2008/04/16 by Giorgio Giardina, Giovanni Fazio, G. Fazio +16 · 1 citation
Physics and Astronomy · #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #Radioactive Decay and Measurement Techniques #nucl-ex
paper · pdf · doi:10.1142/s0217732308027369
published as Mod.Phys.Lett.A23:2651-2663,2008
arxiv created 2008/04/16 · openalex publication_date 2008/10/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We obtained the spectrum of probability of the bremsstrahlung emission accompanying the α-decay of 226 Ra (E α = 4.8 MeV ) by measuring the α-γ coincidences and using the model presented in our previous study on the α-decay of 214 Po (E α = 7.7 MeV ). We compare the experimental data with the quantum mechanical calculation and find a good agreement between theory and experiment. We discuss the differences between the photon spectra connected with the α-decay of the 226 Ra and 214 Po nuclei. For the two mentioned nuclei, we analyze the bremsstrahlung emission contributions from the tunneling and external regions of the nucleus barrier into the total spectrum, and we find the destructive interference between these contributions. We also find that the emission of photons during tunneling of the α-particle gives an important contribution to the bremsstrahlung spectrum in the whole E γ energy range of the studied 226 Ra nucleus.