Internal energy effects on the reaction of D3+ with CH4

A tandem mass spectrometer has been used to measure the distribution of ionic products resulting from the reaction of D3+ with CH4 as a function of the average number of D3+-D2 collisions occurring in the source. These results provide information on the amount of internal excitation energy in D3+. It is shown that at least 69% of the D3+ ions are formed with 0.6 eV or more excitation energy. These results are compared with an approximate D3+ excitation energy distribution based upon a statistical model which assumes a random distribution of energy among the vibrational and translational states of the products of the reaction of D2+ with D2. Reasonable agreement was obtained.

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