The thermal conductivity of CH4–Kr solid solutions is investigated at CH4 concentrations 0.2–5.0% in the temperature range 1.8–40 K. It is found that the temperature dependence of the thermal conductivity has features typical of resonance phonon scattering. The analysis of the experimental results shows that the main contribution to the impurity-caused scattering of phonons is made by the scattering on rotational excitations of the nuclear spin T-species of CH4 molecules. The phonon–rotation interaction parameter is estimated.
The article discusses a new methodology for assessing the negative impact of nuclear energy on agricultural land. The necessity of assessing from a financial point of view the negative impact of nuclear energy on agricultural land and the environment is substantiated. Methods are proposed for assessing the financial damage of the negative impact of nuclear energy based on an analysis of the state of the soil and the living world. Examples of calculations of damage in monetary terms for the Russian Federation from the negative impact on the basis of studies of the state of the environment on agricultural land are presented.
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