TY - RPRT TI - Genetic algorithm optimization of tin–copper graded shielding for improved plutonium safeguards measurements AU - Kleedtke, N. AU - Hua, M. AU - Pozzi, S. PY - 2020 DO - 10.1016/j.nima.2020.164877 UR - https://www.osti.gov/biblio/1783282 ID - 1783282 ER -