@techreport{TechReport_2024_LANL_LA-UR-24-24602Rev.1_KuleszaAdamsEtAl, address = {Los Alamos, NM, USA}, author = {Kulesza, Joel A. and Adams, Terry R. and Armstrong, Jerawan C. and Bolding, Simon R. and Brown, Forrest B. and Bull, Jeffrey S. and Burke, Timothy P. and Clark, Alexander R. and Forster, III, Robert Arthur and Giron, Jesse F. and Grieve, Avery S. and Josey, Colin J. and Martz, Roger L. and McKinney, Gregg W. and Pearson, Eric J. and Rising, Michael E. and Solomon, Jr., Clell J. and Swaminarayan, Sriram and Trahan, Travis J. and Weaver, Colin A. and Wilson, Stephen C. and Zukaitis, Anthony J.}, doi = {10.2172/2372634}, editor = {Joel A. Kulesza}, institution = {Los Alamos National Laboratory}, month = {May}, number = {LA-UR-24-24602, Rev.~1}, title = {{MCNP\textsuperscript{\textregistered} Code Version 6.3.1 Theory \& User Manual}}, url = {https://www.osti.gov/biblio/2372634}, year = {2024} }