Reaction of D3O+ with D2: Proton affinity of water

Robert J. Cotter, W. S. Koski

Research output: Contribution to journalArticle

Abstract

The cross section for the endothermic ion-molecule reaction: D3O +(D2D2O)D3O+ has been studied over the energy range 2-70 eV using a tandem mass spectrometer. The projectile beam was found to contain a significant fraction of the D 3O+ in an excited electronic state which was relatively insensitive to collisional deactivation using high pressures but was readily deactivated using the paramagnetic gas NO in the primary ion source. Threshold measurements, using the ground state D3O+ beam, permitted a determination of the proton affinity of water and the conclusion that the reaction proceeded through a persistent intermediate complex at energies close to the threshold.

Original languageEnglish (US)
Pages (from-to)784-787
Number of pages4
JournalThe Journal of Chemical Physics
StatePublished - 1973

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Electronic states
Mass spectrometers
Ion sources
Projectiles
Ground state
affinity
Protons
Gases
Ions
Molecules
thresholds
protons
Water
deactivation
ion sources
water
mass spectrometers
projectiles
ground state
energy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Reaction of D3O+ with D2 : Proton affinity of water. / Cotter, Robert J.; Koski, W. S.

In: The Journal of Chemical Physics, 1973, p. 784-787.

Research output: Contribution to journalArticle

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