Production of lutetium-177 using direct nuclear reaction ¹⁷⁶Lu(n,γ)¹⁷⁷Lu by WWR-K reactor neutrons on enriched LuCl₃ (up to 82% of ¹⁷⁶Lu) is described. Calculations were performed by MCNP6 transport code. Two different irradiation positions of the WWR-K research reactor were considered. Estimates of the maximum specific activity of the luthetium-177 are obtained for the reactor irradiation positions located: (a) in the reactor core centre, (b) in the core periphery. In these positions, thermal neutron flux is two times different.

Experimental data was shown that k-factor is 1.5 for considered irradiation positions. The study shows that for the position located in the core center, the estimated maximum specific activity of lutetium-177 is 819 GBq/mg, is to be achieved after 15 days of irradiation. For the position located in the core periphery, specific activity of lutetium-177 is 561 GBq/mg, is to be achieved after 20 days of irradiation. Ratio of Lu-177m to Lu-177 specific activity is not more than 0.025 for both irradiation positions.

描述了使用WWR-K反应堆中子在富集的LuCl ₃（高达¹⁷⁶ Lu的高达82％）上通过直接核反应¹⁷⁶ Lu（n，γ）¹⁷⁷ Lu生产-177的方法。通过MCNP6运输代码进行计算。考虑了WWR-K研究堆的两个不同照射位置。对于位于以下位置的反应堆辐照位置，可以获得the 177的最大比活度的估算值：（a）反应堆堆芯中心，（b）堆芯外围。在这些位置，热中子通量相差两倍。

实验数据表明，对于考虑的照射位置，k因子为1.5。研究表明，对于位于核心中心的位置，辐照15天后，achieved 177的估计最大比活为819 GBq / mg。对于位于核心外围的位置，辐照20天后，achieved 177的比活性为561 GBq / mg。对于两个照射位置，Lu-177m与Lu-177比活性的比率均不大于0.025。