@techreport{TechReport_2025_LANL_LA-UR-25-23077_Lively, address = {Los Alamos, NM, USA}, author = {Lively, Michael Aaron}, doi = {10.2172/2545779}, institution = {Los Alamos National Laboratory}, number = {LA-UR-25-23077}, title = {{An Update to \delta-ray Production in MCNP6}}, url = {https://www.osti.gov/biblio/2545779}, year = {2025} }