Caltech Library System

About | Browse | Search | Caltech Student Instructions

Type of Document	Dissertation
Author	Engleman, Rolf
URN	etd-02062006-102644
Persistent URL	http://resolver.caltech.edu/CaltechETD:etd-02062006-102644
Title	On the recombination rate of iodine atoms in the presence of various gases
Degree	PhD
Option	Chemistry
Advisory Committee	Advisor Name Title Norman R. Davidson Committee Chair
Keywords	none
Date of Defense	1959-01-01
Availability	unrestricted
Abstract NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. The rate of iodine atom recombination in the presence of various gases has been studied by the flash photolysis technique. The temperature dependence of the rate constant has been determined for recombination in helium, hydrogen, benzene, and methyl iodide. The negative temperature dependences are fitted by the form, [...], where [...] = 0.80, [...] = 1.48, [...] = 2.53, and [...] = 3.24. The iodine atom recombination rate constant was also measured at 50°C. for ethyliodide, hydrogen iodide, carbon monoxide, and nitric oxide. The rate constants relative to helium at 50°C. are: [...]. Nitric oxide appears to be a very efficient third body gas and only a lower limit on the rate constant could be established. Calculations have been made for some possible mechanisms of iodine atom recombination. A classical three body collision model is proposed for atom recombinations. The classical equations of motion were programmed to be solved numerically on a digital computer and some trajectories were examined.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    Engleman_r_1959.pdf 8.24 Mb 00:38:09 00:19:37 00:17:10 00:08:35 00:00:43