As discussed in Chapter 1, the radioactivity of heavy atoms, embodied in the three processes of α-, β- and γ-decay, were early indicators of nuclear activity. With the production of many species of nuclei in their ground or excited states through nuclear reactions such decays have been ...
Level matrix, N-16 beta decay, and the C-12 (alpha, gamma) O-16 reaction The shape of the low-energy part of the [beta]-delayed [alpha]-particle spectrum of [sup 16]N is very sensitive to the [alpha]+[sup 12]C reduced width of t... J Humblet,BW Filippone,SE Koonin 被引量...
We present a new, simplified analysis of the low-energy electron-positron interaction, and use the resulting effective theory to calculate the binding effects that contribute to the decay rate, Gamma, of orthopositronium, through Order(alpha^2 Gamma). We express the total decay rate in terms ...
RADIOACTIVE DECAY: understand radioactive decay. describe alpha, beta and gamma radiation? Atomic Theory and Radioactive Decay Natural background radiation exists all around us. This radiation consists of high energy particles or waves being emitted from a variety of materials. Radioac...
The αγ linear polarization correlation coefficients of the 271 keV and 401 keV γ-transitions in the decay of 219Rn have been determined to be B 2 = 0.029±0.011, B 4 = 0.0147±0.0042; B 2 = -0.093 ± 0.0084, B 4 = 0.0130±0.0034, respectively. The 130 keV γ-271 keV γ ...
Moreover, there are only a few accelerators that can produce deuteron beams with enough energy. The photonuclear reaction 226Ra(γ,n)225Ra The photonuclear reaction 226Ra(γ,n)225Ra, followed by the beta decay of 225Ra to 225Ac is a different method for producing 225Ac by irradiating ...
The order ${\\\mathcal O} (\\\alpha \\\alpha_s m_t^2 /M_W^2)$ corrections to the partial decay rate of $\\\Gamma (Zo b\\\bar b)$ are computed using the heavy top mass expansion. They are given by the absorptive part of the corresponding three-loop Z self-energy diagrams....
Main mode (Alpha decay, beta decay, and the gamma transition), the law of radioactive decay, simple calculations; 翻译结果3复制译文编辑译文朗读译文返回顶部 Main mode (Alpha decay, beta decay, and the gamma transition), the law of radioactive decay, simple calculations; ...
nuclei with mass number 190 to 219/ alpha decayisomer 213mRa209Bi( 10B,6n)gamma internal transitionslevel schemeshell model configurations12C+PbThe isomer 213m Ra was produced by the reaction 209 Bi( 10 B, 6 n ), as well as by bombardments of 12 C on Pb isotopes, 14 N on Bi, and...
Alpha decay and spontaneous fission of the ground-state and the isomeric state of Md-247 were investigated with specific emphasis to identify the ground-state of the daughter nucleus Es-243. The decay studies were accompanied by measuring alpha-gamma coincidences. On the basis of the measured ...