title: Variable-temperature rate coefficients for the electron transfer reaction N2+ + H2O measured with a coaxial molecular beam radio frequency ring electrode ion trap.
abstract: The neutral molecule temperature dependence of the rate coefficient for the electron transfer reaction from H(2)O to N(2)(+) is determined using a coaxial molecular beam radio frequency ring electrode ion trap (CoMB-RET) method. The temperature of the N(2)(+) ions was maintained at 100 K, while the effusive water beam temperature was varied from 300 to 450 K. The result demonstrates the neutral molecule rotational/translational energy dependence on the rate coefficient of an ion-dipolar molecule reaction. It is found that the rate coefficient in the above temperature range follows the prediction of the simplest ion-dipole capture model. Use of different buffer gas collisional cooling in both the ion source and the RET reveals the effects of both translational and vibrational energy of the N(2)(+) ions.
authors.affiliation: Department of Chemistry and Biochemistry, University of Arizona, 1306 East University Boulevard, Tucson, Arizona 85721, USA.
authors.forename: Bing
authors.initials: B
authors.lastname: Yuan
authors.forename: Zachary
authors.initials: Z
authors.lastname: Scott
authors.forename: George
authors.initials: G
authors.lastname: Tikhonov
authors.forename: Dieter
authors.initials: D
authors.lastname: Gerlich
authors.forename: Mark A
authors.initials: MA
authors.lastname: Smith