VNU Journal of Science Mathematics – Physics, Vol 37, No 2 (2021) 59 68 59 Original Article Neutron Cross Section Generation for PWR MOX Fuel Assemblies with SCALE and Serpent Vu Thanh Mai1, Donny Hartanto2, Tran The Anh1, Luu Thi Lan3, Tran Viet Phu4, Pham Nhu Viet Ha4,* 1VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam 2University of Sharjah, P O BOX, 27272, Sharjah, United Arab Emirates 3Vietnam National Cancer Hospital, 30 Cau Buou, Thanh Tri, Hanoi, Vietnam 4Institut[.]