TY - JOUR A1 - Fehsenfeld, F. C.A1 - Lindinger, W.A1 - Schmeltekopf, A. L.A1 - Albritton, D. L.A1 - Ferguson, E. E.T1 - Energy dependence of the reaction NH_3^ H_2 - NH_4^ HJF - J. Chem. Phys.Y1 - 1975VL - 62SP - 2001EP - 2003ER -