Computer modeling of data from pulse radiolysis studies of aqueous solutions containing scavengers of spur intermediates

Journal Article · Thu Oct 11 04:00:00 EDT 1984 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150665a052· OSTI ID:6064068

Trumbore, C N; Youngblade, W; Short, D R

With the calculations reported here, all of the data from a comprehensive study of the kinetics of hydrated-electron decay in the 14-MeV-electron pulse radiolysis of pure water and aqueous solutions have been modeled within experimental error. The overlapping-spur model utilized employs a constant-energy fraction (0.2) of high, constant spur density regions (representing blobs/short tracks) and another constant-energy fraction (0.8) of a low, variable spur density region (representing isolated spurs) whose spur density is proportional to the pulse dose. The model also contains a new hydrated-electron probability density distribution function with the maximum in the probability density displaced from the center of the spur. Adjustments made to fit experimental data from different aqueous-solution pulse radiolysis studies have been minor. Hydrated-electron decay kinetics have been modeled within experimental error for a variety of scavengers of transient reactive intermediates originating in the spur. Thus, this new spur model has been successfully tested against experimental data for 14-MeV electrons over a wide range of pulse doses (0.5-80 Gy), time regimes (10/sup -11/-10/sup -5/ s), and types of scavengers of the major spur transients (e/sub aq//sup -/, .OH, and H/sup +/).

• Research Organization: Univ. of Delaware, Newark
• OSTI ID: 6064068
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 88:21; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
AQUEOUS SOLUTIONS
BEAMS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
DISPERSIONS
ELECTRON BEAMS
ELECTRONS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HYDRATION
HYDROGEN COMPOUNDS
INFORMATION
IRRADIATION
KINETICS
LEPTON BEAMS
LEPTONS
MATHEMATICAL MODELS
MIXTURES
NUMERICAL DATA
OXYGEN COMPOUNDS
PARTICLE BEAMS
PULSED IRRADIATION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIOLYSIS
REACTION KINETICS
SOLUTIONS
SOLVATED ELECTRONS
SOLVATION
WATER