Special features of the radiative capture of ultracold neutrons by thin and thick layers of matter |
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Authors: | T. Ya. Tudorovskiy A. L. Barabanov |
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Affiliation: | (1) Russian Research Centre Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182, Russia |
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Abstract: | The radiative capture of ultracold neutrons traversing thin and thick homogeneous layers of matter is analyzed. The applicability range of the formulas for the probabilities of reflection, transmission, and capture in thick layers (under certain conditions, they admit a simple interpretation—it is often quoted in the literature—that is based on the effective capture cross section, which is in inverse proportion to the velocity of a neutron in matter) is investigated, along with the conditions under which there arises the effective capture cross section. |
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