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Dissociative attachment (Sharp and Dowell 1967) presents two overlapping peaks in the region of the total cross-section maximum: the lower one at 9 eV is due to the production of H− ions,and the higher one at 10.2 eV is due to CH2− ions. The contribution to total cross section is as low as 4 •10−5 m2. References: Sharp T. E. and Dowell J. T., J. Chem. Phys., 46 (1967) 1530. |