@techreport{TechReport_2026_LANL_LA-UR-26-27617_Favorite, address = {Los Alamos, NM, USA}, author = {Favorite, Jeffrey A.}, institution = {Los Alamos National Laboratory}, month = {August}, number = {LA-UR-26-27617}, title = {{Source Material Density First-Order Sensitivities in MCNP6}}, type = {Presentation}, year = {2026} }