2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185236The sources of the systematical uncertainties due to radiative correction procedure in measurements of the structure function $g_1^n$ with $^3$He target are considered. Their numerical estimations are presented. The relative systematical uncertainty does not exceed 5%.6 pages, 2 figuresHigh Energy Physics - Phenomenologytext