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Flash photolysis and the recombination of iodine atoms

Citation

Bunker, Don L. (1957) Flash photolysis and the recombination of iodine atoms. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-07082004-142823

Abstract

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The rate of recombination of iodine atoms in the presence of argon has been redetermined by a flash photolysis technique. The measured rate constant agrees with results obtained by the same method in other laboratories. The recombination rate has also been measured at temperatures up to 548[degrees]K; these results are in accord with shock tube data and with other flash photolysis experiments. The rate is found to decrease slowly with increasing temperature, as about [...].

In experiments at temperatures between 300 [degrees]K and 493 [degrees]K n-butane has been employed as "third body." It is found to be 13 times more efficient than argon at room temperature; this margin decreases as the temperature is raised. The third-body efficiencies of hydrogen and deuterium have been compared at 323 [degrees]K; they are equal.

The above experiments collectively lead to a determination of the rate of the recombination reaction involving I2 itself as third body. This reaction is about 600 times more rapid than that occurring with argon at room temperature, but rapidly becomes insignificant if the temperature is increased. From its temperature dependence [...] Kcal may be deduced for the reaction [...].

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Chemistry and Chemical Engineering
Major Option:Chemistry
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Davidson, Norman R.
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1957
Record Number:CaltechETD:etd-07082004-142823
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-07082004-142823
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2831
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:13 Jul 2004
Last Modified:26 Dec 2012 02:54

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