Drift-tube studies of ion-molecule reactions at low collision energies
This thesis presents experimental studies of ion-molecule reactions at low collision energies using two drift tube mass spectrometer apparatus. The reactions studied are (i) proton transfer from HeH{sup +} to ArH{sup +}, (ii) charge and ion transfer reactions of O{sub 2}{sup 2+} with NO, CO{sub 2}, Ne and O{sub 2}{sup +}({sup 4}{pi}{sub u}) with CO{sub 2}, (iii) oxidation reactions of Zr{sup +} and ZrO{sup +} with NO, CO{sub 2} and O{sub 2}, (iv) vibrational quenching reactions of H{sub 3}{sup +} with He, (v) termolecular clustering reactions of H{sub 2}CN{sup +} and H{sub 2}CN{sup +}(HCN) (with He as the third body), (vi) three body association reactions of H{sup +} and D{sup +} with He (with He as the third body) and (vii) termolecular association reaction of NO{sup +} with NO (with Ne as third body). All the reactions were studied at thermal energies (at room temperature), reactions of O{sub 2}{sup 2+} with NO and CO{sub 2}, Zr{sup +} with NO/CO{sub 2}/O{sub 2} were also studied at center-of-mass energies higher than thermal and the association reactions of H{sub 2}CN{sup +}/H{sub 2}CN{sup +}(HCN) with HCN and H{sup +}/D{sup +} with He were studied at low temperatures. In addition, the thesis presents model calculations for the sweep-out effect which is an instrumental effect. A super Langevin rate constant is introduced which is a higher-order correction to the Langevin model. A theoretical model for the three-body ion-atom association rate constant is presented in the appendix of the thesis.
- Research Organization:
- Pittsburgh Univ., PA (USA)
- OSTI ID:
- 7243786
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON DIOXIDE
ION-MOLECULE COLLISIONS
CYANIDES
HELIUM HYDRIDES
HYDROGEN
HYDROGEN IONS 1 PLUS
NITRIC OXIDE
OXYGEN
ZIRCONIUM IONS
ZIRCONIUM OXIDES
CATIONS
CHARGE EXCHANGE
EXPERIMENTAL DATA
IONS
MASS SPECTROMETERS
MATHEMATICAL MODELS
MOLECULAR IONS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
COLLISIONS
DATA
ELEMENTS
HELIUM COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN IONS
INFORMATION
ION COLLISIONS
MEASURING INSTRUMENTS
MOLECULE COLLISIONS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
RARE GAS COMPOUNDS
SPECTROMETERS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena