Category Archives: Nuclear and Radiochemistry

Nuclear Reactions with Neutrons

As discussed in Section 5.5.3, neutrons are classified according to their kinetic energy as cold, thermal, slow, epithermal, and fast neutrons. Since neutrons are neutral, there is no Coulomb repulsion between them and nuclei. As a result, even thermal neutrons can initiate nuclear reactions. When the neutron collides with the nucleus, an excited nucleus forms, which can emit a neutron […]

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Isotopic Effects

Isotope atoms may have some different physical, chemical, geological, and biological properties. In addition, the isotopes are usually present not as free atoms, but in com­pounds, participating in chemical bonds. This means that there are isotope compounds or isotope molecules in which one atom (or perhaps more atoms) is substituted by another isotope. For example, the very simple hydrogen molecule […]

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Interaction of Beta Radiation with Matter

The transformation of the nuclei and the electron orbitals may result in electron emission. As discussed in Section 4.4.2, the negative or positive particles (namely, electrons or positrons following the transformation of the nuclei) are called nega­tive or positive beta radiation, respectively, and they have continuous spectra. The transformation of the atomic orbital can also produce electrons, as discussed in […]

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