” and “protoids” (the last two terms refer to the bound states of a proton with two electrons). The sizes of the bound states are substantially smaller than the Bohr radius RB . The increment of the lead fraction occurs due to the isotope Pb210. On the contrary, the intensification of α-decays under conditions of electromagnetic pulsed exposure should be accompanied by an increase in the fraction of lead due to the Pb206 isotope and a decrease in the mass of the melt. Under the conditions of isolation of the melt from water vapor, the melt mass loss Δm < 0 can be expected due to α-radiation from the Bi209 nuclei with subsequent volatilization of helium and accumulation of the isotope Tl205. The decay of nuclei occurs due to the intensification of the tunnel effect. In this case, one should not expect an increase in the share of lead due to the Pb207 isotope. It is important that the assessment of Δm ~ 0.1 g for real experiments indicates the possibility of its reliable measurement. In conclusion, the research perspectives are briefly discussed. © 2019, Institute for Metals Superplasticity Problems of Russian Academy of Sciences. All rights reserved.