Refinement of thermonuclear reaction rates

• DOI: 10.1016/j.fusengdes.2019.02.082
• Publication Date: 2019-03-02T11:48:19Z
• Authors: A.A. Belov; N.N. Kalitkin; I.A. Kozlitin
• Keywords: 20.00; Cross sections; 42.10; Thermonuclear reactions; reaction rates; 0103 physical sciences; 00.00; experiments processing; 530; 01 natural sciences; 7. Clean energy

Abstract We propose a new mathematical technique for processing of experimental data measured with large errors. The method is applied to all available experiments on 4 major thermonuclear reactions taken into account in simulations of deuterium and deuterium–tritium fusion targets. We present new approximations for the dependence of the cross sections on energy and for the dependence of the reaction rates on temperature. Along with these approximations, we propose a procedure allowing to estimate their confidence belts. Such estimations were not known before. New approximations provide error ∼0.3% for the cross sections and ∼4% for the reaction rates. The present data are up to ∼5 times more accurate than reported in literature.