Abstract
A separable representation with respect to the initial and final momentum variables is made for the NN one-boson-exchange potential (OBEP) due to Ueda, Riewe and Green in the method of Ernst, Shakin and Thaler. The representation is made for potentials with total angular momentum f :::;;3 in the 0-300 MeV energy range of the incident laboratory proton. In rank two or three form, the OBEP is satisfactorily represented. The representation is very useful for problems of three-body systems involving two nucleons. An application is made to the r=o- ;rNN system in the three-body calculation. The effect of the separable t So potential is investigated in the 3 Po NN ... NN amplitude in this system. A remarkable threshold effect is found in the absorption parameter of the amplitude.
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