Kinetics of Energetic Species at Low Temperatures
Abstract
Research on the stabilization and chemical reactions of energetic free radicals is summarized. Studies were made on the irradiation of ice, solid N2F4, solid NH3, EtBr, MeI, MeOH, and tetramethyltetrazene. H atoms, OH radicals, and other normally unstable chemical species produced by ionizing radiation and by electric charges were stabilized at low temperature and investigated. The disappearance of OH in irradiated ice at 100 K followed a 3/ 2-order reaction rate law; the activation energy is 6 kcal/mole. H atoms produced by irradiation of wet pyrex recombined rapidly at 100 K and followed a second order reaction rate law with an activation energy of 4 kcal/mole. Tests designed to trap NH2 radicals at 77 K yielded inconclusive results. Stabilization of H atoms was observed on the surfaces of quartz vessels used for UV studies of MeI, MeOH and tetramethyltetrazine. The rates of formation and disappearance of some of these radicals were measured by electron paramagnetic resonance techniques.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1961
- Accession Number
- AD0268034
Entities
People
- Henry S. Judeikis
- John M. Flournoy
- Max K. Barsh
- Seymour Siegel
Organizations
- Aerojet Rocketdyne Holdings