Direct current conductivity study of geminate ions produced by photoionization in several alkane liquids. Comparison with Monte Carlo calculations
Journal Article
·
· J. Phys. Chem.; (United States)
The conductivity induced by absorption of 7-8-ns pulses of 248-nm light in several alkane liquids containing anthracene and an electron scavenger has been measured with time resolution of about 2 ns. As was previously observed in the case of cyclohexane, light absorbed by anthracene can also lead to ionization of trans-decalin. This results in a relatively large conductivity signal due to a positive ion of trans-decalin, which has previously been observed to have a high mobility when created by radiolysis. In several alkanes that do not show high-mobility solvent ions, the authors have measured the conductivity signal due to geminate ions relative to the signal due to free ions. These experimental results have been compared with the results of a stochastic model in the case of n-decane and isooctane. Good agreement is obtained with a Gaussian distribution of the separation distances within the geminate ion pairs at the end of the scavenging process. No agreement is obtained with an exponential distribution.
- Research Organization:
- Argonne National Lab., IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6089882
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:18; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
400500 -- Photochemistry
ALKANES
CATIONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CURRENTS
DATA
DIRECT CURRENT
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
IONS
MATHEMATICAL MODELS
MOBILITY
MONTE CARLO METHOD
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHYSICAL PROPERTIES
PULSE TECHNIQUES
THEORETICAL DATA
400400* -- Electrochemistry
400500 -- Photochemistry
ALKANES
CATIONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CURRENTS
DATA
DIRECT CURRENT
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
IONS
MATHEMATICAL MODELS
MOBILITY
MONTE CARLO METHOD
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHYSICAL PROPERTIES
PULSE TECHNIQUES
THEORETICAL DATA