The thermonuclear fusion rate coefficient for p-11B reactions

Analytic approximations to the p-11B fusion rate coefficient suitable for use at both low (1 keV ⩽ T ⩽ 70 keV) and high (50 keV ⩽ T ⩽ 500 keV) temperatures are developed. Comparisons between these analytic approximations and calculations of the p-11B fusion rate coefficient based on numerical integration indicate that the overall error in these approximations is dominated by errors in the experimental measurement of the underlying p-11B fusion cross-sections.