Nuclear Energy The first nuclear reactor was assembled at the university of Chicago in 1942 by Enrico Fermi and co-worker. They successfully demonstrated a chain reaction, even though it was at a very low power level about 200 watts Abundance Manhattan Project 235 Los Alamos. New mexico 20143 0.70 Oak ridge, Tennessee, etc 238 920146 99.39 3 Nuclear bomb Critical Mass 15kg 23SU Ist, test in New Mexico, July, 1945 5kg 239Pu Hiroshima nagasaki, august, 1945 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan UniversityNuclear Energy The first nuclear reactor was assembled at the University of Chicago in 1942 by Enrico Fermi and co-worker. They successfully demonstrated a chain reaction, even though it was at a very low power level about 200 watts. Manhattan Project Los Alamos, New Mexico; Oak Ridge, Tennessee, etc. Critical Mass 15kg 235U, 5kg 239Pu 235 92U143 238 92U146 0.7% 99.3% 3 Nuclear bomb 1st, test in New Mexico, July, 1945. Hiroshima Nagasaki, August, 1945 Abundance