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The classical trajectory method is employed to calculate the rate coefficient kr for the reaction H++He+He-HHe++He at the temperatures ranging 200-350 K, based on an ab initio potential energy surface. The results show that kr is strongly dependent on the temperature, which can be well fitted by the function kr=ATDr-3 with A=4.192x10-31 cm6/s and the reaction dimension Dr=2.706. The product molecules HHe+ are found in high vibrational states.
The classical trajectory method is employed to calculate the rate coefficient kr for the reaction H ++ He + He-HHe ++ He at the temperatures ranging 200-350 K, based on an ab initio potential energy surface. The results show that kr is strongly dependent on the temperature, which can be well fitted by the function kr = ATDr-3 with A = 4.192x10-31 cm6 / s and the reaction dimension Dr = 2.706. The product molecules HHe + are found in high vibrational states.