化学反应位能面最初是用LFP法(London-Eyrig-Polanyi)来建立的,我国孙承谔教授就曾参与了最初一批位能面的建立。五十年代Sato作了改进,就是LEPS法。直到现在,LEPS法仍以其简便可行超过现代量子化学方法而得到广泛使用。London提出,反应体系A+BC→AB+C的位能可用下式确定: The chemical reaction potential energy surface was first established by the LFP method (London-Eyrig-Polanyi), and Professor Sun Chengtao was involved in the first batch of energy surface creation. The fifties Sato made improvements, is the LEPS method. Until now, the LEPS method is still widely used because of its simplicity and viability over modern quantum chemistry methods. London proposed that the potential of the reaction system A + BC → AB + C can be determined by the following formula: